Senior AWS Platform Engineer

CACI Ltd; London; Hybrid; GBP 60,000 - 100,000; Full time

Job summary

CACI Ltd is seeking a Senior AWS Platform Engineer to lead architecture decisions in a dynamic, largely remote environment. This role offers an opportunity to work on cutting-edge solutions for complex, national infrastructure, with a focus on innovation, security, and scalability. Join a team that values collaboration and technical excellence while enjoying competitive benefits including holidays and training allowances.

Benefits

25 days holiday + bank holidays

Up to 5% employer pension contribution

Educational allowance, training programs, certifications

Flexible Working Arrangements

Qualifications

• Minimum of 5+ years of hands-on experience designing and managing AWS cloud infrastructure.
• Deep expertise in multi-tenanted platform architectures and multi-account AWS setups.
• Proficiency in Python, Go, or similar languages for automation and scripting.

Responsibilities

• Lead the architecture and evolution of AWS platforms at scale.
• Develop and maintain Infrastructure as Code solutions using Terraform and CloudFormation.
• Champion security and compliance by integrating services like AWS Security Hub.

Skills

AWS platform architectures

Infrastructure as Code

Python

Go

AWS Networking

Container orchestration

Terraform

Kubernetes

Job description

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This range is provided by CACI Ltd. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Job Title: Senior AWS Platform Engineer

Location: Bromley/Croydon (Largely Remote Working)

For this role you must have or at least be eligible for UK security clearance. To be eligible you must have been living in the UK for a minimum of the last 5 years and hold a British Passport.

Job Summary:

At IdentityE2E (a CACI business), 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 an experienced 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.

Key Responsibilities

• Lead the architecture and evolution of AWS platforms at scale, leveraging AWS Organizations, 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.

Skills, Knowledge and Expertise

Minimum of 5+ years of hands-on experience designing and managing AWS cloud infrastructure.

• Deep expertise in multi-tenanted platform architectures and multi-account AWS setups.
• 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.

Why Work For Us?

• 25 days holiday + bank holidays
• Up to 5% employer pension contribution
• Educational allowance, training programmes, certifications, conference attendance, and other activities to help employees stay current with new technologies and industry trends.
• Flexible Working Arrangements

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Consulting and Information Technology

• Industries

  Information Technology & Services and IT Services and IT Consulting

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