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My new audiobook is ready to submit for reviews by all appropriate media outlets, print and ...background in media relations, publicists’ databases (Cision, Muck Rack, similar), and a demonstrable record of landing review placements for authors or creatives will set you apart. If you already have warm contacts, even better. Timeline: outreach should begin as soon as my press kit is finalised—expected within the next weeks —so we can ride the momentum when the audiobook is release in late spring. Let me know about comparable campaigns you’ve run and the kind of exposure you achieved. I’m ready to move quickly with the right media insider. NOTE: I am an elder dealing with cancer and a very limited budget, under $500. Your success can support more comp...

My current application depends on a custom Java-based WebRTC layer. I now need the same real-time capabilities rebuilt natively in Angular so the front-end team can iterate faster and keep everything in a single tech stack. Scope of work The new Angular module must handle plain audio calls, full HD video calls, and our existing “virtual classroom” flow that lets tutors and students join at scheduled times. Beyond parity with the Java version, I also want integrated screen sharing, an in-session chat panel, and the ability to record each session for later playback. All features have to work smoothly on desktop, mobile, and tablet browsers. Tech notes • Angular 16+ with TypeScript best practices • Direct use of WebRTC APIs—no server-side medi...

Seeking a reliable, detail-oriented Virtual Assistant to support day-to-day operations, with a primary focus on managing the business inbox, scheduling follow-ups, and tracking payments so the owner can stay hands-off with admin. This role starts at 4 hours per week with a 2-week paid trial (8 total hours) and has potential to grow to up to 6 hours per week by Spring or Summer. Training will take place during 8–9 AM EST for the first few days, after which the role is fully flexible and can be completed anytime after 12:00 AM EST, as long as daily tasks are completed on time (most client emails arrive overnight or early morning). Responsibilities include managing and organizing Gmail, drafting client email responses using templates, coordinating scheduling through Calendly and ...

I already have a complete 3D CAD package for a handheld consumer-electronics product exploded assembly, rail cross-section, injection-molded part files, STL/STEP data, and manufacturing drawings. The area that still needs work is the spring mechanism. There are some small changes. Deliverables • part and assembly files • Updated STL and STEP exports • PDF manufacturing drawing

We are a small software development company run by two experienced engineers (14+ years Java/Python/AI and 10+ years Salesforce). We help startups and businesses build backend systems, Salesforce integrations, and AI-powered applications. We are looking for a **Lead Generation / Appointment Setter** who can help us find potential clients in the **USA** who need software development services. **Responsibilities:** * Find US companies/startups that may need software development or Salesforce integration. * Collect decision-maker contact information (CTO, Founder, Product Manager). * Send outreach messages via LinkedIn or email. * Generate qualified leads and schedule meetings with interested clients. * Maintain a simple list of leads and outreach results. **Ideal Candidate:** * Ex...

I have an Android Studio project that needs some spring-cleaning before we add a small new feature. First, the housekeeping: • strip out any dead or unused classes, methods, and resources • refactor what remains so the codebase is readable, well-named, and lint-warning free • resolve a couple of known crashes and UI glitches Once that baseline is solid, I’d like a new dropdown on the main screen. It only has to show a static list that ships with the app—no dynamic filtering or server fetches right now—but please wire it so it can be extended easily later. The app is built with Kotlin (with a few legacy Java files), Gradle 8, minSdk 24. I’ll provide Git access and notes on the bugs I’m seeing. Deliverables • Clean com...

...Sales & Distribution - Work closely with the internal technical team and provide ERP best practices - Deliver scalable, upgrade-friendly, minimal-customization solutions - Support testing, go-live, and post-deployment stabilization What We Are Looking For: - 7+ years of hands-on Apache OFBiz experience - Strong knowledge of Entity Engine, Service Engine, OFBiz Data Model, Widgets, and MiniLang - Java / J2EE background - Solid understanding of ERP processes end to end - Independent, problem-solving mindset with strong ownership - Very strong communication skills — this is a must - Experience in manufacturing or supply chain is a plus Engagement Details: - Location: Remote - Shift: 6:00 PM to 3:00 AM IST - Type: Contract - Rate: Up to INR 1,200 per hour - Availability: ...

