Senior Frontend Engineer; Typescript

The Role

We're looking for an experienced Senior Software Engineer (Frontend) to lead the development of Engine Designer — the interface through which our customers harness the Uncertainty Engine to tackle some of society's hardest problems. In this role, you'll use React and Type Script to design and build the user‑centric interfaces that make trustworthy AI usable.

This is a hands‑on technical role that combines deep frontend expertise with a collaborative, product‑minded approach.

• Collaborating with a cross‑functional team to develop and maintain high‑quality frontend software solutions.
• Contributing to the architectural design, development, testing, and deployment of frontend applications.
• Developing applications with React and Type Script, ensuring a high‑quality, scalable, and secure codebase.
• Applying security best practices throughout the software development lifecycle.
• Mentoring and guiding junior engineers, fostering a collaborative and learning‑oriented environment.
• Demonstrating a deep understanding of React and Type Script, and ability to communicate technical expertise.
• Solid understanding of CI/CD pipelines and ensuring efficient deployment processes for frontend code.
• Championing “Scrum” and making strong contributions to team‑process improvements.
• Collaborating with product management to understand and translate business requirements into technical frontend solutions.
• Providing technical support to internal customer‑facing engineers and leading diagnosis and mitigation in incident management investigations.

Duties may evolve, and you may be asked to take on other reasonable responsibilities within your competence to support our growth.

• Degree‑level qualification in computer science or related field.
• Sufficient industry experience in software development.
• Expertise in React, and React’s functional component paradigm, hooks, and custom hook patterns.
• Strong proficiency with Type Script.
• Expertise in CSS, and experience with a variety of modern CSS approaches.
• Ability to write logical, self‑explanatory, and consistent code.
• Experience with user‑account management and secure frontend development.
• Professional experience with RESTful API design and best practices.
• Strong understanding of frontend software design patterns, SOLID, DRY principles, and architectural patterns.
• Experience with Git/Git Hub and best practices.
• Familiarity with CI/CD pipelines and deployment automation.
• Knowledge of the software testing pyramid and automated testing (smoke, component, unit, performance, load, end‑to‑end).
• Understanding of UI/UX design principles and a keen eye for detail.
• Proven ability to collaborate in a fast‑paced “Agile” team, preferably using “Scrum.”
• Excellent communication and interpersonal skills.
• Proven ability to lead and mentor junior engineers.

• A Master’s degree in a related field.
• Experience with AWS: IAM, Lambda, S3, Cloud Watch, Cloud Formation, API Gateway, ECR, EC2, Cognito.
• Experience with canvas/diagram libraries (like React Flow, Flow Chart.js, etc.).
• Experience with popular state management libraries, for client and server state.
• Knowledge of deployment‑reliability engineering and reliability best practices.
• Experience with security best practices and frontend security concerns.

This role is on‑site at our Exeter or Bristol office.

• Competitive Salary
• Personal & professional development
• BUPA private health care (via salary sacrifice)
• Company Cashplan
• Cycle to work scheme
• Referral Program
• Regular social events such as pizza nights, kayaking, bouldering and bake offs

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Lab is an equal‑opportunity employer. We welcome applications from candidates of all backgrounds and are committed to ensuring our recruitment processes are fair, inclusive, and legally compliant. We take equality, dignity, and non‑discrimination seriously.