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Senior Software Engineer, A(P)I Client

Senior Software Engineer to build AI into Postman client.
Postman
Hybrid
On-Site
United States
USD 200,000 - 250,000
Job Description
Postman is seeking a Senior Software Engineer to join their API Client team. This role is based in San Francisco, California. The Senior Software Engineer will play a key role in accelerating Postman's AI-native future by building new ways for developers to interact with APIs using large language models and deeply embedding AI into the core product. Postman is the world’s leading API platform, used by more than 40 million developers and 500,000 organizations, including 98% of the Fortune 500.

What this role involves:
  • Building intuitive, powerful UI surfaces to help users work with LLMs like they do APIs.
  • Designing and implementing backend services to support bring-your-own-model workflows.
  • Evolving the MCP client—Postman’s interface for building and debugging tools, prompts, and resources.
  • Staying on top of the fast-moving AI landscape and make sharp, informed decisions about what’s worth building now.
  • Collaborating closely with design and product to make AI-native workflows feel first-class and seamless.
  • Helping shape the protocol layer: how we represent tools, resources, and AI interactions in a standardized, interoperable way.
  • Shipping great code, help others grow, and drive urgency around high-leverage opportunities.

Requirements:
  • 6–7+ years of experience building full-stack or frontend-heavy applications at scale.
  • Deep expertise in JavaScript/TypeScript and React.
  • Stay current with the latest in AI/LLM tooling (e.g., OpenAI, Claude, local model runtimes, LangChain, etc.).
  • Energized by ambiguity and change.
  • Think like a builder and a product thinker.
  • Believe the best roadmap is built through fast learning and frequent shipping.

What this role offers:
  • Work on one of the most exciting surfaces in the company—where AI meets APIs.
  • Ship work that influences how millions of developers build, debug, and think.
  • Help Postman go from AI-enabled to AI-native—and shape the future of how software gets built.
  • Comprehensive benefits, including full medical coverage, flexible PTO, wellness reimbursement, and a monthly lunch stipend.
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