Synthesia

Senior Frontend Engineer, Marketing Website

Synthesia
Apply
29 days ago
London, United KingdomSenior

Responsibilities

  • Build, scale, and evolve the marketing website’s section library using Astro components, Sanity schemas, and design tokens.
  • Own the content model and design schemas that enable safe, composable page creation by editors and AI agents.
  • Translate Figma component specifications into responsive, accessible, production-ready experiences across mobile, tablet, and desktop.
  • Extend the platform for AI-assisted development and reliable generation of on-brand website sections.
  • Own SEO integrity, including canonicals, sitemaps, structured data, redirects, and launch performance.
  • Maintain localization across nine locales and extend the translation pipeline.
  • Work end to end across frontend, server-side rendering, serverless and edge runtimes, API routes, databases, secrets, and CI.
  • Raise engineering standards through code review, reusable patterns, and targeted tests.
  • Shape the website platform’s technical direction over the next 6 to 12 months and support adoption by publishers.

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 experience owning content models in Sanity, including schema design, 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.
  • Understanding of responsive design, cross-browser compatibility, web performance, and WCAG 2.2 AA accessibility standards.
  • Experience or accountability for website performance, SEO, analytics events, and conversion metrics.
  • Strong design judgment, attention to detail, communication, collaboration, code review, and mentoring skills.
  • Preferred experience with large SaaS marketing websites, Astro or similar frameworks, Cloudflare Workers, AWS Lambda, Tailwind CSS v4, token-based design systems, AI-consumable component libraries and content models, localization at scale, and analytics or tag-management implementation.

Benefits

  • Full-time employment only, usually through OysterHR; contractor arrangements are not available.
  • Preference for in-office or remote work in London, with remote work elsewhere in Europe subject to compliance and right-to-work checks.

Tech Stack

AstroCSSHTMLTailwind CSSTypeScript

Categories

Synthesia

About Synthesia

501-1,000 employees
Contact me