AWS API Engineer​/Data Architect

Who You Will Be Working With

You will be part of the Data Platforms team within the Insights and Data Global Practice, which has seen strong growth and continued success across a variety of projects and sectors. Data Platforms is home to API Engineers, Data Engineers, Platform Engineers, Solutions Architects and Business Analysts focused on driving our customers digital and data transformation using modern cloud platforms. We specialise in the latest frameworks, reference architectures and technologies across AWS, Azure and GCP, including API/microservices patterns and data platforms such as AWS-native analytics services and Snowflake.

To be successfully appointed to this role, the applicant must be eligible to obtain Security Check (SC) clearance. The successful applicant must have resided continuously within the United Kingdom for the last 5 years, along with fulfilling other criteria and requirements. Throughout the recruitment process, applicants will be asked about their eligibility for security clearance, including country of residence and nationality.

Some posts are restricted to UK nationals for security reasons; therefore, citizenship may be requested during the application process.

You will be an integral part of teams delivering modern digital services on AWS, with primary responsibility for API and microservices architecture and system integration. You will design RESTful APIs and service boundaries, define integration standards, and collaborate with product, delivery and cybersecurity stakeholders to ensure secure access patterns, strong observability, and smooth deployments and cutovers. Where required, you will also contribute to data architecture decisions (e.g., Postgre

SQL and document stores) to enable robust end-to-end solutions.

• Design and implement serverless and microservices-based API architectures on AWS (e.g., Lambda, API Gateway) aligned to product roadmaps.
• Define and apply RESTful API design patterns and integration standards; support API lifecycle management, documentation and versioning.
• Support system and data integration across distributed services, including event-driven patterns where appropriate.
• Assess and address technical debt, recommending pragmatic modernisation approaches.
• Support deployment planning, cutover activities and post-go-live stabilisation.
• Contribute to document store and data architecture design (e.g., Postgre
  
  SQL and document stores) and collaborate with data engineering teams.
• Collaborate with cybersecurity and delivery teams to ensure secure, observable solutions (logging, monitoring, audit).
• Integrate applications with identity providers and enforce secure access patterns (e.g., IAM, token-based authentication).

You will bring strong, hands‑on experience delivering API and integration solutions within complex environments, with an understanding of regulatory obligations and the need for trusted, mission‑critical services. You will be able to design secure, scalable and well‑governed RESTful APIs and microservices on AWS, applying consistent standards for identity, access control, observability, auditability and operational resilience. You will be comfortable collaborating with stakeholders to translate outcomes into pragmatic architectures and delivery plans, and you will bring strong engineering discipline, documentation and teamwork skills to help teams deliver sustainable capabilities end‑to‑end.

• Strong experience designing and building APIs and microservices architectures.
• Hands‑on experience with AWS serverless technologies (e.g., AWS Lambda, Amazon API Gateway).
• Solid understanding of RESTful APIs, integration patterns and distributed systems; exposure to Graph
  
  QL is a plus.
• Experience working across the full delivery lifecycle, from design through deployment and production support.
• Ability to communicate architecture decisions clearly to technical and non‑technical stakeholders.

• Minimum 5+ years of experience as an AWS API Engineer / Data Architect, designing and delivering APIs and…