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Linux is an open-source and free operating system, which runs on many computers, servers and device. A Linux Developer is any tech professional who specializes in developing programs and applications that run on the Linux operating system. They also help install, troubleshoot and fix any issues related to the Linux OS, allowing their clients to use it effectively.
Linux Developers are highly knowledgeable in this field and can provide their clients with various services ranging from installation, selection and acquisition of Linux-based applications, to helping set up a computer or server infrastructure. Their expertise would be beneficial for any business that wants to employ the use of both Linux-based applications and environments.
Here's some projects that our expert Linux Developers made real:
Our expert linux developers can achieve all this, as well as any other custom tasks that may be required. At Freelancer.com you’ll find highly skilled professionals ready make your idea reality. If you have a project you need help with or just want an experienced developer to lend a helping hand with technology needs, post your project today!
From 203,737 reviews, clients rate our Linux Developers 4.9 out of 5 stars.Linux is an open-source and free operating system, which runs on many computers, servers and device. A Linux Developer is any tech professional who specializes in developing programs and applications that run on the Linux operating system. They also help install, troubleshoot and fix any issues related to the Linux OS, allowing their clients to use it effectively.
Linux Developers are highly knowledgeable in this field and can provide their clients with various services ranging from installation, selection and acquisition of Linux-based applications, to helping set up a computer or server infrastructure. Their expertise would be beneficial for any business that wants to employ the use of both Linux-based applications and environments.
Here's some projects that our expert Linux Developers made real:
Our expert linux developers can achieve all this, as well as any other custom tasks that may be required. At Freelancer.com you’ll find highly skilled professionals ready make your idea reality. If you have a project you need help with or just want an experienced developer to lend a helping hand with technology needs, post your project today!
From 203,737 reviews, clients rate our Linux Developers 4.9 out of 5 stars.I'm looking for an experienced Minecraft server setup specialist to create a robust server for more than 50 players. The server should include the following custom modes: oneblock, realm, and lifesteal. Key Requirements: - Setup of oneblock, realm, and lifesteal modes - Configuration for over 50 concurrent players - Ensure server stability and performance - Provide guidance on server management Ideal Skills and Experience: - Expertise in Minecraft server setup and configuration - Experience with custom game modes - Knowledge of server optimization for high player counts - Strong problem-solving skills and reliability Please share your relevant experience and approach to this project.
I am running Nextcloud on a Linux server and I’m trying to mount a TrueNAS SMB share as external storage using the standard “Username and Password” method. Each time I add the share, Nextcloud throws the message: “action needs authentication failed – wrong password.” The credentials are definitely correct and the share is reachable from other machines, so the problem lies somewhere in the way Nextcloud is handing off the authentication to the SMB service. I need someone who can: • Pinpoint the exact cause of the error in Nextcloud’s external storage configuration (logs already collected). • Apply the necessary fixes or adjustments—whether they involve Samba/SMB parameters, PHP modules, Nextcloud tweaks, or TrueNAS share setti...
My EKS-based application is running in a Development cluster and currently throws 403 errors whenever the pods attempt to reach our S3 bucket. The root cause is clear: the Kubernetes service account has never been configured for IAM Roles for Service Accounts (IRSA). I need someone to walk through the entire IRSA setup, make the changes, and prove that the pods can finally read and write to S3 without hard-coded credentials. Scope of work • Discover the AWS account ID with AWS CLI. • Draft and apply the trust relationship JSON that lets the service account assume a new IAM role. • Create that IAM role, then craft a least-privilege S3 access policy and attach it. • Annotate the existing Kubernetes service account so it references the role. • Validate the ...
Migrating frontend from Vercel to Cloudflare Pages and to refresh the interface. • Clone our existing repo, set it up a Cloudflare Pages build, and make sure all routes, environment variables, and Supabase calls still work once deployed. • Tidy up the navigation flow so key pages are easier to reach, and tune any slow components for faster first paint and interaction. I will provide: – The current Vercel-hosted project, a reference template, all images/video, and the brand style guide. – Direct access to the GitHub repo and Cloudflare account for creating the production branch. Deliverable means: the site builds and deploys on Cloudflare Pages with no regressions, Lighthouse and Web Vitals show an improvement over the current live version, and the refreshed v...