I’d like a high-impact design of a crocodile draped or secured with chains, rendered so it feels as though it could spring to life. The final artwork should capture clear edge definition, and convincing depth that would translate well with a tattoo.

Project Goal Develop a robust, stealthy automation bot using Python and specialized browser automation tools to interact w...Stealth Measures: Use residential proxies (e.g., Bright Data) for IP rotation and anonymity. Implement advanced browser fingerprinting techniques to avoid detection. Configurability: The project must include a configuration file for easy modification of API keys, delays, and AI prompts. AI Integration: Utilize the OpenAI API for generating chat responses. Skills Required Python JavaScript PHP HTML Java Scripting Selenium Automation AI Development Codeless Program Automation Ideal Candidate Experience Proven experience with Python (Selenium/Playwright), OpenAI API, and specialized browser automation is essential. Experience with the Dolphin API is a specific re...

...users must be able to send and receive USDT seamlessly, view an accurate transaction history (confirmations, timestamps, hash links), and enjoy the same security and usability they already have in the main Trust Wallet experience—no feature regressions. You’ll be working with the official Trust Wallet Core libraries, USDT ERC-20 contracts, and the mobile SDKs for iOS (Swift) and Android (Kotlin/Java). Clean integration is essential: the new module should slot into the existing wallet architecture so that balances refresh alongside other assets, push-notification logic keeps working, and any future wallet updates will not break the plugin. Deliverables • Source code for iOS and Android modules • Integration guide and build scripts • Basic unit/UI t...

...compliance flags and basic audit logs. • Remote actions (lock, wipe, reboot) executed securely over the air. • Scalable back-end with REST APIs so we can integrate ticketing and reporting later. Tech expectations – Android Enterprise APIs (latest versions) for Work-Managed devices. – Web console built in React, Angular or similar modern framework, backed by a well-documented REST/GraphQL layer (Java, Kotlin, Node, Go—your choice, just explain). – Containerised deployment (Docker/Kubernetes) ready for installation on our on-prem or AWS environment. – Source code, build scripts and a clear installation/runbook are part of the hand-off. Acceptance criteria 1. Smartphones and tablets enrol successfully and receive an initial pol...

Role Overview Build and maintain a fintech plat...multi-level commission engine • Design optimized database schema for high-volume transactions • Implement authentication, OTP login, and security best practices • Deploy applications using cloud infrastructure and CI/CD pipelines Frontend Skills • React.js / or Flutter • HTML, CSS, JavaScript, TypeScript • API integration and responsive UI development Backend Skills • Node.js / NestJS or Java Spring Boot • REST API development and microservices • Payment gateway integration Database & Infrastructure • PostgreSQL / MySQL • Redis caching • Docker, Kubernetes Preferred Experience • payment platform development • Wallet systems and ledger-based account...

I need a fresh, modern identity for our new tournament series and its three seasonal events. The master mark will read “7 United Cup Series”; three spin-offs will swap “Cup Series” for “Fall Cup”, “Futsal Cup”, and “Spring Cup”. All four pieces must share one coherent look. Key points you should know • Shape: a shield is mandatory—think bold lines that immediately suggest prestige and competition. • Hierarchy: the “7” and the word “United” take centre stage, while the subtitle (“Cup Series”, “Fall Cup”, etc.) sits in smaller text beneath. • Colour: match the exact palette you already used for the main 7 United club badge so everything works side-by-...

Hello, I need an Android developer (Kotlin or Java) for one specific task only: When the camera detects a specific image, a video must immediately play aligned with that image (AR overlay on the tracked image). Speed is critical. Image detection and video playback must be very fast and smooth — not slow like many default implementations. Please check the demonstration video I provided. I need the same speed of detection and video playback shown in that video. I will also provide an Android app example that already achieves the required performance. You may need to create an account on their website to test how the image + video pairing works. Important Requirements: Use ARCore image tracking The video must start immediately when the image is detected The video must stay ...

Requirements -Proven experience in software development with expertise in one of these stacks; Ruby on Rails, JavaScript, Python, C++, C#, Java, React, Angular, Vue and .NET frameworks. -Strong understanding of RESTful API design, web development practices, and front-end development using React or similar frameworks. -Hands-on experience managing cloud infrastructure on AWS and Azure platforms. -Familiarity with IT infrastructure components including RBAC (Role-Based Access Control), Linux server environments, and application deployment strategies. -Proficiency with version control tools such as GitHub, SVN, and Git. -Knowledge of database systems including MySQL and SQL Server along with SQL query optimization skills. -Experience working within Agile methodologies to deliver high-q...

