Sanderson
Senior Back End Developer, Java, AWS
Skills
10 days ago
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Important information
Contract type:
Freelance / Contract
Location:
London, UK
Work mode:
Onsite
Published on:
10 October 2026
What they need
Senior Backend Developer (Java / Spring Boot / AWS)
Rate: £500 - £600 Outside IR35
Location: London – 1 day per week.
Duration: 6 months initial
The role:
I'm working with a financial services organisation that needs a Senior Backend Developer to build and maintain cloud-based services on AWS. The work is hands-on and includes code reviews and input into technical decisions.
Responsibilities:
- Build REST and event-driven microservices in Java and Spring Boot
- Deploy and support services on AWS (e.g. ECS/EKS, Lambda, RDS, DynamoDB, SQS/SNS)
- Own services from design through to production support
- Maintain CI/CD pipelines and infrastructure as code (Terraform, CloudFormation or CDK)
- Review code and contribute to architecture decisions
Essential skills:
- Commercial experience with Java 21 and Spring Boot
- Building and running applications on AWS
- Microservices and API design
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