I need a tailored set of Cloudflare WAF rules that operates as a Custom Bot Policy. The objective is straightforward: detect suspicious, automated traffic and have Cloudflare respond with a CAPTCHA challenge instead of an outright block. You’ll start by assessing my current Cloudflare configuration, then craft one or more custom WAF expressions that reliably flag bots through indicators such as abnormal request rates, header irregularities, IP reputation scores, or other signals you’ve had success with. Once matched, the rule action must be “Challenge (CAPTCHA).” Deliverables • Finalised WAF rule set added to my Cloudflare dashboard • Proof-of-concept tests showing legitimate users unaffected and bots challenged • A brief hand-over note ex...
My ESP32 code already handles Wi-Fi, builds the S3-compatible requests, and reaches Cloudflare R2, yet the text files I push never actually appear in the bucket. Authentication is fine, sockets stay open, but the data simply isn’t syncing. I need a fresh set of eyes to jump on a live remote session (AnyDesk or similar) and trace the problem with me in real time. Your task is to pinpoint the break in the upload flow, adjust the code or headers as needed, and prove the fix by successfully writing and reading back a sample .txt file from R2. Key points • Hardware: ESP32 (Arduino framework; can switch to ESP-IDF if you prefer) • Storage target: Cloudflare R2, S3-compatible API • Data type in scope: plain text files only—no sensor streams or images right now ...
I’m spinning up a fresh Ubuntu VPS and need it turned into a rock-solid hub for my IoT fleet. The box must host two main services—Mosquitto for messaging and a Mender server for over-the-air firmware updates—without compromising security, performance, or future maintainability. Here’s the picture • Mosquitto will run behind TLS with mutual authentication. I’ll give you the root CA; you generate and stage broker and client certs so the standard mosquitto_pub / mosquitto_sub TLS test passes. • Mender must be installed in its open-source edition, set to distribute only signed artifacts. I already sign firmware; the server simply has to enforce signature checking before rollout. • fail2ban on the host should block any source IP after three ba...
I’m a Python developer who delivers end-to-end IT and Software Services for small to medium-sized businesses. My core offerings include custom software development, scalable cloud services, GenAI integrations, web applications and bespoke automation tools. I’m looking for a business-development professional who can consistently bring in new clients on a pure commission basis. You already have—or can quickly build—a network of decision-makers in the SMB space and know how to translate their pain points into signed projects. How the partnership will work • You source and qualify prospects that fit our service profile. • I join during technical discussions, craft proposals and deliver the work. • Commission is paid on every closed deal; percent...
I'm building a custom AI-powered operating system. This is Phase 1 — the foundation build. I need an experienced Linux sysadmin to create a polished, macOS-style Ubuntu 24.04 LTS environment on my hardware — functioning as my primary file server, tightly integrated with my MacBook Air M3. Everything must be modular, clean, and extensible — I will layer my own AI system on top later (including a Hailo-8 accelerator). Apple-level polish, not default Ubuntu. All work product and IP become my sole property upon payment. HARDWARE: • Server: HP Mini Pro G4 (64GB RAM, 256GB SSD) • Storage: Yottamaster 5-Bay DAS, 4TB drives (~20TB raw) • Client: MacBook Air M3 (8GB) • Telstra 4G modem (to be rooted) • [Future] Hailo-8 AI accelerator SCOPE: 1. m...
I’m looking for someone who can provide and configure a high-performance SMTP service that comes with an integrated webmail interface. My main use case is sending bulk email, so deliverability, speed, and solid IP reputation matter more than anything else. Here’s how I picture the engagement: 1. Deliverables • An SMTP server fully configured on my domain, ready to send high-volume campaigns. • A webmail front end so I can manage mailboxes, lists, and content without touching the command line. • Proper authentication (SPF, DKIM, DMARC or whatever you recommend) already set up so messages land in the inbox. • Clear, step-by-step handover documentation that lets me add new domains, warm up IPs, and monitor bounce/complaint rates. 2. Tech ...