...compliance flags and basic audit logs. • Remote actions (lock, wipe, reboot) executed securely over the air. • Scalable back-end with REST APIs so we can integrate ticketing and reporting later. Tech expectations – Android Enterprise APIs (latest versions) for Work-Managed devices. – Web console built in React, Angular or similar modern framework, backed by a well-documented REST/GraphQL layer (Java, Kotlin, Node, Go—your choice, just explain). – Containerised deployment (Docker/Kubernetes) ready for installation on our on-prem or AWS environment. – Source code, build scripts and a clear installation/runbook are part of the hand-off. Acceptance criteria 1. Smartphones and tablets enrol successfully and receive an initial pol...

...on the full trade idea. 2. See their personal commissions update after a dummy sale processes. 3. Download a sales report from the dashboard. Tech flexibility Backend language and database are your choice, so long as the solution is secure, scalable, and documented. If a lightweight web portal is needed for admin tasks, include it in the quote; the member side must remain Android-native (Java or Kotlin). Hand-off Provide full source code, documentation for deployment, and a short Loom or similar walkthrough showing the key admin and user flows so my team can pick up maintenance easily....

...validation, or resolving small logic bugs. > Address issues that may have caused store rejections. > General debugging and testing of apps on real devices (simulators/emulators for initial work). - Required Skills & Experience: To be considered for this project, you should meet the following requirements: > Proven experience developing mobile apps for iOS (Swift/Objective-C), Android (Kotlin/Java), or using cross-platform frameworks such as Flutter or React Native. > Strong ability to work with and troubleshoot existing codebases > Familiarity with key debugging tools like Xcode, Android Studio, Chrome DevTools, Firebase Crashlytics, and others. > Strong communication skills, with the ability to clearly explain what was fixed and how you resolved the...

I need a reliable Windows-based installation of CATIA V5 (specifically V5-6R2022), CATIA V6/3DEXPERIENCE, and the latest release of Siemens NX. The job covers a completely clean setup, verification of every prerequisite (Java, MSXML, Visual C++ redistributables, licensing utilities, etc.), and a quick post-install check to confirm each suite launches, loads sample parts, and saves without errors. Here is how I picture the flow: • Remote session or step-by-step written procedure—whichever you prefer—to perform the installs on my Windows workstation. • Careful configuration so that the three systems coexist happily, share environment variables where required, and run at optimal performance. • Final confirmation that common functions (opening assemblies...

I’m updating my brand’s spring-themed logo and want it to feel fresh while still looking familiar to long-time customers. Old logo: "molla " New style: "" The original layout "molla " must stay: same spring shape. The shame spring shape must be updated with the new 2D minimal design and colors of "". You’ll receive vector files"". Deliverables: vector file AI or EPS.

I need a skilled Android developer to turn my product catalog into a polished native shopping experience. The app will be released only on the Google Play Store, so I’d like it built with the latest Android SDK, Kotlin (or Java if you can justify the choice), and standard Material Design patterns to keep navigation familiar and intuitive. Core flow Visitors should be able to browse categories, open a product page with images and specs, add items to a cart, and move through a secure checkout that supports at least one mainstream payment gateway. A fast in-app product search is essential, and I’m keen on clean architecture so the codebase remains maintainable as the catalog grows. Data & back-end You’re free to recommend the most suitable stack for syncing ...

...profile management Dashboard for users API integration Push notifications Admin panel for managing users and content Database integration Clean and modern UI/UX design Smooth performance and fast loading Security best practices Technology Preference Developers can propose the best stack, but preferred technologies include: Flutter or React Native (cross-platform) Native Android (Kotlin/Java) and iOS (Swift) Backend: Node.js / Laravel / Firebase Database: MySQL / MongoDB / Firebase Developer Requirements We are looking for developers who: Have proven experience in mobile app development Can share previous app portfolio or live apps Follow clean coding practices Communicate regularly during the project Deliver work within the agreed timeline Deliverables The ...

