9 hours ago
Remote, United Kingdom or London, United KingdomSenior
Responsibilities
- Build, scale, and maintain the Astro component and section library, Sanity schemas, and design-token system for the marketing website.
- Own the content model, including schema design, references, embedded objects, runtime variants, GROQ, and Portable Text.
- Translate Figma component specifications into responsive, accessible HTML, CSS, and TypeScript components for mobile, tablet, and desktop.
- Extend the website platform for AI-assisted development so coding agents can generate on-brand sections from design specifications.
- Maintain SEO integrity through canonicals, sitemaps, structured data, redirects, and launch monitoring.
- Set engineering standards through code reviews, reusable patterns, and targeted tests.
- Maintain localization across nine locales and extend the translation pipeline.
- Shape the technical direction of the website platform over the next 6 to 12 months and champion adoption among content publishers.
- Own end-to-end features across schema, components, routes, server-side systems, and production debugging.
- Measure and improve website performance, SEO, analytics events, conversion, and accessibility.
Requirements
- At least five years of software engineering experience, including three years at senior level, building frontend systems for content-driven or marketing platforms.
- Hands-on ownership of Sanity content models and schemas, with familiarity with GROQ and Portable Text.
- Expertise in HTML, CSS, and TypeScript, including component API design and shared-library developer experience.
- Ability to work across frontend and server-side systems, including SSR, serverless and edge runtimes, API routes, SQL databases, secrets, and CI.
- Strong understanding of responsive design, cross-browser compatibility, web performance, and WCAG 2.2 AA accessibility.
- Experience with marketing-site measurement, SEO, analytics events, conversion, and performance metrics.
- Strong design judgment, attention to detail, communication, collaboration, code review, and mentoring skills.
- Experience with a large SaaS marketing website at significant traffic is preferred.
- Experience with Astro or another islands or static-site framework is preferred.
- Experience with Cloudflare Workers, another edge or serverless platform, or AWS Lambda is preferred.
- Experience with Tailwind CSS v4 and token-based design systems is preferred.
- Experience building component libraries and content models consumable by AI agents is preferred.
- Experience with localization and internationalization at scale is preferred.
- Experience implementing analytics and tag management, including dataLayer events, server-side tagging, and attribution is preferred.
Benefits
- Preferred hybrid work from the London, UK office.
- Remote work may be available elsewhere in Europe, subject to compliance and right-to-work checks.
Tech Stack
Categories
About Synthesia
Synthesia builds an AI video creation platform that lets businesses generate videos from text using avatars, voiceovers, and templates, with enterprise controls for scale and compliance. It operates a cloud-based subscription model serving training, internal communications, and marketing teams. Founded in 2017 and headquartered in London, the privately held company reports widespread adoption across the Fortune 100.