Senior Backend Engineer - Spring Boot & REST APIs

EPAM Systems, Inc.; United States; Remote; USD 110,000 - 160,000; Full time

Job summary

EPAM Systems, Inc. is seeking a Senior Server-side Engineer to design and evolve a Backend for Frontend layer powering high-traffic mobile experiences.

You will build Spring Boot services in Java, implement REST endpoints, and collaborate with product, design, and QA to deliver reliable APIs and scalable systems. You will optimize performance, write unit tests, mentor peers, and participate in CI pipelines, while refactoring legacy code and integrating with existing services.

Qualifications

• 3+ years of Java experience building server-side applications.
• Strong Spring Boot knowledge for building scalable services.
• Strong REST API design skills for contract-first, maintainable endpoints.
• Experience with CI/build automation and cross-functional collaboration.

Responsibilities

• Design backend-for-frontend APIs that support mobile client use cases.
• Build Spring Boot services in Java with clean, maintainable architecture.
• Implement REST endpoints with clear contracts and predictable behavior.
• Write unit tests to protect critical logic and enable safe changes.
• Refactor legacy code to improve readability, safety, and extensibility.
• Integrate with existing backend services and adapt to evolving interfaces.
• Implement asynchronous flows where needed to improve responsiveness.
• Automate builds and checks within CI pipelines.
• Review code to uphold standards and share best practices.
• Collaborate with product, design, and QA to deliver end-to-end features.

Skills

Java

Spring Boot

REST APIs

Unit testing

CI/CD

Asynchronous programming

Performance optimization

Code refactoring

Communication

Leadership

Education

Bachelor's degree in Computer Science or related field

Tools

Docker

Gradle

GraphQL

RAML

Kotlin

Job description

EPAM Systems, Inc. is seeking a Senior Server-side Engineer to design and evolve a Backend for Frontend layer powering high-traffic mobile experiences.

You will build Spring Boot services in Java, implement REST endpoints, and collaborate with product, design, and QA to deliver reliable APIs and scalable systems. You will optimize performance, write unit tests, mentor peers, and participate in CI pipelines, while refactoring legacy code and integrating with existing services.