QA Automation Engineer – APIs, AI Agents & React Platforms

7 542.21 - 8 100.89 USDNet per month - B2B
Testing

QA Automation Engineer – APIs, AI Agents & React Platforms

Testing
Prosta 20, Warszawa

Senovo-It

Full-time
B2B
Mid
Remote
7 542.21 - 8 100.89 USD
Net per month - B2B

Job description

We are looking for a technically strong and detail-oriented QA Automation Engineer to ensure the reliability, scalability, and performance of a modern cloud-based platform built on:


  • .NET REST APIs (microservices architecture)

  • AI/LLM-based agents and workflow orchestration

  • Multiple ReactJS front-end applications


This role goes beyond traditional testing. You will be responsible for building automation frameworks, validating AI-driven systems, and ensuring seamless integration across backend services and frontend applications.


Key Responsibilities

  • Design and execute test strategies across APIs, AI workflows, and React UIs

  • Build and maintain automated API and UI test suites

  • Validate AI agent logic and prompt-driven workflows

  • Perform integration, regression, and performance testing

  • Integrate automated tests into CI/CD pipelines

Requirements

  • 3+ years (Mid) / 5+ years (Senior) in QA Engineering

  • Strong experience testing REST APIs and .NET backends

  • Experience testing ReactJS applications

  • Hands-on automation experience (Cypress, Playwright, Selenium, Postman, etc.)

  • CI/CD experience (Azure DevOps, GitHub Actions)

  • Familiarity with OAuth2 / JWT

Nice to Have

  • Experience testing AI / LLM-based systems

  • Docker & microservices experience

  • Performance testing tools (k6, JMeter)

Tech Environment: .NET, ReactJS, Azure, AI agents, CI/CD pipelines.


If interested and available, please share your cv for an immiediate consideration

Tech stack

    Automated Testing

    master

    .NET C#

    master

    Microservices

    master

    AI

    master

    ReactJS

    advanced

    API Testing

    advanced

    Microsoft Azure Cloud

    regular

Office location

Published: 24.02.2026

QA Automation Engineer – APIs, AI Agents & React Platforms

7 542.21 - 8 100.89 USDNet per month - B2B
Summary of the offer

QA Automation Engineer – APIs, AI Agents & React Platforms

Prosta 20, Warszawa
Senovo-It
7 542.21 - 8 100.89 USDNet per month - B2B
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