Sr. Engineer, Client Platform (UI Platform)

Who Are We? Postman is the world’s leading API platform, used by more than 45 million+ developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration—enabling users to create better APIs, faster. The company is headquartered in San Francisco and has offices in Boston, New York, Austin, Tokyo, London, and Bangalore - where Postman was founded. Postman is privately held, with funding from Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Learn more at postman.com or connect with Postman on X via @getpostman. P.S: We highly recommend reading The "API-First World" graphic novel to understand the bigger picture and our vision at Postman. About the Team The Client Platform organization provides the paved path for building, testing, and releasing Postman’s web and desktop applications. We own frameworks, design systems, SDKs, build tooling, and shared infrastructure that product engineers depend on every day. The UI Platform group focuses on creating reliable, accessible, and performant UI foundations used across Postman. The Opportunity As a Senior Software Engineer on the Client Platform team, you’ll help shape the front-end foundations that Postman relies on. This includes the design system and the reusable components that power both web and desktop experiences. Your work will influence how hundreds of engineers build, improving consistency, performance, and the overall developer experience. This is a hands-on role. You’ll build components, help define UI architecture, and partner with engineers and designers to turn ideas into scalable UI systems. In practice, you’ll push the UX layer forward, enabling teams to ship high-quality features without reinventing core patterns. What You’ll Do Evolve front-end architecture, including component libraries, layout patterns, theming, and global UI behaviors. Implement specialized UI components where needed (e.g., editors, grids, structured data components) with a focus on performance and usability. Ensure components support accessibility, keyboard interaction patterns, and internationalization/localization standards. Support product teams in adopting UI Platform components and patterns, providing guidance and identifying opportunities to simplify or extend the platform. Contribute to documentation, developer tooling, and internal processes that make it easier to build high-quality UI consistently. Identify UI-related technical debt or architectural gaps and proactively drive improvements. Mentor other engineers, participate in design reviews, and influence technical decision-making. About You You enjoy creating clean, scalable components and UI patterns that others depend on. You think beyond features and consider how systems evolve. You take ownership of problems, not solutions. You communicate clearly and listen effectively. You seek new perspectives and build trust with your team and colleagues. You care about performance, reliability, and the little things that make interfaces feel polished. Your Experience 6+ years building UI for complex web applications. Deep understanding of JavaScript/TypeScript and React. Experience creating and maintaining reusable component libraries or design systems. Strong knowledge of UI performance, including rendering costs, bundling, and responsive interaction patterns. Familiarity with accessibility and internationalization principles. Experience improving developer experience through process, documentation, and/or tooling. Able to independently lead medium-to-large technical projects and contribute thoughtfully to team-level architectural decisions. The reasonably estimated base salary for this role ranges from $220,000 to $240,000, plus a competitive equity package. Actual compensation is based on the candidate's skills, qualifications, and experience. What Else? In addition to Postman's pay-on-performance philosophy, and a flexible schedule working with a fun, collaborative team, Postman offers a comprehensive set of benefits, including full medical coverage, flexible PTO, wellness reimbursement, and a monthly lunch stipend. Along with that, our wellness programs will help you stay in the best of your physical and mental health. Our frequent and fascinating team-building events will keep you connected, while our donation-matching program can support the causes you care about. We’re building a long-term company with an inclusive culture where everyone can be the best version of themselves. At Postman we value in person collaboration. We are in office 5 days a week for all roles based out of our hubs in San Francisco Bay Area, Boston, Austin, Tokyo and London. For roles based in Bangalore, employees currently work in the office three days a week and will transition to five days per week by the end of the year. We were thoughtful in our approach which is based on collaboration and grounded in feedback from our workforce, leadership team, and peers. The benefits of our in office model will be shared knowledge, brainstorming sessions, communication, and building trust in-person that cannot be replicated via zoom. Our Values At Postman, we create with the same curiosity that we see in our users. We value transparency and honest communication about not only successes, but also failures. In our work, we focus on specific goals that add up to a larger vision. Our inclusive work culture ensures that everyone is valued equally as important pieces of our final product. We are dedicated to delivering the best products we can. Equal opportunity Postman is an Equal Employment Opportunity and Affirmative Action Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender perception or identity, national origin, age, marital status, protected veteran status, or disability status. Headhunters and recruitment agencies may not submit resumes/CVs through this website or directly to managers. Postman does not accept unsolicited headhunter and agency resumes. Postman will not pay fees to any third-party agency or company that does not have a signed agreement with Postman.