...compliance flags and basic audit logs. • Remote actions (lock, wipe, reboot) executed securely over the air. • Scalable back-end with REST APIs so we can integrate ticketing and reporting later. Tech expectations – Android Enterprise APIs (latest versions) for Work-Managed devices. – Web console built in React, Angular or similar modern framework, backed by a well-documented REST/GraphQL layer (Java, Kotlin, Node, Go—your choice, just explain). – Containerised deployment (Docker/Kubernetes) ready for installation on our on-prem or AWS environment. – Source code, build scripts and a clear installation/runbook are part of the hand-off. Acceptance criteria 1. Smartphones and tablets enrol successfully and receive an initial pol...

...projects Organize documents and communications with accountants, lawyers, and vendors Build and maintain spreadsheets for costs, projects, and contacts Assist with ERP setup and support the farm manager once hired Requirements: Fluent in Indonesian and English Strong Excel skills Good communication and phone skills Organized, proactive, and able to work independently Willing to travel across West Java to scope out locations for the egg farm Nice to Have: Knowledge of agriculture or business operations Admin or operations experience...

...The backend architecture must be developed using both Python and Java, leveraging the strengths of each technology to create a robust, scalable, and high-performance platform. The system should support secure content delivery, user management, payment processing, and efficient content administration. The ideal candidate has strong experience with distributed systems, video streaming technologies, cloud infrastructure, and secure web platforms, and can build a production-grade system capable of handling growing traffic and protecting digital content. Key Responsibilities Design and implement a scalable system architecture for an online tutorial marketplace and streaming platform. Develop backend services using Python and Java to handle core platform functionality. Buil...

...platform efficiently. Admin capabilities include: • View and manage all loan applications • Verify documents and user information • Approve or reject loan requests • Monitor repayments and overdue loans • Manage user accounts • View analytics and loan statistics • Manage loan products and interest rates Technology Stack Mobile App: Flutter / React Native (Android & iOS) Backend: Node.js / Python / Java Database: PostgreSQL / MongoDB Admin Panel: React / Angular Web Dashboard API Integrations: CIBIL / Credit Score APIs Aadhaar / KYC verification Payment Gateway (Razorpay / Stripe / Paytm) Security & Compliance To ensure trust and regulatory compliance, the platform will include: • End-to-end data encryption • Secure API integrat...

...high levels of data security, encryption, and compliance with financial regulations. * Optimize database performance and manage large-scale financial data. * Collaborate with frontend developers and product teams to deliver seamless user experiences. * Monitor system performance and troubleshoot backend issues. **Required Skills:** * Strong experience with backend technologies such as **Node.js, Java, or Python**. * Experience with databases like **MongoDB, PostgreSQL, or MySQL**. * Knowledge of **API development, microservices architecture, and cloud platforms**. * Understanding of **authentication systems (JWT, OAuth)**. * Familiarity with **financial systems, payment integrations, or fintech platforms** is a plus. **Goal:** To build a secure, scalable, and efficient backend...

I need a straightforward Android application that lets registered grocery users browse a product pricelist and...a small dataset or back-end of your choice. • A filter control lets them pick the local brand they’re interested in, instantly updating the list in place. • An optional image upload screen is required so that I, as the admin, can attach a product photo or company logo for future use, even though images themselves are not displayed in the list view. Please build the app natively in Kotlin or Java, keeping the codebase modular so I can extend it later for additional categories or brand tiers. Provide the full Android Studio project along with a compiled APK, and be sure to include clear instructions on how to point the app at my own database or dummy JS...

...the tranquility of a northern winter. Global Perspective: Experienced in writing for international audiences, ensuring cultural sensitivity and geographic accuracy. Sample Portfolio Piece: "The Seasonal Soul of [Country Name]" If you need a quick sample to show a client, you can adapt this structure. Let’s use Japan and India as contrasting examples: Example A: Japan (The Cherry Blossom Spring) "In Japan, spring is not just a change in temperature; it is a pink-hued revolution. As the Sakura blooms from Kyushu to Hokkaido, the country breathes in unison. From the quiet stone paths of Kyoto to the neon-lit streets of Tokyo, the scent of cherry blossoms signals a time of renewal, inviting locals and travelers alike to pause under the falling petals and a...

