Senior Java Developer (7+ Years)

Geysers International; Chennai District; On-site; INR 2,600,000 - 4,800,000; Full time

Job summary

A leading software firm is seeking a Senior Java Developer in Tamil Nadu, Chennai District, to lead a Mainframe modernization program for a prominent US financial services client. The successful candidate will have over 7 years of experience migrating legacy systems to modern Java, utilizing Spring Boot and microservices architecture. Responsibilities include designing RESTful APIs, collaborating with cross-functional teams, and optimizing performance in regulated environments. This full-time position offers significant technical ownership and leadership opportunities.

Qualifications

• 7+ years of experience as a Java Developer/Senior Java Developer.
• Proven experience in legacy system migration and Mainframe modernization.
• Extensive hands-on experience with Spring Framework and Spring Boot.

Responsibilities

• Lead Mainframe modernization and legacy application migration efforts.
• Analyze and re-engineer Mainframe business logic into Java microservices.
• Design and develop RESTful APIs and distributed microservices.
• Define technical design, migration strategy, and data architecture.
• Perform code reviews, enforce best practices, and mentor team members.
• Collaborate with Mainframe, Data, QA, DevOps, and Architecture teams.
• Own performance optimization, scalability, and production readiness.
• Work closely with US-based client stakeholders in a client-facing role.

Skills

Java Development

Mainframe Migration

Spring Boot

Microservices Architecture

NoSQL Databases

DB2

CI/CD Pipelines

Distributed systems

Data migration

Cloud exposure

Spring Boot

Java 8+/11

High-availability systems

Client-facing

Tools

Maven

Gradle

Apache Cassandra

Docker

Kubernetes

Job description

We are hiring a Senior Java Developer (7 Years) for a large-scale Mainframe to Java migration and modernization program for a well-established US financial services client. The role involves migrating legacy Mainframe systems into modern Java, Spring Boot, and microservices-based architectures, handling high-volume transactional data in a regulated BFSI environment.

Experience Required

• 7+ of strong hands-on experience as a Java Developer / Senior Java Developer
• Proven experience in legacy system migration, preferably Mainframe modernization or Mainframe to Java migration
• Experience working on enterprise-scale, high-availability systems

Key Responsibilities

• Lead and contribute to Mainframe modernization and legacy application migration
• Analyze Mainframe business logic and re-engineer it into Java 8+/Java 11 Spring Boot microservices
• Design and develop RESTful APIs and distributed microservices
• Define technical design, migration strategy, and data architecture
• Perform code reviews, enforce best practices, and mentor team members
• Collaborate with Mainframe, Data, QA, DevOps, and Architecture teams
• Own performance optimization, scalability, and production readiness
• Work closely with US-based client stakeholders in a client-facing role

Mandatory Technical Skills

• Extensive hands‑on experience with Spring Framework, Spring Boot, Spring MVC, Spring Data JPA
• Strong understanding of Microservices Architecture and Distributed Systems
• Deep hands‑on experience with Hibernate / JPA
• Strong experience with RDBMS, especially DB2 (Oracle / PostgreSQL acceptable)
• Solid knowledge of SQL, data modeling, and performance tuning
• Experience with Maven / Gradle and CI/CD pipelines (Jenkins)

NoSQL & Data Migration Skills (Critical)

• Strong working experience with NoSQL databases, especially Apache Cassandra
• Hands‑on experience in Cassandra data modeling and performance tuning
• Experience in data migration, transformation, and reconciliation from Mainframe / RDBMS to NoSQL
• Understanding of high‑volume data processing and eventual consistency

Good to Have Skills

• Functional understanding of Mainframe technologies (COBOL, JCL, VSAM, batch processing)
• Experience with Docker, Kubernetes, and containerization
• Exposure to Cloud platforms (AWS / Azure) and cloud migration
• Experience with event‑driven architecture
• Strong background in Banking / Financial Services (BFSI) domain

Leadership & Soft Skills

• Strong system design and technical design skills
• Proven ability to mentor developers and lead technical discussions
• Strong analytical and problem‑solving skills
• Excellent communication skills in a global delivery model
• Comfortable working in regulated, enterprise financial systems
• Employment Type: Full‑time
• Joining: Immediate / Short Notice preferred

Salary Range

• Market‑aligned, based on experience and expertise

Why Join Us?

• Lead a mission‑critical Mainframe modernization program
• Work with a top‑tier US financial institution
• High technical ownership and architectural exposure
• Opportunity to work on modern Java, microservices, NoSQL, and cloud‑native systems

Contact

📩 Interested candidates can apply via LinkedIn or share their resume at [e-mail].