Java Developer

Senior Java Developer Credit Card Processing Systems

A leading financial institution is seeking a Senior Java Developer to support its Credit Card Processing Systems team. This role is part of a strategic modernization initiative requiring onshore engineering support for automation and validation tasks. The ideal candidate will have strong experience in Java development, microservices architecture, and automation testing, along with the ability to collaborate across infrastructure and security teams.

Key Responsibilities:

• Participate in technical requirement gathering and Agile ceremonies.
• Design, develop, and maintain Java-based microservices and automation frameworks.
• Implement and support CI/CD pipelines.
• Collaborate with infrastructure teams on API security, container orchestration, and observability.
• Provide production support and post-deployment assistance.
• Develop and maintain documentation and testing procedures.
• Troubleshoot and resolve issues across development and production environments.

Required Skills:

• Programming & Automation: Core Java, Selenium, RestAssured, Cucumber (BDD), CI/CD tools
• API & Microservices: API Gateways, Service Mesh (ISTIO), OAuth2, JWT, mTLS
• Databases & Streaming: Oracle, Postgres, Cassandra, MongoDB, Kafka, SQL Server
• DevSecOps & Monitoring: Docker, Kubernetes, Splunk, Datadog
• Tools & Productivity: Microsoft Office, Teams, JIRA, ServiceNow, GitLab/GitHub

Preferred Skills:

• Experience with cloud platforms such as AWS or Azure
• Knowledge of DB2 schema design, SQL tuning, and database administration tools

Project Context:

This role supports a critical modernization initiative requiring close collaboration with cross-functional teams during U.S. business hours. The position is approved by senior leadership and is considered essential to the success of the program.

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.