Senior Front-End Engineer, Bonsai

Engineering

• London, United Kingdom

• Full time

Bonsai, now part of Zoom, builds tools that help agencies and professional teams focus on meaningful work. We are looking for a Senior Frontend Engineer to shape interfaces for proposals, contracts, invoices, payments, time tracking, and projects. Make complex workflows simple, elegant, and enjoyable.

Work with Product and Design to define the experience from the ground up. Own your code and your impact. Influence a product used by teams around the world.

Join a team that combines startup energy with Zoom's scale. Your work will help small businesses focus on what matters-not busywork.

At Bonsai, we build technology that helps agencies, consultancies, and professional services teams do their best work without getting buried in busywork. Now part of Zoom, we combine deep operational expertise with Zoom's mission to create meaningful, flexible human connection.

From small studios to growing global teams, we design tools that remove friction across proposals, contracts, projects, time tracking, and billing. Together with Zoom, we build smarter systems, collaborate more freely, and help shape the future of work.

• Leading development of core product surfaces across proposals, invoicing, payments, contracts, and time tracking.
• Designing and implementing component architectures and reusable UI patterns using React and TypeScript.
• Collaborating with Product and Design to deliver user experiences with high clarity, performance, and responsiveness.
• Integrating frontend surfaces with backend services and APIs, including payments, authentication, and workflows.
• Driving frontend performance optimization, regression prevention, and cross-browser/device reliability.
• Contributing to internationalization and localization efforts as Bonsai expands into new geographies and currencies.
• Participating in design reviews, roadmap discussions, and technical planning to shape long-term product strategy.

• Apply deep proficiency in React, TypeScript, Redux and Mobx with understanding of component-driven design.
• Integrate frontend applications with REST APIs and handle complex client-side data flows.
• Collaborate effectively with Product and Design to deliver polished user experiences.
• Ensure frontend performance, testing, and accessibility best practices are met consistently.
• Develop SaaS products; experience with payments, invoicing, or workflow systems is advantageous.
• Operate independently in teams with high autonomy and ownership expectations.

Our structured hybrid approach is centered around our offices and remote work environments. The work style of each role, Hybrid, Remote, or In-Person is indicated in the job description/posting.

As part of our award-winning workplace culture and commitment to delivering happiness, our benefits program offers a variety of perks, benefits, and options to help employees maintain their physical, mental, emotional, and financial health; support work-life balance; and contribute to their community in meaningful ways.