Senior Java Engineer - Scalable Backend & APIs

Myn; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Hybrid work

Job summary

Myn in London is recruiting for a Senior Java Engineer to join teams building and evolving large-scale, business-critical technology platforms.

You will design, build and enhance Java-based services and APIs as part of an experienced engineering team across development, modernisation and continuous improvement. This role emphasizes performance, resilience and quality in backend systems.

Qualifications

• Strong commercial Java development experience.
• Spring / Spring Boot.
• REST APIs and microservices.
• Experience building distributed, production-grade systems.
• CI/CD and automated testing.
• Good understanding of software design principles and clean, maintainable code.
• Experience working with cloud-based applications.
• Strong problem-solving and troubleshooting skills.
• Comfortable working within Agile engineering teams.
• Experience with AWS or GCP, Kubernetes, Terraform, Oracle, Linux or AI-assisted development tools would be advantageous.
• Previous fintech/payments/banking experience valuable but not essential.

Responsibilities

• Design, build and enhance Java-based services and APIs.
• Participate in the full development lifecycle from design to production support.
• Contribute to improving existing systems and engineering practices, including automation and AI-assisted development.

Skills

Java

Spring Boot

REST APIs

Microservices

CI/CD

AWS

Kubernetes

Agile

Troubleshooting

Cloud

Job description

Myn in London is recruiting for a Senior Java Engineer to join teams building and evolving large-scale, business-critical technology platforms.

You will design, build and enhance Java-based services and APIs as part of an experienced engineering team across development, modernisation and continuous improvement. This role emphasizes performance, resilience and quality in backend systems.