DV Application Support Engineer - Contract (outside of IR35)
Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on May 31, 2024. TwinStream scores B on the Alion truth index.
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 :
Employment: Contract (outside of IR35)
Rate: £500 - £600
Security Level: Must have live DV clearance
Location: 5 days in either Cheltenham
About the role
As part of our on-site team,you'llplay a key role in designing, building, configuring, and maintainingresilient systems that support critical operations. You’llwork closely with cross-functional teams to ensure our platforms are scalable, secure, and reliable, and directly with our intelligence community customers to deliver their mission. This involves analysingtheir requirements and configuring the cross-domain platform accordingly; and, with the rest of the team, resolving any issues and refining the setup together.
This is a hands-on role where you’llhave the opportunity to influence technical direction, improve system performance, and contribute directly to meaningful projects.
Responsibilities
We recognise that no one ticks every box. If your experience aligns with most of the below, we’dlove to hear from you:
- Designing and maintainingreliable, scalable physical and virtual infrastructure
- Monitoring system performance and proactively resolving issues
- Automating processes using tools such as Ansible to improve efficiency and consistency
- Collaborating with engineers and stakeholders across the business
- Supporting continuous improvement of systems, tools, and practices
- Operating across the full infrastructure stack, from bare metal systems throughtovirtualiseddeployments and the applications running within them.
- Understanding customers’ use cases, advising on the best components of the software system to use
- Managing the lifecycle of customer integrations, retiring integrations when no longer required
- Technical consultancy with customers on how to integrate with the system via REST APIs, SFTP, Web-hooks, etc
- Second and third-line support, responding directly to business issues and questions.
- Root cause analysis and proactive problem solving. The team is empowered to deploy changes in response to arising requirements.
Key Skills
- Candidate must have a live eDV clearance
- A collaborative mindset and eager to learn
- Communicating with technical and business stakeholders
- Understanding of networking and software architectures
- Understanding of structured text formats: JSON, XML, CSV
- Understanding of synchronous and asynchronous architectures
- Critical thinker with the ability to reason about problems, test hypotheses, and make appropriate riskdecisions.
Desirable Skills
- Exposure to programming languages such as Java, JavaScript, Python, and Go
- Familiarity with API definitions: Swagger / Open API 3
- Familiarisation with shell scripting
- Familiarisation with AWS or other cloud platforms’ administration
- Experience in Site Reliability Engineering, DevOps, or similar roles
- Experience with infrastructure as code and configuration management tools (e.g. Terraform, Ansible)
- Familiarity with CI/CD pipelines and automation practices
- Understanding of monitoring, logging, and alerting systems
- Experience with Kubernetes - cloud or on-prem
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.