Jobs Companies Navan Sr. Software Engineer (Full-stack)

About this Sr. Software Engineer (Full-stack) role at Navan

Navan · Onsite · London, UK

We believe “It’s all about the user. All of them.” We’re passionate about providing a seamless one-stop experience for business travelers, no matter how they travel, where they stay, or where they’re going.

We are looking for a Sr. Full-Stack Engineer to lead the design and development of mission-critical product features and services that power our platform, used daily by thousands of travelers worldwide. You will play a pivotal role in shaping technical direction, mentoring engineers, and driving cross-team initiatives to deliver scalable, reliable, and user-focused solutions.

What You’ll Do

  • Lead technical strategy and architecture for core backend and frontend components of the platform, ensuring scalability, reliability, and performance.
  • Own complex domains end-to-end: from design through development, launch, and ongoing evolution of key microservices and customer-facing features.
  • Influence cross-functional teams (engineering, product, design) by aligning technical execution with business goals and long-term product vision.
  • Raise the technical bar through code reviews, architectural guidance, and fostering best practices in testing, monitoring, and documentation.
  • Mentor and coach engineers across the organization, helping to grow technical skills and leadership capabilities.
  • Partner with leadership to define and execute a multi-year technical roadmap, ensuring that platform investments support company growth at scale.

What We’re Looking For

  • 5+ years of software development experience, with deep expertise in both backend and frontend systems.
  • Strong programming skills and CS fundamentals, with mastery in at least one backend language (Java, Python, etc., preference: Java and Spring Boot) and modern frontend frameworks (React, Angular, TypeScript).
  • Proven experience designing and evolving large-scale distributed systems and microservice architectures.
  • Demonstrated ability to own technical domains, making architectural trade-offs and long-term design decisions.
  • Experience driving cross-domain initiatives, coordinating with multiple teams to deliver cohesive solutions.
  • Track record of mentoring engineers, leading technical discussions, and influencing outcomes at an organizational level.
  • Experience with cloud platforms (AWS preferred), CI/CD pipelines, and modern DevOps practices.
  • Passion for solving complex problems, continuously learning, and delivering customer-focused innovations.
  • Excellent communication skills with the ability to influence technical and non-technical stakeholders alike.

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About Navan

ABOUT TRIPACTIONS

TripActions is the fastest-growing corporate travel platform disrupting a $1.5T industry and shaping the future of business travel.

TripActions is a story of inspiration born of frustration. Road warriors and co-founders Ariel Cohen and Ilan Twig believed that companies deserved a travel solution that takes the pain out of work trips –– so that their travelers can focus on being productive and meeting in-person, not wasting valuable time booking travel. So in 2015, they created TripActions. Since then, we’ve been a mission to power the face-to-face, in-person connections that move people, ideas and businesses forward.

TripActions’ platform offers a vast selection of inventory that travelers can choose from, a personalized, intuitive user interface driven by machine learning, and 24/7 proactive real human, customer support. Companies enjoy complete travel program visibility, over 30% cost savings on average and seamless integrations with their HR and expense systems.

Globally, TripActions has grown to over 600 employees across 7 offices in 4 countries. We support over 1,500 customers, with innovative brands like Lyft, Dropbox, Sara Lee Frozen Bakery, Allbirds, Robinhood and the ACLU relying on TripActions for their business travel needs. As one of Silicon Valley’s newest “unicorns”, TripActions has a valuation north of $1B and a total of $232M in funding. We’ve recently received $154M in our Series C funding round –– led by new investor Andreessen Horowitz, with participation from repeat investors Lightspeed Venture Partners, Zeev Ventures and SGVC.

TripActions was recently recognized as one of Fast Company’s Most Innovative Companies for 2019, #12 in LinkedIn’s Top Startups 2018 and #3 in the U.S. for Happiest Employees by Comparably.

We’re redefining what it means to travel for work. Come help us build the future of business travel.

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