Frontend Developer

CompanySynthesia

LocationUnited Kingdom

Posted At3/4/2026

UK Visa Sponsorship Analytics

Occupation Type

Programmers and software development professionals

Occupation Code Skill LevelHigher Skilled

Sponsorship Salary Threshold

£54,700 (£28.05 per hour)

Occupation rate applies

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Description

Senior / Lead Software Engineer (Frontend Mastery) | Synthesia

Synthesia is the global leader in Generative AI video, powering the communication strategies of over 50,000 customers, including 50% of the Fortune 500. Since 2017, we have pioneered in-house AI technology that is now the industry standard. We are seeking a high-caliber Senior or Lead Engineer with deep frontend expertise to spearhead the next evolution of our product interface.

Your Impact & Strategic Ownership

End-to-End Execution: Take charge of the full feature lifecycle, from our React client to the Python backend, ensuring every release is secure, high-performance, and impactful.
Complex UI Design: Architect sophisticated user interactions and responsive interfaces that make high-end AI video tools feel seamless and intuitive.
Technical Roadmap Leadership: Manage multi-month initiatives by translating high-level product visions into concrete, iterative technical milestones.
Product Strategy Partnership: Work as a peer to Product Managers. You are expected to provide the technical perspective that shapes the commercial success of our features.

Data-Informed Iteration: Leverage our robust data pipelines to analyze feature performance against business goals, allowing for rapid pivots based on real-world usage.

Engineering Foresight: Anticipate technical challenges 6–12 months in advance, building the core capabilities required to maintain our competitive advantage.

Qualifications

The Essentials: 7+ years of professional software engineering experience, including at least 3 years in a Senior or Lead capacity.
Proven Track Record: Success within high-velocity teams at top-tier scale-ups or tech organizations known for world-class engineering standards.
Frontend Mastery: A deep passion for complex UI and modern client-side stacks. While you are a Frontend specialist, you are happy to contribute to the backend (Python) to ensure project success.
Enterprise SaaS Background: Experience developing complex tools like real-time collaboration engines, video editors, or experimentation platforms.
Commercially Driven: You thrive in "no-politics" environments and are motivated by the measurable success of the products you build.
Leadership & Mentorship: Prior experience leading small engineering squads or mentoring junior talent is highly valued.