Senior Full-Stack Java Developer

EPAM Systems, Inc.; California (MO); Hybrid; USD 140,000 - 180,000; Full time

Job summary

EPAM Systems, Inc. is seeking a Senior Full-Stack Java Developer to own the maintenance and modernization of a portfolio of enterprise Gateway applications.

You’ll work with Java Spring Boot microservices and Angular front-ends (from Angular 8 to Angular 18), focusing on security, code quality, and long-term maintainability, collaborating with the Principal Engineer to drive platform health. This hands-on role demands 8+ years of software engineering experience, strong REST API and backend

Qualifications

• 8+ years of professional software engineering experience.
• Expert-level knowledge of Java and Spring Boot.
• Strong experience with enterprise REST APIs and backend architecture.
• Hands-on Angular experience, including upgrades (Angular 8+).
• Proficiency in TypeScript, RxJS, and modern frontend practices.
• Experience with security remediation tools (Veracode, CAST, SonarQube).
• Excellent communication and collaboration skills.
• Ownership mindset in fast-paced enterprise environments.

Responsibilities

• Contribute to maintenance and modernization of enterprise Gateway apps across backend and frontend.
• Drive remediation of security vulnerabilities identified by tools such as Veracode, CAST, and SonarQube.
• Support dependency upgrades, framework modernization, refactoring, and technical debt reduction.
• Design and implement secure, maintainable solutions with Java Spring Boot and Angular.
• Contribute to Angular modernization across legacy and current codebases.
• Participate in architecture and code reviews while upholding engineering best practices.
• Collaborate with architects, security, QA, and product stakeholders to prioritize remediation.
• Support long-term platform health via ongoing security and maintainability improvements.

Skills

Java

Spring Boot

Angular

TypeScript

RxJS

REST APIs

Microservices

Docker

Kubernetes

Security

DevOps

CI/CD

Tools

Veracode

CAST

SonarQube

Apigee

AWS

Azure

GCP

Docker

Kubernetes

Job description

Join EPAM's engineering team as a Senior Full-Stack Java Developer and take ownership of maintaining and modernizing a portfolio of enterprise-grade Gateway applications. You'll work in a dynamic environment built around Java Spring Boot microservices and a diverse set of Angular front-end applications — from legacy Angular 8 to modern Angular 18 implementations. This is a hands‑on technical role focused on improving application security, code quality, and long‑term maintainability while collaborating closely with the Principal Engineer. You'll have direct impact on the platform's health, engineering culture, and the technical growth of the team.

Req# 1074738620 Responsibilities

• Contribute to the maintenance and modernization of enterprise Gateway applications across backend and frontend
• Drive remediation of security vulnerabilities identified by tools such as Veracode, CAST, and SonarQube
• Support dependency upgrades, framework modernization, refactoring, and technical debt reduction
• Design and implement secure, maintainable solutions using Java Spring Boot and Angular
• Contribute to Angular modernization efforts across legacy (Angular 8) and current (Angular 18) codebases
• Participate in architecture and code reviews while adhering to and promoting engineering best practices
• Collaborate with architects, security teams, QA, and product stakeholders to prioritize remediation activities
• Support long-term platform health through continuous security and maintainability improvements

Requirements

• 8+ years of professional software engineering experience
• Expert-level knowledge of Java and Spring Boot
• Strong experience with enterprise REST APIs and backend application architecture
• Hands‑on experience with Angular applications, including version upgrades and modernization (Angular 8+ preferred)
• Strong command of TypeScript, RxJS, and modern frontend development practices
• Proven experience in application modernization, dependency management, and technical debt reduction
• Experience remediating security vulnerabilities using tools such as Veracode, CAST, SonarQube, or equivalents
• Excellent communication and collaboration skills
• Strong ownership mindset with the ability to thrive in a fast‑paced enterprise environment
• Nice to have: Experience with Apigee API gateway platform
• Familiarity with cloud platforms (AWS, Azure, or GCP)
• Background in microservices architecture and containerization (Docker, Kubernetes)
• Experience with CI/CD pipelines and DevOps practices