User Experience Designer jobs in United Kingdom

Social network you want to login/join with:

• Build end-to-end solutions: Design and develop both the front-end (React, Next.js) and back-end (TypeScript, Node.js) components of the platform.
• Collaborate on core platform features, including a real-time, multi-user IDE for AI workflow development and orchestration.
• Design and implement complex workflows for AI agents, integrating multiple LLM APIs (e.g., OpenAI, Anthropic, Mistral).
• Work with cloud technologies like AWS/Cloudflare to ensure scalability, reliability, and performance.
• Solve challenging engineering problems: Develop an executor for AI workflows that balances real-time performance with traceability, low latency, and scalability.
• Optimize the user experience for both technical and non-technical users by integrating multimodal tools and creating seamless workflows.
• Collaborate closely with users: Gather feedback, troubleshoot issues, and iterate to improve the product.
• Contribute to product decisions and evolve the platform to meet the needs of our diverse user base.

Ideal Candidate

We're looking for a full-stack engineer who:

• Has 4+ years of experience building production-ready software.
• Experienced in backend development (Node.js, serverless architecture, APIs).
• Comfortable with cloud technologies (AWS, Cloudflare, etc.) and understands scalability challenges.
• Has experience working with LLM APIs (OpenAI, Anthropic, Mistral) and/or AI development.
• Thrives in startup environments and is able to take ownership of projects and deliver results quickly.
• Passionate about creating products that impact users and solving complex problems with scalable, maintainable code.

Bonus Points for:

• Previous founder or CTO experience in a tech startup.
• Familiarity with real-time collaborative tools (e.g., Y.js) and multi-agent systems.
• Experience in AI development or AI tooling.

Why Join This Startup?

• High-impact role: Help define the future of AI development and be a key player in a growing industry.
• Early-stage influence: Shape the product, culture, and strategic direction of the company.
• Competitive salary ($, - $,) and equity in a rapidly growing startup.
• Work in a dynamic, startup-first culture-we believe in getting things done and having fun along the way.
• Office just 30m from the ocean-yes, there's a sauna and crossbow competitions.

Encouraging Diverse Applications

We encourage applicants from all backgrounds and experiences, including women, non-binary professionals, underrepresented groups in tech, career changers, and those returning to the workforce.

If you're excited about building the next wave of AI development tools and working in a fast-paced, high-impact environment, we'd love to hear from you!