Java Software Engineer (Contract Outside of IR35)

  • TwinStream
  • Oct 30, 2025
Full time I.T. & Communications

Job Description

Java Software Engineer (Contract Outside of IR35)

Remote

Who are we:

In 2019, our founders were working as engineers solving complex cross domain problems within government organisations. TwinStream was formed to consolidate their collective expertise and experience into one business, providing technical excellence and exceptional service to our clients. We have teams working both on site with clients and remotely from home.

Salary: £450 - £550 Outside of IR35

Location: Remote

About the role:

TwinStream software engineers (Java) develop components of a cross domain security system within an agile development team. They are involved in the entire software development lifecycle, including understanding the need for change, software design, coding, testing, delivery, and support. A TwinStream software engineer is not just a coder; they comprehend the business and domain challenges and utilize their technical skills to address those issues.

Responsibilities
  • Understand high level requirements and collaborate to find solutions
  • Investigate technologies to gain a deep understanding of their applicability
  • Develop high quality code
  • Problem solve deeply technical issues
  • Build tests at all stages of development from, unit tests to acceptance & performance tests
  • Build deployment code and pipelines, consulting with DevOps specialists
  • Analyse and resolve issues from 3rd line support
  • Collaborate in code development and review colleagues' work
  • Any other reasonable duties relevant to skills and experience.
Key Skills
  • Experience in developing software using our core and/or related technologies
  • Experience in agile working practices including
  • TDD
  • BDD
  • DevOps
  • Open, honest & positive attitude
Core Technologies

The following technologies are used extensively in our solutions:

  • Java
  • Spring Boot
  • AWS - S3, Fargate
  • REST
  • Docker
  • Terraform
  • Ansible
  • Jenkins
  • GIT/Bitbucket
  • OpenShift
  • Docker Compose/Swarm
  • Terraform

Further Information:

To meet the security requirements of certain clients and industries we serve, any job offer will be contingent upon the successful completion of a security screening process.

At TwinStream, we take pride in being an equal opportunity employer. We celebrate diversity and are committed to fostering an inclusive environment where all individuals are valued and respected. We welcome applications from qualified candidates regardless of race, religion, disability, age, sexual orientation, or gender.