API Testing is the process of testing Application Programming Interfaces (APIs) to ensure that they are working correctly and achieving the expected results. APIs are integral for any software applications to communicate with each other, as they provide data exchange and flow of information between different applications. A qualified API Testing Expert can ensure that the communication between applications is secure, and that they meet the performance requirements of the end user.

API Testing Experts make sure to think like an “attacker” while performing API operations, while they expand the boundaries of API inputs to test. This involves traditional testing methods such as boundary value analysis, API workflow validations, boundary conditions and security patch testing. In addition their skills involve overseeing the debugging of API logical codes, assisting in 4GL programming related tools, creating automated API tests & scripts as well as load and stress test API process flows.

Here’s some projects that our API Testing Experts has made real:

  • Creating automated tests for backend services
  • Identifying security loop holes in APIs
  • Debugging API logic codes and component layers
  • Developing customized load tests for optimal performance
  • Integrating third party services via APIs

Overall, a qualified API Testing Expert can provide comprehensive and reliable solution for your application software. These experts can fine tune your application software to ensure that it meets all system requirements and user demands efficiently. By hiring an experienced freelancer from Freelancer.com you can secure superior performance of your application software maintained in perfect condition. We invite you to post your own project on Freelancer.com today and get ready to hire an expert API Tester!

From 17,213 reviews, clients rate our API Testing Experts 4.92 out of 5 stars.
Hire API Testing Experts

API Testing is the process of testing Application Programming Interfaces (APIs) to ensure that they are working correctly and achieving the expected results. APIs are integral for any software applications to communicate with each other, as they provide data exchange and flow of information between different applications. A qualified API Testing Expert can ensure that the communication between applications is secure, and that they meet the performance requirements of the end user.

API Testing Experts make sure to think like an “attacker” while performing API operations, while they expand the boundaries of API inputs to test. This involves traditional testing methods such as boundary value analysis, API workflow validations, boundary conditions and security patch testing. In addition their skills involve overseeing the debugging of API logical codes, assisting in 4GL programming related tools, creating automated API tests & scripts as well as load and stress test API process flows.

Here’s some projects that our API Testing Experts has made real:

  • Creating automated tests for backend services
  • Identifying security loop holes in APIs
  • Debugging API logic codes and component layers
  • Developing customized load tests for optimal performance
  • Integrating third party services via APIs

Overall, a qualified API Testing Expert can provide comprehensive and reliable solution for your application software. These experts can fine tune your application software to ensure that it meets all system requirements and user demands efficiently. By hiring an experienced freelancer from Freelancer.com you can secure superior performance of your application software maintained in perfect condition. We invite you to post your own project on Freelancer.com today and get ready to hire an expert API Tester!

From 17,213 reviews, clients rate our API Testing Experts 4.92 out of 5 stars.
Hire API Testing Experts

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    6 jobs found

    Job Description:
 We’re looking for a skilled and detail-oriented QA tester based in China to help us test the API functionality of our payin and payout systems. You will play a key role in validating the reliability and accuracy of our payment processes, ensuring everything runs smoothly from start to finish. Scope of Work: * Conduct end-to-end testing of API-based payin and payout transactions * Monitor and record the full transaction process, including responses and behavior at each stage * Identify and report bugs or unexpected results with clear documentation * Work closely with developers to replicate issues and verify fixes * Offer suggestions to improve testing coverage and process reliability Requirements: * Must be physically located in China (for regional payment flow t...

    $22 Average bid
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    9 bids
    Shopee API Key Acquisition
    6 days left
    Verified

    I need someone to help me obtain API keys to shopee open platform

    $72 Average bid
    $72 Avg Bid
    22 bids

    Freelancer Needed: Production QA Testing for Clippy AI Copilot I am looking for an experienced QA tester to test Clippy AI Copilot, an AI-powered real estate copilot platform. Project Goal Test Clippy properly before production launch and make sure the platform is stable, secure, user-friendly, and ready for real users. What Needs Testing The QA tester must test: * User signup and login * Onboarding flow * Property/listing input forms * AI content generation * Facebook/social media content workflows * Email/WhatsApp/Facebook lead response workflows * Compliance guardrails * CRM/lead capture flow * Supabase database saving * webhook automation * Mobile responsiveness * Error handling * Speed/performance * Security/basic permission issues * Bugs, broken buttons, missing validations R...

    $101 Average bid
    $101 Avg Bid
    58 bids

    I need production-ready configs for both OpenBullet and SilverBullet that will be used primarily for automated testing scenarios. You’ve worked with these frameworks before, so you already understand how to chain requests, handle captchas, parse dynamic tokens and build stable key-check logic without false positives. The project covers: • Building one or more configs tailored to my target endpoint (details shared in chat). • Optimising for speed, reliability and low ban-rate, with proper error handling. • Delivering the finished .opk/.svb files along with a short README that explains required inputs, custom wordlists or proxies and any modules/plugins used. Acceptance will be based on: 1. Successful test runs on my side that reproduce the expected output. ...

    $37 Average bid
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    6 bids

    Commission-Based Sales Experts Needed for AI Poker Bot I’m looking for skilled sales freelancers who can help sell my AI-powered Poker Bot to potential clients and poker communities. This is a commission-only opportunity with strong earning potential for every successful sale you bring in. What You’ll Sell: • Advanced Poker Bot / Poker Agent • Smart gameplay automation • Modern UI and real-time features • Built for online poker players and enthusiasts Who I’m Looking For: • Freelancers with sales experience • Affiliate marketers • Discord/Telegram community managers • People with poker or gaming connections • Anyone confident in lead generation and closing deals What You Get: • Attractive commission per sale • Lo...

    $260 Average bid
    $260 Avg Bid
    3 bids

    We are looking for a highly skilled QA Tester / Automation Testing Engineer to join our team immediately for product testing and quality assurance. Position: QA Tester / Automation Tester Experience: 4+ Years Preferred Job Type: Remote Joining: Immediate Hiring Type: Urgent Basis Required Skills: Manual Testing & Automation Testing End-to-End Product Testing API Testing (Postman / REST APIs) Selenium / Cypress / Playwright Performance & Load Testing Bug Tracking & Reporting Cross-browser & Responsive Testing Regression & Functional Testing Database Testing basics Strong attention to detail Good to Have: CI/CD testing workflows Security & penetration testing basics Mobile app testing experience Agile / Scrum workflow experience Key Responsibilities: Test comple...

    $259 Average bid
    $259 Avg Bid
    40 bids

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