Principal DevSecOps Engineer - LONDON

83zero Ltd; Greater London; Hybrid; GBP 110,000 - 125,000; Full time

Benefits offered by this job

Pension

Hybrid working

Learning & development opportunities

Job summary

83zero Ltd. seeks a Principal DevSecOps Engineer for a permanent role in London with a hybrid pattern (3 days on-site).

You will lead the adoption and continuous improvement of DevSecOps across complex programmes, blending hands-on engineering with technical leadership to embed security, automation and reliability. Responsibilities include designing secure CI/CD pipelines, IaC governance, vulnerability management and incident support, while shaping DevSecOps practices across teams and ensuring

Qualifications

• Hands-on DevSecOps with leadership experience across secure CI/CD and GitOps pipelines.
• Experience embedding security, automated vulnerability management and secrets handling in delivery workflows.
• Proven ability to establish secure-by-design practices and enforce security standards.

Responsibilities

• Design and continuously improve secure, automated CI/CD and GitOps pipelines.
• Embed security scanning, vulnerability management and secrets management into delivery workflows.
• Establish secure‑by‑design engineering practices and enforce security and technical standards.
• Lead IaC practices across teams and environments.
• Drive observability, monitoring, logging and audit controls.
• Support incident response, patching, compliance reporting and technical debt remediation.
• Partner with developers and delivery teams to improve engineering quality and security.
• Document security processes, controls and runbooks.
• Provide technical leadership and help establish DevSecOps ways of working.

Skills

CI/CD

GitOps

Security engineering

Automation

Python

Bash

Tools

Terraform

Trivy

HashiCorp Vault

Docker

AWS EKS

S3

cert-manager

Job description

Principal DevSecOps Engineer - Permanent

London | Hybrid - 3 days per week on site

£110,000-£125,000 + 5-10% bonus + pension + benefits | Permanent

Build secure, scalable platforms that enable transformation

We are looking for a Principal DevSecOps Engineer to lead the adoption and continuous improvement of DevSecOps practices across complex technology transformation programmes.

You’ll combine hands‑on engineering with technical leadership, embedding security, automation, governance and reliability throughout the path to live.

What you’ll do

• Design and continuously improve secure, automated CI/CD and GitOps pipelines
• Embed security scanning, vulnerability management and secrets management into delivery workflows
• Establish secure‑by‑design engineering practices and enforce security and technical standards
• Lead Infrastructure as Code (IaC) practices across teams and environments
• Drive observability, monitoring, logging and audit controls
• Support incident response, patching, compliance reporting and technical debt remediation
• Partner with developers and delivery teams to improve engineering quality and security
• Document security processes, controls and operational runbooks
• Provide technical leadership and help establish effective DevSecOps ways of working

What we’re looking for

You’ll be an experienced DevSecOps Lead or Principal Engineer with strong hands‑on engineering and technical leadership experience across:

• CI/CD & GitOps: GitHub Actions, Argo CD, Argo Rollouts
• Security & Compliance: Trivy, vulnerability management, HashiCorp Vault, cert‑manager
• Containers & Cloud: Docker, AWS EKS, AWS IAM, S3 and network policies
• Infrastructure as Code: Terraform
• Observability: Grafana, Loki
• Automation: Python and Bash
• Experience delivering within the UK Government Digital Service (GDS) lifecycle on a public sector engagement

Why join?

You’ll work on complex, high‑impact transformation programmes where engineering, security and technology come together.

You’ll have access to extensive learning and development opportunities, professional certifications and flexible hybrid working, with the opportunity to shape DevSecOps practices across a growing technology environment.

Security Clearance

Security Check (SC) clearance is required. Candidates must meet the relevant eligibility requirements, including continuous UK residency for the last five years.

This role requires candidates to be sole UK nationals.

Ready to shape the future of secure engineering?

If you’re a senior DevSecOps professional who enjoys solving complex technical challenges, leading from the front and building secure engineering practices that scale, we’d love to hear from you.