Lead Infrastructure Engineer
Employer: Companies House
Location: The team for this role is based in our Cardiff office, and a hybrid employment contract will be provided as the standard offering. However, remote contracts may be considered as an exception whereby commuting to the office location of your team is not reasonably practicable.
Working hours: Full-time
Salary: £53,540 - £68,250
Closing date: 11th January 2026
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The position will be focussed on building and maintaining Infrastructure to enable the organisation to deliver rapidly and reliably deploy and innovate for our customers. A Lead Infrastructure Engineer will work our development teams, ensuring work is delivered to the standards set out in our best practice guides. The role requires the candidate to lead on various streams of work and provide technical support to Infrastructure engineers across the organisation.
As a Lead Infrastructure Engineer, the candidate must perform at the level defined within the DDaT Capability Framework.
You may be required to undertake line management responsibilities in this position: this will be discussed with the successful candidate. Previous management experience is desired but not essential as training can be provided.
Responsibilities
You will be responsible for delivering the infrastructure and tooling to support a continuous delivery approach within Companies House. You will be user and service focused ensuring that value is delivered through improvement and automation of platform services. Working in a team of infrastructure specialists and engineers, a Lead Infrastructure Engineer builds, administers, supports, and maintains solutions as directed and according to departmental policy. Most of the time will be spent working with the delivery teams on carrying out the infrastructure work on development projects. This will include answering any queries regarding environment, configuration, and CI/CD processes.
At this role level, you will:
Ensure services are integrated, delivered, and operated as required.
Work with technical architects to translate architectural designs into operations.
Design and develop infrastructure as code, source code repositories, and Continuous Integration/Continuous Delivery pipelines to execute change on Cloud environments.
Lead and support colleagues in non-functional requirements, ensuring availability, security, capacity, and performance for the platform and/or service.
Transform technical requirements into an effective DevOps toolchain to enable product delivery.
Ensure that deployment strategies for products are repeatable, scalable, and universally available.
Have deep technical knowledge, providing support to delivery teams and solving complex problems.
Ensuring best practice guides are maintained and adhered to.
Ensure that integration is controlled, maintained and managed through Iaas, PaaS and SaaS cloud solutions.
Work with stakeholders to deliver and configure solutions via multiple cloud estate providers.
Lead on technical workstreams, ensuring delivery aligns with organisational goals and best practices.
Carry out horizon scanning and impact assessments to identify emerging trends and technologies, evaluating their potential influence on our services.
You can read more about a career in Digital and Data within the Civil Service in the Government Digital and Data Candidate Information Pack.
Person specification
We are looking for the following experience, which will be assessed at sift and at interview.
Expert knowledge in:
Terraform and Cloud technologies (preferably AWS)
CI/CD tools (e.g., Concourse)
GitHub (source control and versioning)
Strong practical experience in:
Containerisation (Docker)
Unix/Linux
Working knowledge of:
Ansible
Packer
Specialist skills:
Candidates who are invited to the Technical Assessment Stage, will be asked to demonstrate their awareness of at least one of the specialist skills listed below. Please note that all specialist skills are considered equally; no preference or additional weighting is applied to any skill.
DevOps: Programming languages such as Java, NodeJS, and Python
DevSecOps: Cloud security principles and disaster recovery (e.g., AWS Control Tower, IAM solutions, encryption, MFA, governance and compliance [ISO 27017], DRaaS)
Testing Infrastructure: Testing principles and frameworks (e.g., Selenium/Java, Playwright/TypeScript, BrowserStack, Karate DSL)
Behaviours
We'll assess you against these behaviours during the selection process:
Delivering at Pace
Leadership
Making Effective Decisions
Technical skills
We'll assess you against these technical skills during the selection process:
Terraform & Cloud Provider Technology Understanding
Containerisation (Docker)
Continuous Integration / Continuous Delivery Tooling and Principles
Specialist skills (please refer to the Specialise Skills section above for more details)
Benefits
Alongside your salary of £53,540, Companies House contributes £15,510 towards you being a member of the Civil Service Defined Benefit Pension scheme. Find out what benefits a Civil Service Pension provides.
We believe that our success is driven by the well-being and satisfaction of our team members at all levels of the organisation. At Companies House we’re committed to providing a comprehensive benefits package that goes beyond the ordinary, ensuring your career journey with us is not only fulfilling, but also rewarding. We pride ourselves on offering a quality work-life balance with our employee wellbeing being central to our working practices.
Head to Our benefits - Working for us - Recruitment (companieshouse.gov.uk) to find out more about the fantastic benefits package we have at Companies House.
We celebrate diversity...
As an equal opportunity employer, we celebrate diversity, being committed to ensuring we’re representative of the citizens we serve and creating an inclusive environment. Everyone in Companies House brings something different, and so will you. To fulfil our commitment to recruiting and attracting diverse talent we welcome applications from underrepresented groups. We also welcome applications from Welsh speakers.
We are proud to be a disability confident leader. Our recruitment process is fully inclusive and we can make adjustments as needed through our process. These could include having an interview buddy, extra time at interviews/assessments and receiving interview questions in advance, to name a few.
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