HOME Cloud & Infrastructure Engineering Senior AWS Platform Engineer
  • CACI
  • London, Greater London
  • Full-Time
  • <48 Hours
CACI VERIFIED EMPLOYER

Senior AWS Platform Engineer.

Cloud & Infrastructure Engineering Full-Time

Senior AWS Platform Engineer: our view in 3 lines...

  • The Role:This role is for an experienced engineer who designs and builds secure cloud platforms for public sector and national infrastructure programmes.
  • The Person:The person will help shape and maintain AWS platform architectures, build Infrastructure as Code with Terraform, CloudFormation and AWS CDK, design CI/CD pipelines, and mentor other engineers.
  • Requirements:The ideal candidate has deep expertise in multi-tenanted platform architectures, multi-account AWS setups, expert knowledge of AWS Networking, TLS and security best practices, plus container orchestration with Kubernetes, EKS and observability tools Grafana and ELK, and Python, Go and Terraform.

About the role

Role: Senior Platform Engineer

Job Type: Permanent

Base Office Locations: Bromley or Kensington

Hybrid: Work from home or the Office, with some client based travel

SC - Must have or be eligible for UK Security Clearance

At IdentityE2E (a CACI Business), we're delivering secure, scalable AWS platforms that support critical public sector and national infrastructure programmes. We're looking for a Senior AWS Platform Engineer to help shape cloud architectures, influence technical direction and work alongside expert engineers on complex, high-impact projects.

Key Responsibilities

  • Actively support 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

What we're looking for:

  • Deep expertise in multi-tenanted platform architectures and multi-account AWS setups.
  • Proficiency in Python, Go, or similar languages for automation and scripting as well as Terraform
  • 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.
  • A strong understanding of security best practices

Why join?

  • 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.
  • Collaborative Problem Solving: Engage with a team of experts to tackle complex problems in highly regulated environments, where innovative solutions make a tangible impact.
  • Join a culture that celebrates pushing boundaries, where engineers are encouraged to experiment, take ownership, and grow through solving real world technical puzzles.
  • Cross-Disciplinary Collaboration: Work alongside AWS teams, partner organisations, and other engineers to create industry-defining cloud solutions.
  • 25 days holiday + bank holidays
  • L&D package, including L&D days, support with certifications & much more

Equal Opportunities:

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, sex, gender identity, veteran status, religion or belief, sexual orientation, marital status, and disability or health condition, actively working to prevent 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 020 7602 6000 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

Published November 11, 2026
Location London, United Kingdom
Job Type Full-Time