Senior Software Development Engineer in Test (SDET .NET+JS)

We are seeking a highly skilled Senior SDET to join our client’s Digital Ecommerce team and take ownership of advanced test automation initiatives across internal high-traffic platforms. The ideal candidate will be an expert in building scalable automation frameworks, validating complex distributed systems, and ensuring quality across web, API, mobile, and cloud-native solutions. This role requires a strong engineering mindset, hands-on automation expertise, and readiness to leverage AI tools and AI agents to accelerate testing, troubleshooting, and framework development..

About the Client Our client is a leading global IT solutions distributor, supporting partners in over 100 countries. They provide a wide range of hardware, software, cloud, and infrastructure solutions, helping technology partners scale and maximize the value of their investments. In the local market, they maintain a strong presence and continue to expand their portfolio across IT, AV, unified communications, and gaming solutions. What You’ll Do ● Design, implement, and maintain modular, scalable automation frameworks using C#/.NET, MSTest, xUnit; or Python/JS ● Develop end-to-end automated tests for web, API, and mobile applications using Selenium, Playwright, and Appium with parallel and headless execution ● Automate API and microservices testing (Postman, RestAssured, Karate), including contract, negative, and fuzz testing ● Test SQL and NoSQL databases, ensuring data accuracy, integrity, and consistency across distributed systems ● Conduct load, stress, and scalability tests, apply chaos engineering, and collaborate on observability using Azure Monitor, Application Insights, Dynatrace, or ELK ● Deploy and manage test frameworks in cloud and container environments (AKS, Docker) and automate provisioning via Azure CLI ● Integrate automated tests into CI/CD pipelines with quality gates, static analysis, parallel execution, and fail-fast mechanisms ● Collaborate with Development, DevOps, and QA teams, produce documentation, deliver training, and conduct peer code reviews What You Bring ● 8+ years in software testing; 3+ years in automation/SDET. ● Strong C#/.NET Core + exposure to JavaScript/Python. ● Expertise in Selenium/Cypress/Playwright/Appium. ● API testing tools: Postman, RestSharp, Karate. ● Cloud & DevOps experience: Azure, Docker, Kubernetes, Azure DevOps. ● SQL/NoSQL testing experience. ● AI-ready: ability to use LLM tools and implement AI agents in workflows. English level Advanced

🌍 Location: Bulgaria, Lithuania, Poland, Romania, Uzbekistan

📩 Ready to Join? We look forward to receiving your application and welcoming you to our team!