Principal Engineer

Responsibilities:

• Lead the architecture and delivery of secure, scalable, serverless applications on AWS using TypeScript/Node.js, Python, Java, and Golang.
• Define and evolve the platform architecture, driving modernisation, performance, resilience, and maintainability.
• Design and operate distributed, event-driven systems using services like Lambda, DynamoDB, Aurora, S3, and EventBridge.
• Shape and implement AI-enabled solutions, embedding governance, observability, and responsible AI practices into the platform.
• Own Infrastructure as Code (e. g., Terraform, AWS CDK, CloudFormation) to reliably provision and manage cloud infrastructure.
• Mentor senior engineers, influence technical decisions across teams, and clearly communicate complex concepts to diverse stakeholders.

Requirements:

• Extensive experience (typically 12+ years) building secure, production-grade software systems.
• Proven track record architecting and delivering cloud-native, serverless applications on AWS.
• Strong expertise in Node.js, TypeScript, REST API design, and at least one modern front-end framework (Angular or React).
• Deep understanding of distributed systems and data stores such as Aurora, DynamoDB, and S3, including event-driven architectures.
• Hands-on experience with Infrastructure as Code tools (Terraform, AWS CDK, or CloudFormation), plus Docker and modern CI/CD.
• Strong SQL skills, including performance tuning and optimisation at scale.
• Solid understanding of AI fundamentals (model behaviour, prompt engineering,
• AI safety/governance) and experience building or integrating AI-powered systems with monitoring and compliance in mind.
• It would be great if you had these too, but we'll support you if you don't.
• Experience acting as a trusted technical advisor across multiple teams or product areas.
• Background mentoring teams through AI adoption and platform modernisation initiatives.
• A degree in Computer Science, Engineering, Mathematics, or a related field (or equivalent practical experience).