Overview

UI/UX Frontend Engineer – AI Systems role at Symbolica AI. We’re building AI that understands the structures of thought, not just patterns in data. Symbolica is an AI research lab pioneering the application of category theory to enable logical reasoning in machines. We’re a well-resourced, nimble team of experts on a mission to bridge the gap between theoretical mathematics and cutting-edge technologies, creating symbolic reasoning models that think like humans – precise, logical, and interpretable.

Our approach combines rigorous research with fast-paced, results-driven execution. We’re reimagining the foundations of intelligence while developing product-focused machine learning models in a tight feedback loop, where research fuels application.

Founded in 2022, we’ve raised over $30M from leading Silicon Valley investors to push the boundaries of applying formal mathematics and logic to machine learning. Our vision is to create AI systems that transform industries, empowering machines to solve humanity’s most complex challenges with precision and insight.

About The Role

As a founding UI/UX Frontend Engineer, you will work on a highly technical interface for deploying AI systems, where the target audience will be developers, so a strong background in software engineering will be highly useful as part of understanding your user.

You’ll take ownership of building and iterating on functional prototypes for potential customer use cases, ensuring seamless end-to-end integration across the stack. You’ll also work closely with our research team to create interactive interfaces that bring agentic systems to life.

Your Focus

• Own the first impressions and technical storytelling for a new developer-facing product.
• Design and implement intuitive, responsive UI for complex systems.
• Build, test, and iterate on functional prototypes based on real user needs.
• Collaborate with researchers, engineers, and product leads to turn ideas into polished features.
• Create and maintain reusable frontend components and design systems.
• Debug performance issues and run A/B tests to continuously improve UX.

About You

• Excellent at translating complex ideas into simple, usable UI.
• Proficient in TypeScript and React.
• Passionate about seamless design and building products with an excellent developer experience.
• Comfortable prototyping quickly and shipping production-ready code.
• Experience working on machine learning and/or AI projects is a plus.
• Experience building scalable, responsive web apps, including RESTful APIs and GraphQL.
• Passion for writing clean, maintainable, and well-documented code.
• Effective communication skills and a collaborative mindset to work across diverse teams.
• Bonus: experience with Rust.

Compensation, Location, and Diversity

We offer competitive compensation, including an attractive equity package, with salary and equity levels aligned to your experience and expertise.

This is an onsite role based in our London office (66 City Rd).

This role is eligible for Skilled Worker visa sponsorship; the role exceeds the UK minimum salary threshold for visa sponsorship. English language proficiency at B2 level or higher is required.

Symbolica is an equal opportunities employer. We celebrate diversity and are committed to creating an inclusive environment for all employees, regardless of race, gender, age, religion, disability, or sexual orientation.