We have a very well working ingestion based cloud application, based on a RUST - Python stack with various databases. This is connected via a authentication system to a frontend which is also a combination of SVELTE - and a various of stack on top of that. We are looking for someone to help us productionlize this system and continously work with us to add new features and improve it. We can spit out logic quickly but need it properly engineered when going to production. Please note that the system is already working in a PoC manner and documented.
My provider has suspended my Ubuntu VPS after flagging a hack on the web-server layer (Apache/Nginx, exact stack is in the incident report I will share once we start). At the moment I have zero hardening in place—no firewall rules, no SSL, nothing—so the attacker clearly found an easy way in. I do have a recent full backup, so you can work safely and roll back if needed. Your mission is to identify the entry point, remove any malicious code or files, close the vulnerability, and leave the server in a state that convinces the host to lift the ban. You are welcome to use tools such as fail2ban, UFW/iptables, ClamAV, rkhunter, ModSecurity, or any other utilities you normally rely on. Deliverables • Clean, uncompromised web root and services reinstated • Detailed ...
Job Title: Senior Python Software Developer – Cloud-Native Location: India (100% Remote) Working Hours: India Daytime Hours Experience Required: 7–10 Years Engagement Type: Full-Time / Long-Term Contract Project Overview We are hiring a Senior Python Software Developer with strong cloud-native expertise to join a global engineering team. This role is ideal for a highly experienced, hands-on developer who is comfortable working in Linux environments and building enterprise-grade backend systems. You will work on scalable, cloud-native solutions with a strong focus on automation, scripting, and database-driven applications. Role Summary Senior Python Software Developer – Cloud-Native Engineering You will design, develop, and optimize backend services and automation s...
A Generative AI Expert designs, develops, and deploys AI systems that can generate content such as text, images, code, audio, and video using advanced models like LLMs (Large Language Models) and diffusion models. They work with technologies such as OpenAI APIs, Google AI, Microsoft Azure AI, and open-source frameworks like Hugging Face. Key Responsibilities Develop AI-powered applications using LLMs (GPT, Claude, Gemini etc.) Fine-tune models using domain-specific data Build prompt engineering strategies Implement RAG (Retrieval-Augmented Generation) Deploy AI models using cloud platforms (AWS, Azure, GCP) Optimize AI performance, latency, and cost Ensure AI ethics, bias mitigation, and data privacy compliance Integrate AI with web/mobile applications via APIs Required Skills Technica...
I’m running a Debian server and need the system language switched from its current setting to Ko-kr. Your task is to: • Reconfigure the server’s locale so all system messages, man pages, and default environment variables use Ko-kr. • Verify the change persists after a reboot and is applied for both root and regular SSH sessions. • Provide a brief set of commands or a script so I can repeat the process on future servers if needed. Please work directly on Debian, avoid disrupting running services, and share a short confirmation (e.g., output of locale and localectl) once the change is complete.
I keep seeing high RAM utilisation on both Oracle Linux and Red Hat Enterprise Linux servers and I want to understand, in depth, what is really happening inside the memory subsystem. More than a quick fix, I need a knowledgeable administrator who can walk me through each layer—kernel, user space, buffers, cache, swap—so I can read the numbers with confidence and spot the true culprits when usage spikes. Here is what I expect from our collaboration: • A live, step-by-step session (or series) where we run commands such as free, top, vmstat, sar and others you recommend, interpret every column, and relate the output to the kernel’s behaviour. • Practical explanations of how Oracle Linux and RHEL may differ in their memory reporting and tuning parameters. &bull...
I need a straightforward software application that runs natively on Linux and serves as a dedicated utility tool. The core idea is already outlined on my side; once we agree to work together, I will share a concise feature list and expected workflows. Here is what matters most to me: • Clean, dependable code that compiles without hassle on common Linux distributions. • A minimal-footprint executable plus the full, well-commented source. • Clear build instructions (Makefile, CMake, or an equivalent shell script). • A short README so I can install, run, and troubleshoot the tool on my own. Any modern language that is well supported on Linux—C, C++, Rust, Go, or Python—is fine, so choose whichever lets you deliver a robust result quickly. If you l...
