Company: La Fosse Associates
Location:
Posted: May 10th, 2026
Location: UK (Hybrid / Remote – clearance dependent)
Security Clearance: SC or DV required
Engagement:Contract (Inside IR35)
Sector: Public Sector / Defence / National Infrastructure
We are working with a secure public‑sector programme delivering mission‑critical digital services used at national scale.
They are looking for an experienced Software Engineer / Developer with strong cloud‑native engineering skills to design, build, and operate modern systems in highly regulated environments.
This is a hands‑on engineering role — you will be writing production code, working closely with infrastructure, and contributing across the full delivery lifecycle.
Please note: Due to the nature of the work, active SC or DV clearance is mandatory.
Designing and building cloud‑native applications on AWS
Developing backend services and APIs, primarily in Python
Defining and maintaining infrastructure using Terraform
Working across the full SDLC: design, build, test, deploy, and operate
Collaborating with product, platform, and security teams in agile delivery
Supporting secure, scalable, and resilient systems in production
Contributing to CI/CD pipelines and operational best practices
Working on systems that matter — national services, defence, or critical infrastructure
Active SC or DV clearance (non‑negotiable)
Strong experience as a Software Engineer / Developer
AWS (e.g. Lambda, ECS/EKS, EC2, S3, RDS, API Gateway)
Python used in production environments
Terraform (infrastructure as code)
Experience building APIs and backend services
Familiarity with CI/CD pipelines and cloud deployment
Comfortable working in secure or regulated environments
Experience with FastAPI, Flask, Django, or similar frameworks
Exposure to frontend technologies (React, Next.js, Angular)
Experience with containerisation (Docker, Kubernetes)
Background in public sector, defence, or government programmes
Understanding of DevSecOps and cloud security best practices
Experience supporting live services at scale
Work on high‑impact, nationally significant systems
Modern cloud and engineering practices
Highly skilled, clearance‑holding engineering teams
Flexible working arrangements (where clearance allows)
Competitive day rate or salary (dependent on clearance and experience)
Due to the security requirements of this role, applicants must already hold active SC, SC Enhanced or DV clearance. Unfortunately, we cannot sponsor clearance for this position.
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