Frontend Engineer

We’re looking for a Frontend Engineer to take a senior role in building and evolving the web application that powers Synap’s assessment platform. You’ll work as part of our frontend engineering team, as well as working with backend engineers, our CTO and the product team to deliver features that are performant, elegant, and reliable; ensuring a best-in-class user experience for exam administrators and candidates alike. You’ll contribute to architectural decisions, mentor other engineers, and champion engineering best practices.

Key Responsibilities

• Design, develop, and maintain our core Ember.js + TypeScript web application.
• Contribute to architecture and long-term maintainability.
• Translate product and UX designs into high-quality, production-ready code.
• Design and build UIs from low fidelity mockups.
• Design and build UIs for reusable components.
• Collaborate closely with backend engineers to design and integrate with OpenAPI-based REST APIs.
• Drive performance optimisation, accessibility (WCAG 2.1, target level AA), and cross-browser reliability for a high-stakes product.
• Lead and participate in code reviews; define and evolve frontend architecture and patterns; mentor junior engineers.
• Ensure robust testing, CI/CD integration, and maintainability through strong coding standards and automated pipelines.
• Improve developer experience: tooling, local dev flows, CI speed, linting, and documentation.
• Participate in operational responsibilities for a high-reliability platform, including incident response and a supporting rota to triage bugs when required; ensure secure handling of candidate and customer data.

• 5+ years of professional frontend development experience.
• Strong proficiency in TypeScript and modern JavaScript (ES6+).
• Hands-on experience with opinionated frameworks.
• Excellent understanding of responsive design, utility classes, and component-based UI development.
• Proven experience integrating with REST APIs.
• Solid knowledge of frontend testing methodologies and tooling.
• Strong attention to performance, accessibility, and code quality.
• Experience working in a CI/CD environment with agile release cycles.
• Excellent written communication skills, with the ability to convey complex information clearly and concisely.
• Proactive approach to solving complex problems.

• Experience with Ember.js.
• Experience building accessible applications (WCAG 2.1).