Senior Engineer, Messaging 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. The Opportunity We're looking for a Senior Backend Engineer to help us reinvent Postman's Notifications Platform for the next generation of AI-powered, agent-driven experiences. As Postman evolves to support agents and autonomous workflows, notifications become much more than simple alerts. They need to be contextual, intelligent, reliable, and deeply integrated into how users interact with the platform. You'll play a key role in building the foundation that makes that possible. This isn't a role focused on maintaining an existing system. It's an opportunity to rethink and rebuild a critical platform from the ground up that will power notification experiences across Postman for years to come. You'll have significant influence over the platform's architecture, reliability, and developer experience, working closely with teams across the company to build something scalable, intuitive, and easy to adopt. What You'll Do As a Senior Backend Engineer on the Messaging team, you'll help design and build the next generation of our Notifications Platform. Some of the things you'll work on include: Reimagining the platform to support agentic, event-driven notification workflows. Designing backend systems that enable contextual notifications triggered by agents, workflows, and product events. Building reliable platform primitives for triggering, routing, delivery, retries, deduplication, rate limiting, user preferences, and notification lifecycle management. Partnering closely with teams building Agents and AI-powered experiences to understand their needs and translate them into scalable platform capabilities. Improving the developer experience through well-designed APIs, self-serve tooling, documentation, and integration workflows. Expanding observability across the entire notification lifecycle—understanding what triggered a notification, why it was sent, how it was delivered, and whether it succeeded. Ensuring the platform is designed with reliability and user trust at its core, minimising issues such as duplicate sends, stale notifications, noisy experiences, and incorrect targeting. Collaborating across infrastructure, product, design, support, and platform teams to deliver a seamless notification experience for both users and internal developers. Contributing to technical strategy, architecture reviews, engineering standards, and design discussions within the Messaging team. Mentoring engineers and helping raise the technical bar across the organisation. About You You're someone who enjoys building platforms that other engineers love to use and can confidently navigate complex distributed systems. We're excited to talk if you have: 6+ years of backend engineering experience building distributed systems, platform services, or large-scale backend applications. Strong proficiency in one or more common backend languages such as JavaScript, Python, Java, Go, PHP, or C++. Experience designing APIs, frameworks, or platform abstractions that are used by multiple engineering teams. A strong understanding of reliability, observability, operational excellence, and system failure modes. Experience working with event-driven architectures, messaging systems, queues, workflow engines, or orchestration platforms. The ability to translate product requirements into durable, scalable platform capabilities. A collaborative mindset and experience driving alignment across teams with different priorities. A preference for simple, reliable solutions over unnecessary complexity. Strong communication skills and a sense of ownership that helps move ambiguous projects from idea to production. Curiosity about AI and agentic product experiences, and how infrastructure needs to evolve to support them. And, ideally, a good sense of humour, we appreciate people who enjoy what they do. 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, New York City, 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.