I need you to make me a secret like input sense you have to reverse app to edit NBA 2k26 I want the name to be Vale Secret Requirements No Titan, Zen, or capture card needed. You only need: A PC 2 Ethernet cables USB-to-Ethernet adapter Note: If you are on a laptop with no ethernet port, you will need two USB-to-Ethernet adapters. the cheat runs through the Ethernet cable to your console it doesn't operate like a traditional script and works directly through network packets, not input emulation. 1) Network manipulation (lag switch idea) These tools sit between your console and the internet (PC + Ethernet) and: • delay packets • drop certain packets • resend them at controlled times Result: • other players appear frozen or delayed • your console keeps enough co...
I’m running a Laravel 10 bulk-media sender that talks to WhatsApp Business Cloud through a webhook. Whenever the API answers with HTTP 429, the webhook does mark the message as failed, yet the queued retry flow (RetryFailedWhatsAppJob on Redis/cloud queue) rarely fires, and when it does, the image-ID matching logic sometimes mis-aligns. The result is missed retries or, worse, duplicate sends. Here’s what needs to happen: • Repair the webhook callback so the media object returned by WhatsApp is always matched to the correct outbound record. • Ensure the job is dispatched, picked up, and processed on the existing Redis-backed queue every time a 429 occurs, honouring the current attempt counter. • Implement a reliable back-off for those 429 responses so we r...
I need an experienced Comfy specialist to take us from a blank server to a fully functioning environment my team can rely on every day. The first priority is a clean installation and initial configuration: database, user roles, security settings, and any recommended performance tweaks. Once it is running smoothly, I’d like you to walk us through the platform’s more advanced, custom-feature workflow so we can tailor it to our internal processes. We have not yet decided whether the platform will need to hook into other tools, so I’ll look to you for advice on what’s possible and the best timing for any integrations. After setup, please deliver an advanced training session (remote is fine) that demonstrates how to extend or adjust those custom features, plus written ...
I’m dealing with unreliable email delivery—some messages never leave the outbox, others vanish on the way in, and a few land straight in spam. I need someone who can quickly trace the root cause and put my account back on solid footing. The domain sits on cPanel and I have full DNS control, so editing SPF, DKIM, or DMARC records is no problem if that proves to be the culprit. Should the fault lie within the mail client, SMTP settings, or server throttling, please adjust those as well and show me exactly what you changed so I can keep the setup healthy in the future. Deliverables • Clear diagnosis explaining the issue and its origin • All configuration fixes applied (DNS, SMTP, or client-side) • Proof of successful send-and-receive tests with no messages f...
We need an engineer experienced with MZ Automation openIEC61850 to build a complete IEC 61850 Edition 2.1–compliant SCL package for our Smart Grid controller (Linux-based OEM device acting as an IEC 61850 Server via LAN). Deliverables SCL files: ICD / CID / SSD / SCD (as applicable) Conformance paperwork: PICS / PIXIT / TICS / MICS Automation (preferred): scripts/tools to generate plant-specific SCL from our plant configuration file for future installations Key Requirements All Logical Nodes / DOs are defined in our internal spec — implement exactly what’s listed (no guessing) Logical Node naming must comply with CEI 0-16 (Annex T) Data transmission: some values every 4s, some on change, some on request, plus controls/setpoints from client We want an optimized dataset/r...
I have a GPU instance with RTX 4090 and need to configure a setup for create videos
I need a complete platform that can tell—quickly and with a high degree of accuracy—whether an email address is usable. The core of the build must cover: • Syntax verification • Domain verification • Mail-server (SMTP) verification Those three checks have to run in a single pass so the user gets a clear “valid / invalid / unknown” status without waiting around. You are free to choose the stack, but solutions that lean on reliable libraries or services for DNS look-ups and SMTP handshakes (for example Python with dnspython and smtplib, or a Node.js equivalent) will go to the top of the pile. I expect: – A web interface where I can paste or upload a list and watch the progress in real time. – A clean JSON API that mirrors the sa...
