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Sr. Product Engineer

Navan - London, United Kingdom - In-office

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Navan is building the next generation of intelligent travel experiences powered by AI agents, loyalty, and personalization. As a Senior Product Engineer, you will drive the technical vision, architecture, and execution for a highly available, new specialty travel platform that unlocks new verticals for the existing Navan business. Key Responsibilities: - Architect core backend systems: Design, build, and scale high-performance, fault-tolerant microservices that process millions of travel and expense transactions globally. - Build micro front ends: Design and develop clean, user-friendly interfaces for Navan users. - Lead technical initiatives: Drive complex, cross-functional engineering projects from conception to deployment, making critical architectural trade-offs and setting technical standards for the wider backend organization. - Optimize performance and reliability: Build robust APIs, asynchronous event-driven architectures, and scalable data pipelines with a focus on low latency, high availability, and operational excellence. - Collaborate cross-functionally: Partner with product management, engineering leadership, data, and platform teams to translate business requirements into enterprise-grade technical solutions. - Raise the engineering bar: Champion maintainable code, thoughtful abstractions, and rigorous testing. Mentor engineers, lead architecture reviews, and foster a culture of strong operational ownership. Navan is a Nasdaq-listed, AI-powered business travel and expense platform serving frequent travelers globally. The company has been recognized as a Best Place to Work by Built In (2023–2026), a G2 Best Global Software Company (2025–2026), Forbes Cloud 100 (2022–2025), and CNBC Disruptor 50 (2022–2025). Workplace: Employees work from the office four days a week. Navan invests in global office spaces with in-office perks including company-provided lunches and happy hours. Requirements: - 6+ years of software engineering experience building and operating highly scalable, distributed production systems at enterprise or global scale. - Deep technical expertise in backend engineering stacks including Java, TypeScript/Node.js, Python, Go, or other VM-based languages, with strong mastery of engineering fundamentals. - Exposure to front-end technologies such as React or Angular. - Extensive hands-on experience designing microservices, complex APIs, event-driven workflows, and working with distributed systems and databases. - Proven track record of driving technical vision and leading architecture of large, multi-team projects from inception through successful production rollouts. - Exceptional skills in systems observability with SLO/SLI experience. - Experience with production debugging and ensuring reliability of critical Tier 1 services. - Product mindset with ability to balance immediate product delivery with long-term technical health and scalability. - Bonus: Experience with travel platforms, fintech, payment processing, or complex financial ledgers.

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