Principal Engineer (London Area)

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