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!

Von 11,162 Bewertungen, bewerten Kunden unsere API Testing Experts 4.9 von 5 Sternen.
API Testing Experts anheuern

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!

Von 11,162 Bewertungen, bewerten Kunden unsere API Testing Experts 4.9 von 5 Sternen.
API Testing Experts anheuern

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    9 Jobs gefunden

    Necesito completar la verificación de mi pequeña empresa en la API de WhatsApp Business y dejar todo funcionando para enviar Codigos de Verificacion. Ya cuento con una cuenta de WhatsApp Business; lo que falta es: 1. Realizar el proceso de verificación ante Meta, incluyendo carga de documentos y ajustes de perfil. 2. Configurar la API (Facebook Business Manager y número telefónico) hasta que los webhooks respondan correctamente. 3. Probar el flujo enviando un par de mensajes de “Actualizaciones de pedidos” para confirmar que llegan sin errores. 4. Entregarme las credenciales, los tokens generados y un pequeño instructivo paso a paso para futuros ajustes. Valoraría que también revises buenas prácticas par...

    €16 Average bid
    €16 Gebot i.D.
    10 Angebote

    My Squarespace store already takes orders, TRUX’s dispatch API is live, and QuickBooks Online is running—we just need them to talk to each other. I want every new Squarespace order to pass through the TRUX API and then land in QuickBooks automatically, carrying across the full order record plus the customer’s details. Here’s what the finished workflow should do: • Capture each completed checkout on Squarespace, convert it to the format TRUX expects, and push it in real time to their API. • From TRUX, forward the data to QuickBooks so a matching sales transaction is created and the customer profile is added or updated. • Keep customer names, addresses, emails, and phone numbers in sync between the three systems without duplicates. • Ru...

    €419 Average bid
    €419 Gebot i.D.
    163 Angebote

    I am looking for an experienced reverse engineer or mobile security specialist to help analyze the network communication of an Android application. The application currently implements SSL certificate pinning, which prevents traffic inspection using standard interception tools (such as proxies). Because of this, I cannot capture the login requests and related API communication. Project Goals: Perform reverse engineering of the Android APK. Identify and bypass the SSL pinning protection implemented in the app. Enable traffic inspection so the login requests can be captured and analyzed. Document the login request structure and related API endpoints. Help replicate the login request programmatically using either: Node.js, or Python The final goal is to understand how the login API ...

    €399 Average bid
    €399 Gebot i.D.
    96 Angebote
    Web App Testing & Scripts
    4 Tage left
    Verifiziert

    I’m preparing our web application for a wider release and need a skilled QA partner to uncover every bug and friction point before we go live. Your task is to run a full sweep of the site—covering user-interface flow and overall usability, core functionality and performance under load, plus security and cross-browser/device compatibility. What I need from you: • A clear, well-structured test script in Excel. Each row should outline the test case, steps, expected outcome, actual result, and pass/fail status. Please include any supporting notes or screenshots that will help my dev team reproduce the issue quickly. • A consolidated bug and observation report highlighting severity, steps to replicate, and practical recommendations for smoothing the user experience....

    €79 Average bid
    €79 Gebot i.D.
    11 Angebote

    Job Description:
 We’re looking for a skilled and detail-oriented QA tester based in South Africa 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 South Africa (for regional ...

    €13 / hr Average bid
    €13 / hr Gebot i.D.
    42 Angebote
    Business Analyst & QA for Gym SaaS
    3 Tage left
    Verifiziert

    I’m steering the build-out of a gym-management and fitness-tracking SaaS that covers membership management plus personal-training and workout-tracking modules. The product will roll out simultaneously on Web, iOS and Android, and must serve three clear roles—Admin, Trainer and Member—right from day one. Your primary focus is to turn high-level feature ideas into crystal-clear user stories with acceptance criteria, keep them moving through design and development, and then verify the finished work. Day to day you’ll sit with me to refine requirements, document every task for the developers, and stay on top of the board until each story meets its definition of done. Once code is ready, you’ll hit the APIs in Postman, run functional UI passes on all platforms, pr...

    €10 / hr Average bid
    €10 / hr Gebot i.D.
    65 Angebote
    White-Box Web App Penetration
    2 Tage left
    Verifiziert

    I am ready to put my in-house web application through a thorough white-box penetration test and need a seasoned ethical hacker to run point. Because I can supply source code, architecture docs, and admin-level credentials, you will have full visibility to explore logic flaws, insecure configurations, and anything else that could turn into a real-world exploit. A key requirement is prior experience registering newly discovered vulnerabilities in official government vulnerability databases or repositories; I will rely on you not only to uncover issues but also to craft the correct disclosure package so the finding can be submitted and tracked according to policy. Scope • Inspect the entire codebase, APIs, and third-party integrations. • Execute manual and automated testing us...

    €178 Average bid
    NDA
    €178 Gebot i.D.
    20 Angebote

    The goal is to complete a thorough round of manual QA on my production-ready web application before the next release. All core journeys—login, form submissions, multi-step user workflows, and the main dashboard—must be verified end-to-end. Testing should run on Google Chrome, Mozilla Firefox, and Safari across Windows and macOS so we can be confident of cross-platform consistency. I also need coverage for every permission level: Admin, Regular user, and Guest. You will exercise standard functional and regression scenarios as well as edge cases to surface UI defects, logic errors, and stability issues. Please explore negative paths in addition to the happy paths, keeping an eye on usability and performance hiccups that might slip past automated checks. Deliverables: • A ...

    €10 / hr Average bid
    €10 / hr Gebot i.D.
    63 Angebote

    Hello, I am looking for an experienced Website QA Tester / Bug Finder to test my live web application: Website: The purpose of this project is to perform manual testing and identify real functional issues, not cosmetic suggestions. This is a small initial task. If the work quality is good, I will assign a complete testing project (long-term work). Scope of Work You need to thoroughly test the website like a real user and report at least 5 valid bugs. Testing should include: User registration & login Forms submission Validation errors Mobile responsiveness Payment / workflow process (if applicable) Broken flows Console errors Edge cases (wrong inputs, refresh, back button etc.) Bug Report Format (IMPORTANT) Each bug must include: Bug Title Steps to reproduce Expecte...

    €196 Average bid
    €196 Gebot i.D.
    84 Angebote

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