Senior AWS Platform Engineer - SC Cleared - Outside IR35

A public sector organisation is seeking a Senior AWS Platform Engineer to join via a Consultancy to join a strategic programme delivering and evolving a cloud-based occupancy data platform hosted within AWS.

The platform ingests and processes data from a range of sources including WiFi networks, IoT sensors and wider property technology systems, generating occupancy insights that support data-driven decision making across a large-scale estate.

As the Senior AWS Platform Engineer you will play a key role in the design, build and support of the cloud infrastructure, integrations and automation capabilities that underpin the platform. This is an excellent opportunity for an experienced AWS specialist who enjoys solving complex technical challenges, building cloud-native services and working across platform engineering, DevOps and systems integration.

This is an initial contract until May 2027 with potential to be extended, it is one day per week in the office in Central London with a daily rate of £610 per day Outside IR35. The successful candidate will need to already hold SC clearance and it will need to be transferred to the client.

Key Responsibilities

• Design, build and maintain AWS cloud infrastructure and platform services.
• Develop and support data ingestion and integration solutions.
• Build and maintain RESTful APIs and backend integration services.
• Develop Infrastructure as Code solutions using Terraform.
• Design and maintain CI/CD pipelines using GitHub Actions and associated tooling.
• Implement monitoring, logging and observability capabilities across the platform.
• Build event-driven and serverless services using AWS-native technologies.
• Support integration of WiFi, IoT and future occupancy data sources.
• Troubleshoot and resolve platform, deployment and integration issues.
• Collaborate with architects and engineering teams to implement target-state designs.
• Ensure solutions meet security, scalability, availability and performance requirements.
• Contribute to technical design reviews, engineering standards and continuous improvement initiatives.
• Produce and maintain high-quality technical documentation.
• Participate in Agile ceremonies including planning, estimation and sprint reviews.

Essential Skills & Experience

• Active SC Clearance.
• Significant experience designing, building and supporting AWS platforms in production environments.
• Strong Infrastructure as Code experience using Terraform.
• Experience building and supporting CI/CD pipelines, ideally with GitHub Actions.
• Strong Python development skills for automation, APIs and backend services.
• Experience developing and supporting REST APIs and integration services.
• Experience implementing event-driven and serverless solutions.
• Strong knowledge of AWS services including:
  • Lambda
  • API Gateway
  • EventBridge
  • Step Functions
• Experience integrating multiple enterprise systems and data sources.
• Experience implementing monitoring, logging and observability solutions.
• Strong knowledge of DevOps principles and modern engineering practices.
• Experience implementing cloud security controls and secure deployment processes.
• Understanding of cloud networking and secure connectivity.
• Experience working within Agile delivery environments.
• Strong troubleshooting and problem-solving skills.
• Degree in Computer Science, Software Engineering, Data Science or a related discipline (or equivalent experience).