Senior Server-side Engineer (Java)

We are seeking a Senior Server-side Engineer to build the Mobile application Service Layer used by millions worldwide.

You will work on the Mobile application Service Layer (Backend for Frontend) consumed by award-winning mobile apps, collaborating with a large team of engineers, product people, designers, and QA. This role requires strong technical skills, creativity, and a passion for solving challenging problems with modern technologies.

If you enjoy sharing your ideas and care deeply about user experience and beautiful code, we encourage you to apply.

Responsibilities

• Build server-side applications for the mobile service layer
• Write clean, efficient, and maintainable code
• Refactor legacy code to improve performance and readability
• Delete obsolete code to streamline the codebase
• Develop and maintain build tools and continuous integration processes
• Fix bugs and troubleshoot production issues
• Implement asynchronous code for better performance
• Analyze and optimize application performance
• Create and maintain unit tests to ensure code quality
• Collaborate with a cross-functional team including product, design, and QA
• Integrate with bespoke backend services
• Design solutions for open-ended problems
• Contribute to open source projects within the team

Requirements

• Bachelor’s degree in Computer Science or a related field, or equivalent experience
• Strong experience with algorithms and data structures with 3+ years in server-side development
• Proficiency in REST API design and implementation
• Hands-on experience with Spring Boot framework
• Experience writing unit tests and test-driven development
• Knowledge of asynchronous programming and performance optimization
• Ability to work effectively in a team environment
• Self-starting attitude with strong problem-solving skills
• Experience with legacy code refactoring and maintenance
• Proficiency in English language, level B2 (Upper-Intermediate)

Nice to have

• Experience with Docker containerization
• Familiarity with Gradle build automation
• Knowledge of GraphQL APIs
• Proficiency in Kotlin programming language
• Experience with RAML API modeling

We offer

• International projects with top brands
• Work with global teams of highly skilled, diverse peers
• Healthcare benefits
• Employee financial programs
• Paid time off and sick leave
• Upskilling, reskilling and certification courses
• Unlimited access to the LinkedIn Learning library and 22,000+ courses
• Global career opportunities
• Volunteer and community involvement opportunities
• EPAM Employee Groups
• Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn