Front End Engineer in London

Improbable is a Venture Builder and a pioneering technology company developing next-generation networked and digital infrastructure for the web3 economy. We are working with leaders to create businesses in AI transformation, the metaverse and web3. Founded in 2012 and headquartered in London, Improbable began as an ambitious experiment to enable vast, persistent, and interactive online worlds. Over the past decade, the company has evolved into a global leader in venture building, decentralised technology, digital assets, and blockchain-enabled infrastructure, empowering creators, brands, and communities to build and scale the next era of digital experiences.

At Improbable, you are surrounded by people who want to improve everything and everyone around them, and who compel you to improve yourself. We are motivated by the fulfilment of solving hard problems to achieve something profound and transformative.

The Role

As a Frontend Engineer, you will be a key contributor to the user interfaces across our DeFi ecosystem. You will focus on implementing well-defined features and components, helping the team deliver a seamless, consumer-grade UX while learning about the complexities of blockchain backend constraints. You will join a collaborative, cross-functional team of friendly, adaptable, creative, and product-minded engineers who are passionate about building high-quality, user-centric software that delivers real impact.

Your Opportunity

• Contribute to product development by assisting with feature implementation and collaborating with technical leadership on execution details.
• Collaborate effectively with full-stack engineers, R&D engineers, and product specialists to deliver stable and tested services.
• Implement UI components and features using defined design patterns and reusable UI frameworks.
• Develop your skills by learning and applying new systems, design patterns, and tooling, while supporting the team's commitment to engineering best practices.

We're Looking For

• Foundational software development experience, including contributing to and maintaining user-facing systems.
• Frontend expertise, with a solid working knowledge of React (ideally with Next.js), TypeScript, and responsive UI design.
• Understanding of UI design patterns, with the ability to build and maintain simple, reusable components.
• Ability to contribute to rapid prototypes to validate ideas, and then help promote successful features into robust, production-grade architecture under mentorship.
• Familiarity with cloud concepts, and basic exposure to cloud providers (GCP, AWS/Azure are acceptable) is a plus.
• Comfort with modern tooling and an eagerness to leverage AI-assisted workflows (Copilot, Cursor, etc.) to accelerate personal velocity.
• Working knowledge of browser internals, the critical rendering path, the DOM, and networking concepts.

Nice to Have

• Experience launching greenfield products from scratch.
• Technical understanding of blockchain technologies including DeFi and EVM ecosystem.

While we think the above experience is important, we are very keen to hear from people who believe they have valuable experience to bring to this role. If you identify with the team and mission, but not all of our requirements, then please still apply.