Senior Platform Engineer

Posted Thursday 29 January 2026 at 01:00 Expires Saturday 28 February 2026 at 00:59

Location: London/Work from home

Due to the industries we work in, we require the successful candidate to be able to obtain high level security clearance. To qualify for this, you must be a British citizen only and have lived permanently in the UK for the last 5 years.

At IdentityE2E, we're redefining what's possible in AWS platform engineering. As the first UK company to achieve AWS Vetted Partner Program (VPP) status for National Security and Defence, we design cutting-edge solutions for complex, highly regulated environments at large scale. Our Jezero Secure Landing Zone Accelerator and Cydonia biometric cloud solutions set industry benchmarks for scalability, security, and innovation.

We're looking for a top level hands on AWS Platform Engineer who's ready to lead architecture decisions, experiment boldly, and push boundaries in delivering secure, scalable, and dynamic cloud platforms. You'll collaborate with expert level engineers, have opportunities to work in collaboration with AWS, and to influence the next generation of cloud services while working on critical national infrastructure and large-scale projects.

• Lead the architecture and evolution of AWS platforms at scale, leveraging AWS Organisations, Landing Zones, and multi-account best practices.
• Develop and maintain Infrastructure as Code solutions using Terraform, CloudFormation, and AWS CDK.
• Champion security, compliance, and observability by integrating services like AWS Security Hub, GuardDuty, and Inspector.
• Design CI/CD pipelines to enable seamless deployments and self-service models for customers.
• Innovate with AWS Networking, KMS, IAM, and container orchestration (Kubernetes, ECS).
• Mentor and collaborate with a team of talented engineers, fostering a culture of technical excellence.

• Deep expertise in multi-tenanted platform architectures and multi-account AWS setups.
• Experience with Landing Zones/Control Tower
• Proficiency in Python, Go, or similar languages for automation and scripting.
• Expert-level knowledge of AWS Networking, TLS, and security best practices.
• Experience with container orchestration (Kubernetes, EKS) and observability tools (Grafana, ELK).
• A passion for innovation, problem-solving, and delivering high-impact solutions.

• Work on AWS Landing Zone Accelerator (LZA) solutions at massive scale and play a key role in shaping best practices, standards and the architecture.
• Work on large-scale, cutting-edge AWS architectures that push the limits of scalability, security, and innovation, ensuring every day presents a new technical challenge.
• Engage with a team of experts to tackle complex problems in highly regulated environments, where innovative solutions make a tangible impact.
• Up to 5% employer matched pension contribution
• Work alongside AWS teams, partner organisations, and other engineers to create industry-defining cloud solutions.
• 25 days annual leave + bank holidays

CACI is proud to be an equal opportunities employer. Embracing the diversity of our people, we are on a journey to build a truly inclusive work environment where no one is treated less favourably due to ethnic origin, age, gender, veteran status, religion or belief, sexual orientation, marital status, and disability or health condition, actively working to pre vent discrimination.

As a Disability Confident employer, we will;

• Provide reasonable adjustments in the recruitment process where requested (contact a member of the recruitment team on to discuss individual requirements further).
• Offer people with health conditions and disabilities, meeting the minimum criteria for a role, an interview.

Our people are unique and we encourage, and support them, to be confident in contributing to our inclusion journey.