I need a custom BIRT reports built directly inside our IBM TRIRIGA environment. One Accounting Output report must pull and present the full lease-accounting picture: net rent payment, variable lease payment, interest expense, interest reduction, principal reduction, change in liability, current liability value, amor...standard TRIRIGA report launcher, respect existing security groups and be delivered as .rptdesign files plus any SQL or data model extensions you create. Once installed I’ll verify that calculations tie back to our source tables and that the layout exports cleanly to Excel and PDF without manual tweaks. If you have solid experience with IBM TRIRIGA data model, Eclipse BIRT, and SQL tuning inside DB2/SQL Server, I’d like to work with you. Attach is a simil...

...cases (date shifts, vehicle-type change, no-show flags). • Idempotency so duplicate messages never create duplicate jobs. • Clear documentation of each endpoint, authentication method and field mapping so my in-house team can maintain it later. • A staging environment for partner certification, then a smooth cut-over to production. I am comfortable if you code in Node.js, Python (FastAPI), or Java—whatever you are fastest in—as long as the final Docker image can run on our AWS Fargate cluster. Please outline your suggested tech stack, previous similar integrations, and a rough timeline to get the first partner live; the rest can follow the same pattern. If you have already connected to any of these specific partners, mention it—it will put...

...and/or ) Backend and API development (Python, JavaScript/Node, Java, or C++) Database integration and performance optimization Deployments and basic cloud infrastructure (AWS or similar) Responsibilities: Build and maintain responsive web applications Develop and integrate RESTful APIs Write clean, maintainable, and well-documented code Collaborate via chat and occasional calls Provide regular progress updates and maintain clear communication Requirements: Strong experience in web development (frontend + backend) Solid understanding of HTML, CSS, and JavaScript Experience with React or (or similar modern framework) Experience with at least one backend language (Python, JavaScript/Node, Java, or C++) Familiarity with version control (Git) and teamwork workfl...

I need an Excel-based workbook that lets me type a scaffold tag in once and have everything else spring to life automatically. As soon as I enter or edit a tag, the file must: • Pull the associated material list and roll the counts into overall yard balances. • Issue a unique, sequential tag number if one is not already assigned. • Start a 28-day billing clock, post the recurring charges on schedule, and stop that clock the moment I mark the tag as dismantled. • Produce the final invoice for that tag, zero it out of active inventory, and leave a clean audit trail. All yard totals, billing summaries, and aging reports should stay current without manual refreshes. I also want a simple dashboard that shows what is on rent, what is due for billing this cycle, and w...

...can help test). 2. Core features—Bluetooth pairing with the e-motorike, live data readouts, and settings—function exactly as they did in the original version. 3. No crashes or dangerous-permission warnings on first run. I can supply the APK immediately and will answer questions about expected behaviour. Looking forward to working with someone experienced in APK reverse-engineering, Smali/Java/Kotlin, and modern Android build pipelines....

I’m building a new social-networking experience and need someone who can own both the native Android code and the complete mobile UI/UX. The app will run only on Android and must be developed natively, so Kotlin or Java inside Android Studio is expected. Here’s what I’m looking for: • Translate my rough sketches and feature list into a full UI/UX flow—from user journeys and wireframes to high-fidelity, Material-You-ready prototypes. Figma, Sketch or Adobe XD is fine as long as the hand-off is clean. • Code the core social features natively: onboarding, live feed, profile, in-app chat, push-notification settings and a lightweight post editor. Modern architecture (MVVM with Jetpack components, or your preferred clean pattern) and performance optim...

I already have an active AWS account and a fully-built Spring Boot application that runs fine in my local environment. What I now need is for you to install this dynamic website on an AWS server so it is publicly accessible and production-ready. The code is packaged and ready to go; your job is to choose the most appropriate AWS services (EC2, Elastic Beanstalk, or a container solution—whatever you feel best suits Spring Boot), provision the instance, configure security groups, set the environment variables, and make sure the application starts automatically on reboot. If a lightweight RDS instance or any other managed service is required, please configure that as well. Deliverables • Live Spring Boot site running on my AWS account • HTTPS enabled w...