I am developing a Cabal Online Private MMORPG (EP 35 +). The system works through .so library injection into the game server process, and includes: Advanced C++ development Memory hooks and offset manipulation Packet interception and handling (C2S / S2C) Internal game structure interaction Modular plugin system JSON-based configuration Linux-based deployment I am looking for an experienced developer to help expand, stabilize, and improve this system. - Technical Requirements Strong C++ (advanced level); Linux development experience; Memory manipulation (pointers, offsets); Hooking / detours; Reverse engineering knowledge; Networking and protocol understanding; Advanced debugging skills; Nice to have: Experience with MMO private servers; Familiarity with Cabal, MU Online, Ragnarok, o...
I am looking for an experienced Laravel developer with real server-side deployment experience to install and validate already delivered Laravel ZIP packages. The ZIP packages are already prepared and finalized. This is strictly a technical installation and validation task. No development. No UI work. No feature changes. No refactoring. No payment integration. Scope of Work • Install the provided Laravel ZIP packages on the server • Configure the .env file using provided credentials • Ensure correct permissions (storage, bootstrap/cache) • Run Composer install if required • Confirm the application boots correctly • Verify core routes load without 500 errors • Check logs for critical issues • Provide a short technical summary of actions performed ...
I already have a Linux machine running k3s and want to deploy an open source application in the cluster. For this, I need a complete and easy-to-follow configuration, including all necessary preparations for HTTPS with Let’s Encrypt and the appropriate Nginx settings. Scope Install or verify the Nginx Ingress Controller in the k3s cluster (Traefik is not used). Create all required namespaces, deployments, services, and ingress resources so that: – The application in the cluster is reachable via a defined path (e.g. /app). Set up TLS certificates with Let’s Encrypt (including automated renewal) and integrate them into the ingress. Document all commands and YAML files in such a way that I can repeat the installation and configuration step by step on another system at a...
I need a secure, lightweight VPN application built for both and Android. The interface can stay minimal; stability, speed, and protocol flexibility are the real priorities. Core capabilities I expect: • Kill switch that reliably blocks traffic if the tunnel drops • Split tunneling so the user can choose which apps bypass the VPN • Support for the following protocols or transport layers: ssh, ssl, udp, v2ray, and websocket • A menu of multiple server locations that I can expand later through simple JSON or similar remote config No in-app user-authentication flow is required; the build should assume pre-provisioned profiles or embedded credentials. Deliverables: 1. Clean, well-commented source code (/Kotlin or Java/) 2. Signed release builds ready for TestFli...
We are getting multiple OT projects and need more hands to support us in terms of this. I’m consolidating several Industry-grade PCs that run bespoke Python applications into our existing Operational Technology environment. The immediate goal is to create a clean, well-documented integration pathway that lets these machines exchange data safely with the rest of the plant network while respecting every cyber-security control already in place. Here’s what I’ll hand over on day one: current network maps, the Python sources, and a short list of approved protocols (mainly Modbus/RTU). From you I need a streamlined integration plan, the actual Python interface code or refactor, and clear documentation that anyone on the OT team can follow without hunting for tribal knowledge....
I’m bringing my health-focused website up to full HIPAA compliance and need an experienced security professional to handle the technical hardening. The immediate priorities are: • Provision and correctly install an SSL certificate so every page, asset and sub-domain loads exclusively over HTTPS. • Encrypt all stored and transmitted medical-record data, making sure keys are managed securely and database backups follow the same standard. • Review the current codebase, server configuration and third-party plugins against HIPAA’s Security Rule, then patch any gaps you find. • Document the changes and supply a simple compliance checklist I can keep on file for auditors. I’m on a Linux VPS running Nginx with a Laravel backend; you’re free to us...
I want a single, turnkey application that watches my CCTV feeds, spots shop-lifters in real time, recognises grocery products on the shelves, and keeps a live head-count of customers. The core model must be YOLO, and I need the exact same code-base to compile and run on both Windows (desktop with NVIDIA GPU) and a Raspberry Pi 4. Video sources vary—some cameras stream RTSP over IP while a few older analog units reach the NVR through a capture card—so the program has to accept either type without manual re-configuration. For product recognition I care only about groceries; no clothing or electronics labelling is necessary. The model should be trained (or fine-tuned) on the most common supermarket items so false positives stay low even when shelves are crowded. Key expecta...
