Principal Engineer

Principal Engineer | Hybrid | React | Node | AWS | TypeScript | £120k La Fosse has partnered with a global leader in customer loyalty and travel services. We're looking for Principal Engineers with a strong background in full-stack JavaScript development to join their growing team. As a Principal Engineer, you'll be leading the technical direction of a greenfield project, building and designing the system from ground up. You'll be responsible for: Shaping technical roadmaps Driving architectural decisions Solving complex engineering challenges Defining technology strategies and making informed tech choices Observability & Performance Infrastructure & Deployment AI & Future Tech Your mission: Build greenfield systems from the ground up, with opportunities to explore AI, automation, and industry-leading engineering practices. What They're Looking For 7 years of technical experience with the Full Stack JavaScript ecosystem A track record of success in mentoring, technical leadership, and stakeholder engagement Experience leading the design, development, and operation of innovative software solutions Strong skills in modern web development (React.js, Node.js, AWS, TypeScript) and a solid understanding of web architecture Proficiency in building and managing APIs (GraphQL & RESTful) and strong database fundamentals (MongoDB) In-depth knowledge of AWS services (e.g. Lambda, Aurora RDS, EC2, ECS, SQS) Familiarity with CI/CD, DevOps practices, and common design patterns Bonus: AWS certifications Benefits Private healthcare EV company car scheme Staff discounts Comprehensive pension plan Location: Hybrid (Central London office - team meets twice weekly) Interview Process: Streamlined two-stage virtual interview If this sounds like the next step in your engineering journey, we'd love to hear from you. Apply now! Principal Engineer | Hybrid | React | Node | AWS | TypeScript | £120k