Senior Java Backend Engineer - IAM & Microservices (Dunton)

Square One Resources; England; Hybrid; GBP 62,000 - 103,000; Part time

Job summary

Square One Resources is seeking a Senior Software Developer for a contract role in the financial services sector. The position is based in Dunton with four days on-site per week and a daily rate of up to £560.

The assignment runs initially until the end of the year, with a high likelihood of extension into 2027. You will design and build backend services in Java, implement IAM solutions, and work within a regulated environment to ensure secure and scalable systems.

Qualifications

• Backend design and development for high-scale services.
• Java development with backend focus.
• Experience building highly available backend services.
• Experience in regulated financial services environments.
• Knowledge of IAM platforms and authentication standards.

Responsibilities

• Designing and building high-scale backend services using Java
• Developing secure and resilient identity and access management solutions
• Working on systems supporting high-volume transactional workloads in a regulated environment
• Applying Test Driven Development (TDD) throughout the software development lifecycle

Skills

Backend development

Java

Microservices

IAM

OAuth/OpenID Connect/SSO

Cloud platforms

Regulated environment experience

Financial services domain

Job description

Square One Resources is seeking a Senior Software Developer for a contract role in the financial services sector. The position is based in Dunton with four days on-site per week and a daily rate of up to £560.

The assignment runs initially until the end of the year, with a high likelihood of extension into 2027. You will design and build backend services in Java, implement IAM solutions, and work within a regulated environment to ensure secure and scalable systems.