Java API Developer Officer

Salary: £60,000 - 90,000 per year

Requirements:

• Hands-on experience developing Java backend applications, including REST API development in production or near-production environments.
• Familiarity with common Java API frameworks and patterns such as Spring Boot or Spring MVC-style services, and building maintainable service layers.
• Understanding of secure API fundamentals, including authentication and authorization concepts and safe handling of sensitive data, with willingness to follow enterprise standards.
• Strong grasp of SDLC basics, including source control, code reviews, automated testing, and working in Agile delivery.
• Experience working in financial services or another regulated environment where reliability, controls, and documentation matter.
• Awareness of internal enterprise API governance and onboarding concepts.
• Experience with tools commonly used in enterprise Java teams, such as Maven and Jira-style workflows, and basic observability practices.
• Familiarity with digital asset concepts such as custody, tokenization, wallets, or blockchain-adjacent workflows.
• Exposure to API integration patterns with third parties and documentation for API consumers.

Responsibilities:

• Design, develop, and maintain Java-based backend services and REST APIs that support financial services workflows and data use cases.
• Implement APIs in line with internal requirements for API design, security, versioning, and documentation.
• Collaborate with business and technology stakeholders to understand requirements, clarify edge cases, and deliver well-scoped API changes in an Agile sprint model.
• Write automated tests, including unit and integration tests, participate in peer code reviews, and contribute to quality gates for each release.
• Support service troubleshooting and production readiness activities such as logging, monitoring, defect triage, and minor performance tuning with guidance from senior team members.
• Maintain clear technical documentation for APIs and integrations, including endpoints, payloads, dependencies, and operational notes.

Technologies:

• API
• Backend
• Blockchain
• Support
• JIRA
• Java
• Maven
• MVC
• REST
• Security
• Spring
• Spring Boot

More:

We are State Street, and institutional investors around the world rely on us to help manage risk, respond to challenges, and drive performance and profitability. We put our clients at the heart of everything we do, and we value smart, engaged employees as essential to our continued success. We foster an environment where every employee feels valued and empowered to reach their full potential, with inclusive development opportunities, flexible work-life support, paid volunteer days, and vibrant employee networks. This is a full-time role based in London, England, and it is focused on our Digital Asset development team in a financial services environment. We are an equal opportunity employer and welcome qualified applicants from all backgrounds.

last updated 34 week of 2026