Frontend Engineer

• 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.

Do you have experience in UI development?, Essential:

• 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.

Bonus:

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

Why Synap

• Be part of a talented engineering team building software used by top-tier universities and major global brands.
• Work on a product that genuinely impacts education and assessment at scale.
• Modern development workflow: TypeScript, Ember.js, REST APIs, automated testing, and CI/CD pipelines.
• Competitive compensation and benefits, including a workplace pension scheme, and a generous holiday allowance with an additional birthday day off.
• A collaborative, supportive environment where your input matters, and where you can make a visible impact.

Interview Process

After you apply, our hiring team reviews your CV and a short statement describing a piece of work you're proud of. If you progress, we'll ask you to complete a technical exercise designed to mirror the kinds of problems we solve at Synap. Next, you'll walk through your submission on a video call with members of the engineering team to discuss your approach and trade-offs. The final step is a brief 15-minute conversation with Synap's founders before an offer is made.

Job Types: Full-time, Permanent

Pay: £45,000.00-£60,000.00 per year

Synap is an award-winning assessment platform, trusted by leading universities and globally recognised organisations to deliver secure, scalable, and high-stakes online exams. We're helping some of the world's most prestigious institutions, including Ivy League universities and household-name brands, deliver seamless digital assessment experiences for learners across the world. Our mission is simple: to make high-quality online exams effortless, reliable, and accessible.