Senior AWS Platform Engineer
Confirmed on the employer's own hiring board on Nov 11, 2026. First seen by Alion on Nov 11, 2026. CACI scores B on the Alion truth index.
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