UI/UX Front End Engineer

At Carbon, we’re delegating differently by combining our strong insurance expertise with cutting edge technology. As we rapidly scale globally, and continue to advance Graphene, our proprietary owned data ecosystem, we remain guided by our core pillars of People, Partnerships and Innovation. If you want to join an exciting business powered by the latest technology, and are energised by collaboration, big ideas and making a meaningful impact to our partners, then this role is for you.

Founded in 2018, Carbon’s mission is to transform delegated underwriting and raise the standard for the industry. Our open underwriting model connects data, insight and people to enable stronger decisions and more dynamic portfolio management, bringing greater transparency, clarity and confidence to our partners and to the way the whole market works. We’re proud to have been recognised by The Sunday Times as a Best Place to Work in both 2024 and 2025, reflecting our warm, inclusive culture and our energetic, entrepreneurial spirit. Our friendly, modern offices foster creativity and connection, while our partnership with Google Cloud, where we are celebrated as a success story, demonstrates our commitment to innovation and technology at the highest level. At Carbon, our values shape who we are every day: Win as one, Keep spirits high, Blaze a trail, Speak up, listen up. If you’re looking to join a modern team with bold ambitions and real momentum, we’d love to meet you.

Location: 5th Floor, 9A Devonshire Square, London, EC2M 4YN

Start date: Immediate

Role type: Permanent, full-time, hybrid

The Opportunity: As a Frontend Engineer at Carbon, you’ll take a leading role in shaping the user experience of our two flagship in‑house platforms: Graphene Insights (our analytics engine) and Graphene Studio (our proprietary data preparation environment). This is a hands‑on role at the core of our technology strategy, working closely with designers, engineers, and end users to deliver exceptional interfaces that power smarter underwriting.

The Role Main Tasks:

• Own the end‑to‑end front‑end delivery for Graphene Studio and Graphene Insights from interaction design and UX flow through to production‑ready implementation.
• Champion front‑end excellence across information architecture, interaction design, accessibility, performance, and code quality.
• Build responsive, accessible, modern React UIs using clean, testable, well‑structured TypeScript/JavaScript.
• Collaborate across the stack, partnering with engineers for code reviews, CI/CD improvements, and API integration.
• Work directly with end users to gather feedback, translate needs into features, and refine the UX of complex analytical workflows.
• Operate in a tight‑knit, agile team with a culture of shared ownership and no silos with opportunities to gain exposure across the full stack.
• Take ownership of key components of the platform and help steer the future of the Graphene product suite.
• Participate in client demos, contributing to how we present the platform both internally and externally.
• Work closely with the business to build deep understanding of underwriting, delegated authority workflows, and our analytics products.

Skillset/background:

• 3+ years’ experience in UI/UX for complex web applications, with a portfolio that demonstrates strong product thinking.
• 3+ years building production front‑end applications in React (TypeScript preferred).
• Strong skills in JavaScript/TypeScript, with Python exposure seen as a bonus.
• Cloud experience, we use GCP but AWS / Azure exposure is also valued.
• Interfacing with APIs.
• Experience in a start‑up or scale‑up environment, or an appetite to work in one.
• A computer science or similar technical degree, or equivalent professional experience.
• Any independent or open‑source projects are a big plus, we love seeing what you build.