I’m building a social-networking experience exclusively for Android and need an end-to-end developer (or team) who can take the idea from wireframes all the way to a polished release on Google Play. Here is what I expect: • Design and implement a clean, modern UI that feels native to current Android versions (Kotlin or Java is fine, Jetpack Compose welcome). • Set up the complete back-end, authentication, real-time data exchange, push notifications and analytics using tools you are most comfortable with (Firebase, AWS Amplify, custom REST—open to recommendations). • Deliver a thoroughly tested APK / AAB plus full source code and clear build instructions so I can compile future versions myself. Acceptance criteria: 1. App installs and ru...

I’m building a social-networking experience exclusively for Android and need an end-to-end developer (or team) who can take the idea from wireframes all the way to a polished release on Google Play. Here is what I expect: • Design and implement a clean, modern UI that feels native to current Android versions (Kotlin or Java is fine, Jetpack Compose welcome). • Set up the complete back-end, authentication, real-time data exchange, push notifications and analytics using tools you are most comfortable with (Firebase, AWS Amplify, custom REST—open to recommendations). • Deliver a thoroughly tested APK / AAB plus full source code and clear build instructions so I can compile future versions myself. Acceptance criteria: 1. App installs and ru...

...conversion rate and performance for paid traffic. The goal is to increase phone calls and leads from Google Ads traffic. We are looking for someone experienced in local service landing pages, CRO, and Google Ads tracking setup. What we need: - Landing Page CRO Improve page structure for higher call conversion - Landing Page Cloning Duplicate the main landing page for different services (repair, spring repair, opener repair, etc.) different locations (San Antonio, Austin etc...) - Tracking Setup (VERY IMPORTANT) Proper Google Ads conversion tracking Phone call tracking Google forwarding numbers setup Google Tag Manager setup (if needed) Ensure all calls and leads are tracked correctly in Google Ads Must have experience with local service businesses (home services preferre...

My React/Java-based web application is currently deployed on Replit, database and all. I now need the entire workload moved—server code to Google Cloud Platform and data to Supabase—while keeping everything running exactly as it does today. The move is time-sensitive, so I’d like the migration completed as soon as possible. I will not give you access to the Replit project, the domain, and any existing environment variables. Expectation is to connect on remote and guide me execute it: • Create or configure the GCP project, set up the appropriate hosting service (Cloud Run, App Engine, or another option you recommend), and point the domain with HTTPS enabled. • Spin up a Supabase instance, migrate the existing data, adjust connection strings, and con...

I am building a national-scale digital platform that familiarises foreign workers with Saudi social and legal values, then certifies them through a se...deployed to a staging environment with the modules above functioning end-to-end – Admin panel proving course creation & management features – Recorded, fully proctored test session retrievable on demand – Automatic PDF certificate issued upon passing the final exam – Complete source code, architecture diagram, and deployment scripts handed over Tech stack is flexible—Laravel, Django, Java/Spring, or a Node/React mix are all acceptable as long as Arabic localisation is seamless. When you respond, outline your proposed architecture, timeline, and any prior experience with large-scale e...

...day-to-day. The immediate focus is front-end development, so you’ll be steering our React and layers—building reusable components, wiring pages to the router, and tightening up state management. While the UI comes first, we will also expose fresh endpoints as we go; you’ll help shape the Node.js / API that feeds those screens. We already have a rough domain model running in Java micro-services, so expect to consume and occasionally extend those services rather than start from scratch. Clean, well-tested code, Git-based collaboration and clear commit messages are essential because we’ll be working side-by-side and merging often. Deliverables (acceptance criteria) • Pixel-perfect React/ pages that match Figma references and render responsively. ...

...core objective is straightforward: design and code an engaging, modern-looking Android application that lets users create profiles, follow one another, post updates (text, photos, or short videos), and interact through likes and comments. I have wireframe sketches that outline screen flow, but I’m counting on you for UI refinement, smooth navigation, and selecting the right tech stack—Kotlin or Java on Android Studio is fine as long as the final build is stable and future-proof. Robust back-end thinking is important too; whether you prefer Firebase, AWS Amplify, or another scalable service, please outline how you’ll handle user authentication, real-time feed updates, and media storage. To keep us focused, here’s what I expect at each milestone: • In...

