Frontend Engineer - Design Systems

Mercury's Design Systems team helps product teams build interfaces that feel consistent, accessible, and carefully considered. We're hiring a Frontend Engineer to help evolve the shared components and patterns behind those experiences, making it easier for teams across Mercury to turn good ideas into well-crafted software.

You'll work closely with designers and engineers to understand product needs, explore solutions, and carry improvements into the hands of the teams using them. This role is open to early-career and intermediate engineers. You'll build depth in frontend engineering and design systems through meaningful project ownership, with guidance from experienced teammates suited to your experience.

Design systems will be your initial focus within the team's broader Design Foundations work. As opportunities and interests align, you can also contribute to code-based prototyping and tools that help designers and AI agents work with Mercury's components. Strong AI fluency is part of how we build from the start.

As part of this role, you will

• Build shared components and patterns that make Mercury's interfaces better. You'll work in React and TypeScript, turning recurring product needs into flexible solutions that teams can use across different experiences.
• Partner with designers and product engineers to connect design intent with working software. Help evolve components and tokens across Figma and code, using feedback from real product work to improve the system.
• Improve the quality of the experiences built with our components. Consider how they look and behave