QA Test Infrastructure Engineer

Job Description

QA Test Infrastructure Engineer - Chelmsford Onsite - Outside IR35 - Highest Security Clearance

As a QA Test Infrastructure Engineer youll help design build and deliver secure digital solutions in highly secure environments. Youll work alongside engineers architects and delivery specialists to develop technology that enables faster safer decision-making for critical operations.

Role includes:

• Ensuring quality of products as they move from prototype/proof of concept into Production.
• Analyse infrastructure requirements and architectures; identify test conditions; maintain traceability; log risks.
• Create infrastructure-focused test strategies and plans defining scope environments tooling automation and governance entry/exit criteria.
• Provision and validate test environments in collaboration with DevSecOps ensuring OS network platform services monitoring and pipelines align to readiness standards.
• Design and execute tests across physical infrastructure and IaC including functional integration regression resilience non-functional and security-related scenarios.
• Apply Secure-by-Design principles; support security testing; contribute to accreditation assurance and compliance documentation.

Key Responsibilites Required

Infrastructure Networking & Operating Systems:

• Strong understanding of TCP/IP DNS DHCP routing switching firewalls VLANs and related network behaviours.
• Experience with physical infrastructure setup and troubleshooting (routers switches cabling).
• Proficiency with Linux/Unix command line for diagnostics configuration and validation.
• Experience working across virtualisation platforms (VMware VirtualBox) and cloud environments (AWS Azure GCP).

Infrastructure as Code (IaC)

• Terraform: writing/validating HCL managing state using modules.
• Ansible: building playbooks/roles inventories and validating idempotency.
• Kubernetes: deploying workloads validating manifests managing clusters and testing containerised applications.

CI/CD & Automation

• Familiarity with CI/CD tooling (Jenkins GitLab CI GitHub Actions).
• Experience integrating IaC validation and environment checks into automated pipelines.
• Understanding of pipeline gating automated readiness checks and environment orchestration.

Security & Compliance

• Strong grounding in Secure-by-Design principles IAM least privilege OS hardening network segmentation and observability.
• Experience within regulated or highly governed environments (eg MOD or similar).
• Ability to support compliance assurance and accreditation activity.

Due to the nature of the organisation applicants are required to hold the Highest Level of Security Clearance.

QA Test Infrastructure Engineer - Cheltenham Onsite - Outside IR35 - Highest Security Clearance