I’m ready to move from concept to code on a Java web application and I need a developer who feels at home in JavaServer Faces. The entire project will live in the Java EE ecosystem, so comfort with standard servlet containers, JDBC or JPA for data access, and front-end component libraries such as PrimeFaces or OmniFaces will be important. Here’s what I’m looking for you to handle: • Set up the JSF project structure (Maven or Gradle) • Build the core pages and managed beans that showcase best-practice navigation, validation, and session handling • Wire in persistence so the app reads/writes to a relational database (MySQL or PostgreSQL—your recommendation is welcome) • Implement basic security: login, role-based access, and ...

I have an MVP running on Java 17, Spring Boot, REST, and MySQL, and now I need it turned into a production-grade multi-vendor marketplace. The platform must expose dedicated Admin, Seller, and User dashboards, scale confidently on AWS, and remain clean and testable. Scope • Upgrade the existing product, cart, order, and payment modules so multiple sellers can manage their own catalogues independently. • Add advanced search functionality—keywords, categories, price ranges, and vendor filters—backed by Elasticsearch (or a comparable search engine) and integrated with Spring Data. • Introduce user reviews and ratings with a moderation workflow surfaced in the Admin panel. • Deliver real-time notifications for order status updates, ...

...management, Java, database administration, and cloud services. Project Deliverables Server Deployment: Hybrid database approach Distributed Cluster We must separate: Edge Layer (Ingress + WebSocket) Application Layer (Spring Boot Core) Stateful Data Layer (Cassandra, PostgreSQL, Redis) Media + Search + Observability WebRTC Stack • Infrastructure: Are you planning to deploy on a our server • Version: need the latest official Signal Server (Java-based) • Customization : rebrand the app or simply run a private instance Configuration & Customization: Set up config .yml for production Optional branding or private instance configuration ________________________________________ Core System Requirements The official Server code is Java applica...

...backend APIs • Integrate white-label GPS tracking system • Implement real-time bus location ingestion • Develop digital ticketing and fare management system • Integrate payment gateway • Implement data analytics and reporting • Design scalable database architecture • Support high telemetry data ingestion (~2.5M GPS records/day) Technology Stack Preferred experience with: • Node.js (NestJS) or Java Spring Boot • PostgreSQL • Redis • Kafka or MQTT • REST APIs • WebSockets • Cloud deployment (AWS / Azure / DigitalOcean) Nice to Have • Experience with transport systems • Experience with IoT or GPS telemetry • Payment gateway integration • High-scale backend systems Project Duration 3&...

...business-management tasks. The program should run natively on Windows (macOS compatibility would be a welcome bonus) and handle core functions such as client records, invoicing, inventory tracking, simple analytics and user-level access control—all within an intuitive, modern interface. My priority is stability and long-term maintainability, so I’d like the codebase written in a widely supported language (C#, Java or Python with a robust GUI framework are all acceptable). A lightweight local database is fine for now, but the architecture should leave room for us to migrate to a cloud-hosted SQL solution later. Please include: • An installer or portable build that works out of the box • Source code with clear inline comments and a short setup/read-me fil...

...number, fiscal status, etc.) Example API Endpoints: POST /receipt/open POST /receipt/item POST /receipt/payment POST /receipt/close POST /report/x POST /report/z GET /device/status Technical Requirements: Secure REST API with HTTPS Authentication (API Key or token-based) JSON request and response format Proper error handling Logging of fiscal operations Preferred Technology Stack (flexible): Java (Spring Boot) preferred or Node.js / .NET Deliverables: Full source code API documentation (Swagger / OpenAPI preferred) Installation and configuration guide Example API requests for testing Final Goal: Enable full control of the Tremol S25 fiscal printer from external applications via a standardized REST API. Optional (Nice to Have): Endpoint for test receipt printing Endpoint fo...

I’m looking for a developer...UPI, so the flow must be fully compliant with India’s recurring-payment guidelines. You’ll need to implement a clean onboarding screen that leads directly into the UPI checkout, enforce automatic access control based on the active plan, and surface a simple “Manage Subscription” area where users can upgrade, downgrade, or cancel at any time. Kotlin in Android Studio is preferred, but I’m open to Java if that speeds delivery and keeps the codebase maintainable. Please package the final APK, all source files, and a brief README that explains build steps, UPI configuration, and where to adjust plan pricing in the code. Once I can install the APK, activate a weekly plan with my own UPI ID, and see the pay-wall lift aut...