Description I’m hiring an experienced Open Tibia developer to deploy a modern 13+/14.12 stack using Canary (OTBR) and deliver a complete working foundation: server + client + website accounts, with proper backups and rollback. This is an assets-based 13+/14+ project (not 8.6 / legacy). 1) Server (Ubuntu 22.04 VPS) Install/configure Canary (OTBR 14.12+) MariaDB setup Proper config + ports + firewall systemd services with auto-restart Confirm clean restarts and stability Start with a standard map base (I’ll move to a custom map later) 2) Client (Windows) Compile OTClient Redemption (Windows) Preconfigured connection (no IP editing) Basic branding (name/logo) Package as downloadable ZIP Auto-update setup for client files/modules/assets (versioned) 3) Website (AAC) ...
I have already created the subdomain of my main domain where will live and I can give you full SSH/root access to the Linux server that powers it (Ubuntu 24.04 with HestiaCP panel running on port 8083 of main domain). Subdomain has ssl via Let's encrypt. All I need is a clean, production-ready installation of the latest stable release, configured so it loads flawlessly from the subdomain (HTTPS, reverse proxy, environment variables, database, etc.). I have a VPS hosted by Hostinger. You are free to use the official Docker set-up or a manual Node.js build—whichever you feel is most reliable—but please secure it properly, connect it to a Postgres database (which has to be setup as well), and leave me with concise notes so I can maintain or upgrade it later. Acceptance wi...
I have a fresh Ubuntu 22.04 VPS ready and I want a fully working Open Tibia server running version 13.x or newer. I am happy to go with either Canary or TFS—whichever you feel will get us to a stable, live server fastest. My own attempts stalled mainly at the client-connection stage, so the critical piece for me is having at least one client (official Tibia or OTClient, I am flexible) connect reliably to the server once it is online. What I need from you: • Compile or install the chosen engine on the VPS, configure it, and verify it boots without errors. • Walk me through the minimal config changes so I understand what was done. • Provide a working client package—or clear instructions for obtaining and patching one—that logs straight into the serve...
I’m looking for an online tutor based in India who can guide me through intermediate-level administration of both Linux and Windows Server environments. On the Linux side I want practical, session-based coaching in system administration, security and firewall management, and shell scripting. For Windows Server, the focus should be Active Directory management, server configuration and deployment, plus security and patch management. Each topic needs to be demonstrated live, with time for me to replicate the steps on my own lab machines during or immediately after the call. We can meet on Zoom or Google Meet for 2–3 hours a week, preferably evenings or weekends. Deliverables • A structured lesson plan that maps out the sequence of sessions • Recordings or sess...
I need to link one incoming GSM leg with a SIP participant inside FreeSWITCH so both callers join the same live conference room without noticing any difference in media or signaling. The end result must feel like a single, seamless conversation. Key requirements • FreeSWITCH must act as the bridge and mixer. • The conference room has to support call recording (start automatically and save to disk) and allow me to mute or un-mute either participant from the console or an API. Current environment – A working GSM gateway already delivers calls to FreeSWITCH through SIP. – An existing SIP trunk is in place for the VoIP side. – Root access to the FreeSWITCH server is available. Deliverable 1. Step-by-step configuration (dial-plan snippets, conference profi...
I have a fully-built business website written in that currently lives on a temporary project URL. The site’s sole purpose is to showcase our services, so it needs to load quickly, sit behind HTTPS, and remain SEO-friendly. Your task is to take the existing repository, build it, and make it publicly accessible on my own custom domain. Key deliverables: • Root and “www” versions of the domain pointing to the live build • Valid SSL certificate with automatic renewal • Clean, repeatable deployment flow (Git-based or CI) plus a short note explaining how to trigger future releases If you’re comfortable with Vercel, Netlify, AWS, or a similar platform and can handle DNS changes, environment variables, and any edge-cache configuration, this sho...
