Senior Java Engineer

We’re looking for a Senior Java Engineer to join Payforge and work with one of our key clients in the card issuing and processing domain. You’ll help design and build high-performance, secure, and scalable services that power digital card issuance, authorization, and transaction processing — the backbone of modern payments infrastructure.

Key Responsibilities

• Design, develop and maintain enterprise-grade applications using Java and Spring Boot.
• More specifically, design and build a scalable card issuing and processing platform to support high volume transaction processing.
• Collaborate with solution architects and DevOps engineers to ensure reliability, scalability, and compliance with financial industry standards.
• Implement from scratch features such as Card Management, Client Management, Transaction Processing or additional payment rails (ex. Swift)
• Write high-quality, testable, and maintainable code using modern engineering best practices.
• Participate in code reviews, testing, and continuous improvement of CI/CD pipelines and deployment workflows.
• Ensure solutions meet performance benchmarks, security requirements (PCI DSS, ISO 8583 compliance), and SLAs.

Skills & Experience

• Experience: 5+ years of professional Java development experience.
• Strong knowledge of Java 21 and Spring Boot 3, with hands-on experience in building microservices.
• Experience with cloud managed(ex Amazon RDS) relational databases (PostgreSQL, MySQL)
• Understanding of messaging systems (Kafka, RabbitMQ) for real-time event streaming.
• Knowledge of Docker, Kubernetes, and cloud platforms such as AWS (RDS, S3, EKS).
• Experience with build tools (Maven, Gradle) and CI/CD pipelines (GitHub Actions, Jenkins).
• Strong unit and integration testing skills using JUnit, Mockito, and Testcontainers.
• Familiarity with security and encryption protocols (TLS, HSM integration, tokenization, PCI DSS) will be a strong plus.
• Familiarity with card issuing, transaction flows, and ISO 8583 or REST-based processing APIs is highly desirable.
• Exposure to fintech or payments systems (authorization, clearing, settlement) is a significant advantage.

What we value?

• Precision & reliability – building software that meets the highest standards for performance and accuracy.
• Security-first mindset – understanding and applying strong security practices throughout the development process.
• Collaboration – working effectively with diverse technical and business stakeholders across teams and geographies.
• Ownership & accountability – taking initiative to deliver high-quality, production-ready code.
• Curiosity & innovation – staying up to date with emerging trends in the payments and card processing industry.

About Payforge

Payforge is a specialist professional-services company focused exclusively on payments and fintech. We help clients deliver high-quality, scalable technology solutions in an evolving global financial landscape.

Equal Opportunity Statement

Payforge is proud to be an equal-opportunity employer. All qualified applicants will receive consideration without regard to race, colour, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. We welcome applicants from all backgrounds.