Staff Frontend Engineer | London | AI-Native SaaS | £150,000 + Equity
We’re partnering with a high-growth, venture-backed AI SaaS company in London as they scale their engineering team. We are currently on the lookout for a Staff Front End hire to join their team.
Their platform transforms complex, manual workflows into AI-powered systems used by global enterprise clients. Following rapid growth and a major funding round, they’re now looking for a Staff Frontend Engineer to take ownership of their frontend architecture and help define the next phase of product evolution.
With new AI-driven features launching and the product entering a critical scaling phase, this is a rare opportunity to shape the frontend of an AI-native enterprise platform from an architectural level.
What You’ll Do:
- Own and evolve the frontend architecture of a complex, data-heavy SaaS platform, designing scalable patterns that support long-term product growth.
- Lead framework-agnostic frontend development (React, Vue or similar), making sound architectural decisions around state management, rendering strategies, and performance optimisation.
- Design and build AI-native interfaces, integrating LLM-powered workflows such as streaming responses, prompt orchestration, and intelligent automation features.
- Partner closely with backend and ML engineers to productionise AI functionality securely and reliably within enterprise-grade environments.
- Establish best practices across testing, observability, CI/CD, and frontend performance to ensure high reliability and maintainability.
- Contribute to or establish a scalable design system and component architecture.
- Leverage AI-assisted development tools to accelerate delivery, improve code quality, and modernise engineering workflows.
- Mentor engineers and raise the technical bar across frontend development, influencing standards and long-term technical direction.
What We’re Looking For:
- 7+ years of experience building and scaling modern web applications
- Deep expertise in at least one modern frontend framework (React, Vue, or similar) with strong architectural ownership experience
- Proven experience leading frontend systems at scale rather than just delivering features
- Strong understanding of performance optimisation, rendering trade-offs, and complex state management
- Experience building data-heavy, enterprise-grade interfaces
- Hands-on experience integrating or building with LLMs and AI-powered workflows
- Experience using AI-assisted coding tools in a production environment
- Strong collaboration skills across Product, Design, Backend, and ML teams
- Experience operating within cloud-based, CI/CD-driven environments
Why This Role is Exciting:
- Own frontend architecture at Staff level
- Shape how enterprise users interact with AI systems in production
- Join during a high-growth scaling phase with meaningful influence
- Work on genuinely complex technical problems at the intersection of AI and enterprise software
- Have real impact on technical direction, product experience, and engineering culture
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