Rubicon Consulting is currently recruiting for X4 Software Engineer (DV Cleared) on a 6 Month Contract, based in London.

Role Summary

We're recruiting for a specialist security team working on critical national infrastructure projects — high-impact, high-visibility work protecting UK organisations from cyber threats at scale.

This role requires DV (Developed Vetting) clearance — either currently held, or you meet the eligibility criteria (typically British citizen, 10 years continuous UK residency). Please only apply if this applies to you.

The role

You'll join a software-defined, automation-first engineering environment building and running CI/CD platforms with security embedded from day one — not bolted on afterwards. Think fast iteration, Infrastructure-as-Code as the default, and end-to-end ownership from build through to production.

What you'll be doing

• Owning and delivering platform capabilities across a highly-automated, CI/CD-driven environment
• Designing and evolving CI/CD pipelines for reliable, repeatable delivery across multiple teams
• Embedding Infrastructure-as-Code, eliminating manual provisioning and config drift
• Integrating security controls into engineering workflows — secure by design, not by afterthought
• Supporting engineering teams with tooling, guidance and best practice
• Driving adoption of modern engineering practices — CI, CD, automated testing, observability
• Contributing to technical standards and governance across teams
• Supporting incident response and continuous improvement through retrospectives

Requirements

Not every box needs ticking, but strength across most of the following:

• CI/CD platforms — GitLab, Jenkins
• Infrastructure-as-Code — Terraform, Ansible, Chef or Puppet
• Containerisation — Kubernetes, Helm
• Cloud-native platforms — AWS, Azure, GCP or VCF
• Release automation — ArgoCD, Flux
• Observability — Prometheus, Grafana, ELK
• IAM & secrets management — OAuth/OIDC, Keycloak, Vault
• Software development — Java, Python, JavaScript, C++ or C#
• Solid grounding in security principles — CIA, Least Privilege, Zero Trust
• Networking fundamentals — DNS, TCP/UDP, firewalls, VPNs

Our Company

Rubicon Consulting is a Talent management consultancy which helps you to optimise business performance and competitive advantage by choosing the right people first time!