Java Developer

Senior Recruitment Consultant (Software) - USA at MCS Group | ☎

Location: Iselin, New Jersey (no relocation, must be ready for face to face interview immediately)

Visa: No sponsorship

We're working with a leading financial services organisation that's building next-generation payment platforms used at enterprise scale. They're looking for a Senior Java Developer with deep payments experience to join a high-performing engineering team responsible for secure, high-volume transaction processing.

This is a hands-on senior role with real influence over system design, architecture, and delivery.

• Designing and building large-scale Java applications focused on real-time payment processing.
• Working across modern payment rails including ACH, ISO 20022, wire and card-based transactions.
• Developing secure, high-performance APIs and microservices that operate at scale.
• Partnering with product, business, and security teams to turn complex requirements into elegant technical solutions.
• Ensuring systems meet strict security and regulatory standards within financial services.
• Improving and modernising existing platforms with a focus on performance, resilience, and scalability.
• Providing technical leadership through code reviews, mentoring, and best practice advocacy.
• Contributing to architectural decisions and long-term platform strategy.

• 7+ years experience building Java-based systems in payments environments.
• Strong understanding of payment processing concepts, standards, protocols, and messaging formats.
• Proven experience with Java Spring Boot, microservices architecture, cloud deployment and RESTful APIs.
• Solid knowledge of secure system design and handling of sensitive financial data.
• Experience working in Agile teams and collaborating across disciplines.
• Confident communicator who can influence technical direction.

• Exposure to modern cloud platforms (AWS, Azure, or GCP).
• Experience with event-driven systems and messaging technologies such as Kafka.
• Familiarity with CI/CD pipelines and Dev Ops tooling.

If you have a disability which means you require assistance at any stage of the recruitment process, please contact us directly to discuss. MCS Group is committed to providing equality of opportunity to all.

$/yr - $/yr