Senior Devops Engineer

We operate in some of the most complex and high-stakes environments in the world defence - national security, AI and robotics. The decisions we make now will define not just how fast we grow, but who we become.

You will work closely with the whole team. You will be trusted with judgment calls. You will influence the business. And you will see the impact of your work every day.

If you are excited by ownership, pace and purpose, and by building something that genuinely matters - we would love to hear from you., Your responsibilities will include, but not limited to:

· End-to-end cloud ownership - architect, implement and maintain multi-account, multi-region environments using IaC (Terraform, Helm).

· Platform reliability & automation - manage Kubernetes clusters (EKS/OpenShift), container registries and service meshes; create GitHub Actions / Argo CD pipelines for zero-touch deployments.

· Security hardening - lead security-posture reviews, implement GuardDuty, CloudWatch and IAM best practices.

· SRE & monitoring - uphold SLAs through observability stacks, proactive alerting and performance tuning of distributed systems.

· Collaboration & enablement - automate repetitive tasks, mentor developers and champion DevSecOps best practice across teams.

· Policy & audit ownership - steward the regular audits we need to put in place to remain compliant with industry standards ensuring provenance.

· Backup & DR - design AWS Backup plans, run annual restore drills, maintain RPO/RTO dashboards.

· Capacity & cost optimisation - run the monthly Capacity & Availability Checklist; leverage Compute Optimizer, Savings Plans and Graviton

· Drift detection - operate Terraform/Helm drift alerts, AMI & container image pipelines with Inspector v2 scanning.

· Incident & hot-fix response - coordinate emergency changes, rollbacks and post-incident reviews

We are looking for a seasoned DevOps professional with deep hands-on expertise in AWS, Kubernetes and modern CI/CD who can also drive cloud-native security. You will design, build and audit scalable infrastructure, automate delivery pipelines and champion cost-efficient, highly available platforms while owning key processes that will help OD remain compliant with our various certifications also, A collaborative and supportive attitude to work is essential for this role. You will be expected to operate at multiple levels within the company, with a strong focus on delivery and attention to detail. You will be comfortable working alone, supporting team members as well as interacting with clients if required

Qualifications, experience and skills

· Proven experience in DevOps / SRE, with recent focus on AWS cloud engineering.

· Expert in AWS core services (EC2, VPC, IAM, S3, ALB/ELB, CloudFront, ECR/ECS, Control Tower) and security tooling (GuardDuty, IAM Identity Center, CloudWatch.

· Strong Kubernetes (EKS/OpenShift) administration, Helm packaging and service-mesh know-how.

· Strong on-prem Kubernetes setup and administration

· Solid Nexus experience

· Proficient in IaC (Terraform, Terraform Cloud, CloudFormation), containerisation (Docker, Docker Compose) and Linux systems.

· Solid CI/CD engineering with GitHub Actions and Argo CD.

· Experience integrating SAST and DAST best practices.

· Scripting in Bash and Python or Go for automation

· Demonstrated success delivering cloud cost-optimisation and high-security solutions for enterprise clients

· Expertise in implementing SSO across a variety of industry standard software

Preferred / Bonus

· Experience with MLOps/LLMOps (Softwares such as Sagemaker, Kubeflow or ZenML)

· Deployment of on-premise Kubernetes

· Prometheus (or other stacks) observability

· Experience with AWS Karpenter & Compute Optimizer

· Compliance literacy - ISO 27001, NIST SSDF/OWASP SAMM, GDPR basics

Why Oxford Dynamics?

Join the most exciting growth area in the UK: AI and robotics. Every member of the Oxford Dynamics team has a major impact on the products and services we provide. Regardless of job title, you will get to make a real difference and learn from colleagues across every area of our business.

Benefits include:

• Genuine scope and a clear path into design leadership

• Flexible and hybrid working pattern

• Company pension (NEST) with 4% employer contribution

• Private healthcare

• Generous 29 days holiday plus public holidays

Oxford Dynamics is committed to creating an inclusive team experience for all. Regardless of race, gender, religion, sexual orientation, age, disability, or parental status, we believe our work is at its best when everyone feels free to be their authentic self.

Founded in 2019, Oxford Dynamics is a fast-growing UK frontier technology company developing both digital and physical AI systems built to operate in dynamic, mission-critical environments.

At the core of everything we build is AVIS (A Very Intelligent System), our orchestration platform: the intelligence layer that fuses multi-modal data, including text, imagery, telemetry and sensor feeds, so operators can interrogate complex information at speed and make better decisions under pressure. AVIS powers our digital decision products, such as ORION for multi-source decision-to-effect, and it powers our physical platforms, including STRIDER for CBRN operations and BARBARIAN for explosive ordnance disposal. The same brain reasons across the screen and the machine.

We work where wrong decisions can be catastrophic, partnering with defence and security organisations internationally to help protect nations, infrastructure and lives