As a Senior Software Engineer (JavaScript) on the B2B team, you’ll play a key role in improving the quality, reliability, and performance of our existing applications.

REQUIREMENTS

• 5+ years of front-end development experience (e-commerce or SaaS environments preferred)
• Proficiency in modern JavaScript frameworks, especially React with TypeScript, Redux and React Context
• Hands on experience with React Testing Library and Mock Service Worker (MSW)
• Solid understanding of GraphQL and RESTful APIs
• Practical experience with end-to-end testing tools, particularly Playwright
• Familiarity with performance tooling, observability (e.g., Sentry), and CI/CD workflows

WE OFFER

• By choosing EPAM, you’re getting a job at Great Place To Work-Certified™ in 2024, Glassdoor’s Top 100 Best Places to Work in 2023 & one of Most Loved Workplace, as recognized by Newsweek, 2021 - 2023.
• Employee ideas are the main driver of our business. We have a very supportive environment where your voice matters.
• You will be challenged while working side-by-side with the best talent globally. We work with top-notch technologies, constantly seeking new industry trends and best practices.
• We offer a transparent career path and an individual roadmap to engineer your future & accelerate your journey.
• At EPAM, you can find vast opportunities for self-development: online courses and libraries, mentoring programs, partial grants of certification, and experience exchange with colleagues around the world. You will learn, contribute, and grow with us.

• Lead efforts to improve code quality, refactor legacy code, and adopt best practices for maintainability and scalability
• Manage complex state and side-effects with Redux and React Context
• Write robust unit and integration tests with Mock Service Worker (MSW) and React testing library (RTL)
• Ship and maintain reliable end-to-end (E2E) tests using Playwright
• Collaborate with product managers, designers, and backend engineers to deliver quality code
• Contribute to code reviews, design discussions, and continuous improvement of team practices
• Work independently while maintaining close communication with the team through asynchronous tools and regular standups