Emails sent from my cPanel-hosted domain have suddenly stopped landing in Hotmail / Outlook inboxes. There is no listing on public black-hole services and Microsoft support insists the IP is not formally blocked, yet every message to @hotmail, @outlook and @live addresses is silently dropped. Key context • The mail is generated by the default cPanel mail service (Exim). • No recent changes were made to DNS, SPF, DKIM, rDNS or server configuration. • My only troubleshooting so far has been opening a ticket with Microsoft; the response pointed me to general guidelines without lifting the block. What I need – A thorough diagnosis of why Microsoft is filtering or throttling the IP. – Remediation steps applied (SPF / DKIM / DMARC alignment, rDNS, HELO bann...
I have a Lenovo ThinkPad T480 waiting for a fresh, security-first Debian installation. The goal is a fully hardened, privacy-respecting daily-driver that ships with BOTH Mozilla Firefox and Brave, each pre-tuned for strong tracking-protection and fingerprint-resistance. This is an ADVANCED hardening job. Beyond the base install I’ll need full-disk LUKS2 encryption, secure boot/Libreboot if the hardware permits, locked-down BIOS settings, kernel and sysctl tweaks, AppArmor (or comparable MAC), DNS proxy with encrypted queries, and a firewall configured to best practice levels. I did not select a specific firewall in the form, so feel free to recommend whether UFW, iptables or firewalld is the right fit for an always-on laptop that roams between trusted and untrusted networks. Delive...
We are looking for an experienced DNS and domain reputation specialist to help resolve an ongoing production issue affecting users on certain mobile networks (specifically T-Mobile). The specific error users see is: DNS_PROBE_FINISHED_NXDOMAIN Our platform is hosted on AWS (Route 53 + ALB / CloudFront). DNS is correctly configured and resolves properly on most networks (Google DNS, Quad9, etc.). Our domain reputation has already been reviewed and corrected by major security providers. However, users on T-Mobile are still experiencing DNS-based blocking or resolution issues. This appears to be related to carrier-level DNS filtering or residual reputation/security classification behavior — not core infrastructure misconfiguration. ⸻ Scope of Work • Diagnose carrier-level DNS...
Project Brief – Delivery & Courier Management System Company: Spartan Tracker Industry: Vehicle Tracking & Fleet Management Project Overview Spartan Tracker is expanding its services and intends to develop a complete Delivery & Courier Management System to offer delivery and on-demand services. We are looking for a development team to build a scalable, secure, and modern platform that includes web and mobile applications. The system must support real-time operations, financial management, and seamless interaction between administrators, couriers, and customers. Core System Requirements 1. Admin Dashboard (Web-Based) The admin panel must allow full operational control, including: User management (customers & couriers) Courier approval & document verificati...
I have an email server in my office and want to create DNS record for flawless email delivery. With the present records emails are tagged as Spam and are blocked. Will share the information vie personal email for privacy and security.
I want to launch a fully-featured, cloud-hosted lottery platform built on a hardened Node.js backend with a reliable database layer. New players will sign up with a classic email-and-password flow, then complete KYC before they can fund their wallet or join a draw. The exact KYC data points can be finalised together, but the process must be seamless and compliant. Core flow • A user tops up an internal wallet via PayPal (gaming category enabled), buys entries, and watches their balance update in real time. • On draw day a server-side, provably-fair randomiser selects winners; every draw, ticket purchase, and payout is written to an immutable audit log. • From my side I need an admin dashboard that shows live player stats, transaction history, and lets me trigger or sc...
I need an end-to-end web application written in pure Go, backed by a MySQL database. The core focus is clean, idiomatic code that can be compiled and deployed on a standard Linux server without fuss. You’re free to structure the project with popular Go web frameworks such as Gin, Echo, or Fiber, as long as the final build remains lightweight and easy to maintain. I will supply server access and a blank MySQL instance; you take it from there—designing the schema, wiring up the handlers, and exposing routes that follow REST principles. Code quality, straightforward error handling, and secure interaction with the database are priorities. If you prefer containerisation, feel welcome to include a Dockerfile so the whole stack can spin up locally with a single command. Deliverables...
