Lead Server-side Engineer (Java)

Description

Summary: Lead Server-side Engineer to design and evolve high-scale Backend for Frontend services for mobile experiences, driving technical direction and mentoring engineers. Highlights: 1. Lead design and delivery with a cross-functional team 2. Prioritize performance and code quality, shaping technical direction 3. Build server-side services in Java using Spring Boot We are looking for a **Lead Server\-side Engineer** to build and evolve a high\-scale Backend for Frontend service layer for mobile experiences used by tens of millions of cardholders worldwide. You will lead design and delivery with a cross\-functional team, prioritize performance and code quality, and help shape technical direction. Apply to join us. **Responsibilities** * Design the Backend for Frontend architecture for mobile\-facing APIs * Lead technical decisions and mentor engineers on best practices and code quality * Build server\-side services in Java using Spring Boot * Define and implement REST API contracts that support excellent client experiences * Write unit tests and enforce reliable automated test coverage * Optimize latency, throughput, and resource usage through performance analysis * Coordinate delivery with product, design, and QA to meet quality and timeline goals * Refactor legacy code to improve maintainability, readability, and safety * Fix production issues by debugging, triaging, and implementing robust solutions * Integrate with existing backend services, including bespoke legacy systems * Improve CI and build pipelines to increase delivery speed and confidence * Review code and promote clean, elegant, and secure implementations **Requirements** * 5\+ years of Java backend development experience * Strong leadership skills in guiding engineers and technical decision\-making * Proven project delivery experience in cross\-functional teams with product, design, and QA * Advanced Spring Boot knowledge for building server\-side applications * Strong REST API design skills for mobile\-facing service layers * Solid algorithms and data structures knowledge for solving complex problems * Strong unit testing skills and test\-driven development mindset * Hands\-on performance analysis and optimization skills for high\-traffic services * Experience with CI and build tools in modern engineering workflows * Strong problem\-solving skills for open\-ended solution design and legacy integrations * Clear communication skills and willingness to share ideas and drive alignment * Bachelor’s degree in Computer Science or related field, or equivalent experience * English Upper\-Intermediate (B2\) proficiency **Nice to have** * Docker for local development and service packaging * Gradle for build configuration and dependency management * GraphQL for API schema design and query optimization * Kotlin for JVM\-based backend development * RAML for API modeling and documentation **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