About this opportunity
EPAM Systems lists this Senior Java Developer (with Kotlin) opportunity in phoenix, Arizona. Review the employer’s description below for duties, qualifications and application requirements.
Job description
We're seeking a Senior Java Developer with strong Kotlin expertise to build and scale the Backend for Frontend (BFF) service layer powering mobile applications used by tens of millions of users worldwide. This is a hybrid role requiring 3 days onsite in Atlanta, GA or Phoenix, AZ. If you thrive on solving complex problems, writing clean code, and building high-performance APIs — we'd love to connect.
Req#
Responsibilities
Build & Scale Backend Services: Design, develop, and maintain the server-side API layer consumed by award-winning mobile applications
Write High-Quality Code: Deliver clean, well-tested, production-ready Kotlin/Java code with a focus on performance and maintainability
Optimize & Refactor: Improve existing systems, modernize legacy code, and drive performance analysis and optimization efforts
Integrate Complex Systems: Connect with internal backend services, third‑party APIs, and data sources across a distributed architecture
Collaborate Cross‑Functionally: Work closely with mobile engineers, product managers, designers, and QA to deliver seamless end‑to‑end experiences
Requirements
Experience: 5+ years of professional experience in server-side software development with Java; Bachelor's degree in Computer Science or equivalent experience
Kotlin: Strong hands‑on proficiency in Kotlin for backend development is required
API Development: Solid experience building and maintaining RESTful APIs, with familiarity in asynchronous programming and performance optimization
Engineering Practices: Strong foundation in unit testing, CI/CD, build tools (Gradle), code reviews, and software development lifecycle best practices
Problem Solving: Proven ability to design solutions for open‑ended problems, debug complex issues, and work effectively with legacy systems
Collaboration & Ownership: Self‑starting mindset with excellent communication skills and the ability to thrive in a large, cross‑functional team environment
Nice to have
Experience with GraphQL (GQL) or RAML for API design and documentation
Contributions to or experience working with open-source projects
Background in building Backend for Frontend (BFF) layers or mobile‑facing service architectures
We offer
Medical, Dental and Vision Insurance (Subsidized)
Health Savings Account
Flexible Spending Accounts (Healthcare, Dependent Care, Commuter)
Short‑Term and Long‑Term Disability (Company Provided)
Life and AD&D Insurance (Company Provided)
Employee Assistance Program
Unlimited access to LinkedIn learning solutions
Matched 401(k) Retirement Savings Plan
Paid Time Off
Legal Plan and Identity Theft Protection
Accident Insurance
Employee Discounts
Pet Insurance
Employee Stock Purchase Program
EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our clients, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting‑edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.
Engineer the Future with a Career at EPAM
Applications will be accepted on a rolling basis.
EPAM will not provide new H-1B visa sponsorship for this position. Candidates with existing transferable H-1B status may be considered.
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Worksite address
phoenix, AZ, 85003, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.