We need an expert Odoo + DevOps engineer to migrate our existing Odoo 18 environment from to a Quebec-based private cloud. This project involves strict compliance, hardened security, and zero-data-loss migration. What You’ll Do Provision production & staging servers in Quebec Harden Ubuntu (firewall, Fail2ban, SSH, auto security updates) Deploy Odoo 18 Enterprise with Nginx, SSL/TLS, secure headers Configure PostgreSQL (encryption, tuning) Migrate database, filestore, and ~13 modules from Ensure full functionality across Accounting, CRM, HR, Sales, Inventory, Website, Manufacturing, etc. Implement encrypted daily backups (30-day retention) Provide DR and technical documentation Support testing and final production cutover Experience working in environments aligned with: Law...
I am moving our development environment from IBM App Connect Enterprise v12 to v13 and want an experienced ACE engineer to guide and execute the configuration work. The scope is limited to environment setup—no data transfer or application-level code changes—so the focus will be on Migrationg to current ACE version to ACE 13, standing up the integration servers, and making sure every existing BAR file and deployment script still works. Here is what I need done: first, review the current v12 configuration (, policy projects, mqsiprofile, ODBC/JDBC configurable services, security identities). Next, build the equivalent layout in v13, adjusting ports, resource limits and any new parameters the release introduces. Finally, update our build pipeline (mqsicreatebar / mqsibar command...
I am moving our development environment from IBM App Connect Enterprise v12 to v13 and want an experienced ACE engineer to guide and execute the configuration work. The scope is limited to environment setup—no data transfer or application-level code changes—so the focus will be on Migrationg to current ACE version to ACE 13, standing up the integration servers, and making sure every existing BAR file and deployment script still works. Here is what I need done: first, review the current v12 configuration (, policy projects, mqsiprofile, ODBC/JDBC configurable services, security identities). Next, build the equivalent layout in v13, adjusting ports, resource limits and any new parameters the release introduces. Finally, update our build pipeline (mqsicreatebar / mqsibar command...
Project Description: I am looking for a Cybersecurity Specialist to perform a comprehensive security audit on a newly developed desktop application. The goal is to evaluate the robustness of the authentication framework and provide a risk assessment report. Scope of Work: Conduct a Vulnerability Assessment on the application's login and validation protocols. Test the integrity of the software's validation logic against unauthorized access. Evaluate the effectiveness of current obfuscation and anti-tamper measures. Provide a detailed report with recommendations for hardening the software and improving data protection. Requirements: Proven experience in Application Security Testing and OWASP standards. Strong background in binary analysis and software protection mechanisms...
Title: Urgent: Fix Frequent Server Freezes & Resource Exhaustion (WordPress / Cloudways) Project Description: I am looking for an experienced System Administrator / WordPress Expert to diagnose and resolve a recurring issue with my website. Environment: CMS: WordPress Hosting: Dedicated Server on The Problem: The website frequently freezes and becomes unresponsive (multiple times a day). Currently, the only temporary fix is a manual server reboot via the Cloudways panel, after which the site works for a few hours before crashing again. Scope of Work: Audit & Diagnosis: Analyze server logs (Apache/Nginx, MySQL, PHP-FPM) and Cloudways monitoring tools to identify the root cause (e.g., memory leaks, database bottlenecks, plugin conflicts, or high CPU spikes). Troubleshooting:...
Job Description: QA Engineer – Cybersecurity Product (Reverse Proxy Server) Position Title: QA Engineer Location: Mumbai, India (Hybrid/Remote options available) Domain: Cybersecurity – Reverse Proxy Server Development and enterprise data security while using the cloud services Framework: Agile/Scrum Role Overview We are seeking a detail-oriented and security-aware QA Engineer to ensure the quality, reliability, and resilience of a cloud-native reverse proxy server. You will be responsible for designing and executing test plans, automating test cases, and validating security features in a fast-paced Agile environment. Your work will directly contribute to the robustness of a critical cybersecurity product. Key Responsibilities • Design, develop, and execute manual...
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