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Platform Architect SC Cleared Remote / Hybrid

Sanderson Government and DefenceSouth Croydon, South East London🇬🇧United KingdomPosted 20 Oct 2026

Quick Overview

Seniority
Mid Senior
Employment type
Temporary/Casual
Work mode
Remote
Location
South Croydon, South East London, United Kingdom
Posted
2 days ago
AWSCDKCloudFormationTerraformKubernetesAgileCI/CDIAM

Job Description

Platform Architect
1 / 2 days per week onsite in London
£650 per day Inside IR35
SC Cleared

We're supporting a major digital transformation programme within central government and are looking for an experienced Platform Architect to help deliver a large-scale cloud migration and modernisation initiative.

Working as part of a high-performing consultancy team, you will play a key role in designing and implementing a new AWS-based platform, supporting the migration of a substantial product estate whilst helping shape the next generation of cloud-native platform capabilities.

This is a highly influential position where you'll define the core platform architecture, establish engineering standards, and enable development teams through scalable, secure, and automated cloud services.

Responsibilities

  • Architect and deliver secure, scalable AWS platform foundations.
  • Design and implement AWS landing zones, governance frameworks and security guardrails.
  • Define 'golden paths' and self-service capabilities that accelerate software delivery.
  • Develop platform standards and reusable infrastructure patterns.
  • Support the migration of applications and services into a modern AWS environment.
  • Collaborate with engineering, security, architecture and delivery teams across the programme.
  • Contribute to the development of new platform tooling, CI/CD capabilities and cloud automation services.
  • Ensure platform solutions align with government security, resilience and operational requirements.

Key Skills & Experience

AWS Platform Architecture

  • Extensive experience designing and delivering enterprise-scale AWS platforms.
  • Strong understanding of multi-account strategies and cloud operating models.

Governance & Security

  • Experience designing secure landing zones and governance frameworks using:
    • AWS Organizations
    • AWS Control Tower
    • IAM
    • Service Control Policies (SCPs)

Infrastructure as Code (IaC)

  • Strong hands-on experience designing and implementing Infrastructure as Code using:
    • Terraform
    • AWS CDK
    • CloudFormation

Container & Serverless Technologies

  • Experience building and managing cloud-nativeruntime environments including:
    • Amazon EKS (Kubernetes)
    • ECS
    • Fargate
    • AWS Lambda

Desirable Experience

  • Large-scale cloud migration or transformation programmes.
  • Platform engineering and developer experience initiatives.
  • CI/CD pipeline design and automation.
  • Working within complex, regulated or government environments.
  • Agile delivery methodologies.

To learn more, please do reach out to Tom Royston via email on

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

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