We are seeking a

Senior Java Developer to join an AWS ProServe mainframe modernization engagement. This initiative transforms legacy COBOL/JCL business logic into cloud-native Java microservices, leveraging agentic AI capabilities to accelerate code generation and ensure functional equivalence with source systems.

Responsibilities

- Transform decomposed mainframe business logic from COBOL and JCL into cloud-native Java microservices using Spring Boot and modern architectural patterns

- Leverage agentic AI tools to generate microservice specifications, modernized application code, and Infrastructure as Code from reverse-engineered mainframe components

- Validate AI-generated output for functional equivalence against original mainframe logic, identify and resolve transformation gaps

- Review and refine mappings between mainframe constructs and target Java microservice implementations to preserve business logic

- Collaborate with architects to refine microservice designs, optimize service boundaries, and implement appropriate API contracts

- Document transformation decisions, architectural patterns, and integration specifications to support knowledge transfer and maintenance

Requirements





- 5+ years of experience in Java development with advanced expertise in Spring Boot

- Advanced skills in microservice architecture style

- Proficiency in AWS Mainframe Modernization services and application modernization

- Reading comprehension of COBOL, JCL, and VSAM file structures

- Familiarity with CICS transaction processing on IBM Mainframe

- Proficiency in English at a B2+ level

Nice to have

- Understanding of cloud-native development patterns

- Knowledge of AWS Transform

- Background in Kiro and AI-assisted development tools

We offer

- International projects with top brands

- Work with general 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

📌 Senior Java Developer, Mainframe Modernization (Argentina)
🏢 EPAM Systems
📍 Argentina