Senior Software Engineer

We are looking for a talented Senior UI Engineer who is proficient with AI tools and enjoys building libraries and tools to increase the efficiency of our Design, Engineering, and Product Management teams. You will be a core member of our mature and growing design systems team extending our design system, Anvil , aiding in creating a class-leading SaaS product across platforms and devices.
Reporting to the UI Engineering Manager, Design Systems, the Senior UI Engineer applies technical know-how and eye for design detail to push ServiceTitan s current Design and Engineering standards to an even higher level. You re the kind of person who is passionate about design systems, collaboration and inclusion. You ll live in the space between development and design, pushing the boundaries of user interface design and design systems thinking. You will also leverage and build AI tools for product teams to improve quality and speed of UI design and development. If you are someone interested in building scalable systems, accessibility, adaptive design, building tools, automation, and presenting your work, this role is for you.

What youll do:
Be a core contributor to our design system through code contribution and component feedback
Partner with Design and Engineering teams to extend, adapt, and evolve our shared processes and tooling to support a large number of teams working on a diverse array of products
Utilize best-in-class AI tools like Claude, Cursor, Gemini, and GitHub Copilot, and help improve the internal skills and tooling to be more efficient and effective in our work
Build tools and processes for writing tests, automations, improving our build and release tools, maintaining our documentation and development environments, and championing Accessibility
Build infrastructure and tooling for product designers and engineers to help them utilize design system assets and guidelines when building with AI tools
Document and maintain Engineering standards of the system; writing how, and more importantly why, patterns should be used
Explore and propose frameworks, component and API structures
Be a champion for our users and our consumers, delivering solutions that are scalable and solve real problems
Maintain the integrity and security of our repositories
Drive the adoption of our Design System across the company through communication as well as monitoring adoption metrics

What youll bring:
Experience building production-level web application UI with React and modern build tools
Experience with AI codegen tools, such as Claude Code or Cursor
Understanding of common AI concepts (LLM, MCP, skills, tools, etc.)
Experience building complex libraries that were used by multiple teams
Experience working with CI/CD pipelines
A solid understanding of systems thinking, you see how all the parts fit together and how small changes propagate throughout the system
A strong understanding of HTML, CSS, JS without third-party libraries or frameworks (we use React, TypeScript, Vanilla Extract, Sass, Vite, and more)
Strong communication and empathetic, attentive listening skills with the capability to anticipate the needs of partners
To take ownership of your work and be able to prioritize in collaboration with the team
Ability to consider design compromises and communicate trade-offs