Java Software Engineer (contract outside of IR35)
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Before you apply
LocationRemote
Work moderemote · United Kingdom
Typecontract
DepartmentOperations
Company size51–200 people
PostedOct 26, 2026 · 1w ago
Verified live7h ago
At a glanceSummarised by Seekless from the posting.
Experience in developing software using our core and/or related technologies
An agile development mindset
Experience in agile working practices including TDD, BDD, Continuous delivery, DevOps, Pair programming, Estimating & Planning
Open, honest & positive attitude
BPSS security clearance
Eligibility for BPSS / SC / DV clearance
UK Government's residency and right-to-work requirements
Skills
Java
Spring Boot
AWS
S3
Fargate
Lambda
SQS
SNS
RDBMS
Postgres
Oracle
JPA
MongoDB
DynamoDB
REST
RabbitMQ
Docker
Linux
Terraform
Ansible
Jenkins
GIT
Bitbucket
GitLab
Kubernetes
OpenShift
Docker Compose
Swarm
C++
About Us
In 2019, the founders were working as engineers solving complex cross-domain problems within government organisations.
TwinStream was formed to bring together their collective expertise and experience into a single business, focused on delivering technical excellence and high-quality service to clients.
Since then, the company has grown to over 100 team members across the UK, with colleagues working both on-site with clients, hybrid and remotely from home.
Details:
3-month (rolling) contract outside of IR35
Rate: £500 - £600 per day /
Location: Remote, with potential travel to the Bristol office in the future.
Security: BPSS
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, which includes 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-solving 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
•
Participate in indicative estimating & planning
•
Any other reasonable duties relevant to skills and experience.
Key Skills
•
Experience in developing software using our core and/or related technologies
•
An agile development mindset
•
Experience in agile working practices including
•
TDD
•
BDD
•
Continuous delivery
•
DevOps
•
Pair programming
•
Estimating & Planning
•
Open, honest & positive attitude
Core Technologies
Java is the primary development language. Some exposure to other languages is useful, including Python, JavaScript, Golang, Bash Scripting, although these languages are used only occasionally.
The following technologies are used extensively in our solutions:
•
Java
•
Spring Boot
•
AWS – S3, Fargate, Lambda, SQS / SNS
•
RDBMS (Postgres, Oracle) & JPA
•
Mongo DB
•
DynamoDB
•
REST
•
Rabbit MQ
•
Docker
•
Linux
•
Terraform
•
Ansible
•
Jenkins
•
GIT/Bitbucket
•
GitLab
•
Kubernetes
Desirable Skills
•
OpenShift
•
Docker Compose/Swarm
•
Terraform
•
Ansible
•
C++
Diversity & Inclusion
We’re committed to building a diverse and inclusive workplace. We welcome applications from people of all backgrounds, experiences, and identities.
If you need any adjustments during the recruitment process, please let us know. We’re here to support you
Further Information:
Due to the nature of the work and the sectors we support, any offer of employment will be subject to the successful completion of the relevant security screening and clearance process.
This role requires eligibility for [BPSS / SC / DV] clearance. As part of the vetting process, candidates must meet the UK Government’s residency and right-to-work requirements associated with the required level of clearance.