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Senior Java Developer (7–10 Years)

Geysers International

5 - 10 years

Chennai

Posted: 08/01/2026

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Job Description

We are hiring a Senior Java Developer (710 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.


Location : Chennai

Client : Reputed Financial Institution USA

Immediate / Short Notice Joiners Preferred


Experience Required

  • 710 years 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
  • Follow Agile / Scrum development methodologies


Mandatory Technical Skills

  • Strong expertise in Java (Java 8 / Java 11 / Java 17)
  • Extensive hands-on experience with Spring Framework, Spring Boot, Spring MVC, Spring Data JPA
  • Strong understanding of Microservices Architecture and Distributed Systems
  • Proven experience in REST API development
  • 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


Job Details

  • Employment Type: Full-time
  • Work Location: Chennai
  • 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
  • Long-term, stable engagement


Interested candidates can apply via LinkedIn or share their resume at

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