Sr. Software Engineer (Full-stack)

Reposted 8 Days Ago
Easy Apply
London, Greater London, England, GBR
Hybrid
Senior level
Fintech • Information Technology • Payments • Productivity • Software • Travel • Automation
Travel & expense made easy.
The Role
Lead design and implementation of scalable backend and frontend systems, own domains end-to-end, set technical strategy and architecture, mentor engineers, drive cross-team initiatives, and improve reliability, performance, testing, monitoring, and CI/CD for customer-facing microservices.
Summary Generated by Built In

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.

Skills Required

  • 5+ years of software development experience
  • Mastery in at least one backend language (Java, Python) with preference for Java and Spring Boot
  • Experience with modern frontend frameworks (React, Angular) and TypeScript
  • Proven experience designing and evolving large-scale distributed systems and microservice architectures
  • Experience with cloud platforms (AWS preferred), CI/CD pipelines, and modern DevOps practices
  • Demonstrated ability to own technical domains and make architectural trade-offs
  • Track record of mentoring engineers, leading technical discussions, and influencing organizational outcomes
  • Excellent communication skills able to influence technical and non-technical stakeholders
  • Preference for experience with Java and Spring Boot

What the Team is Saying

Brian Guimond
Adamas Victória Cavalcante Robitz
Bastian Martino
Charlotte Delafosse
Daniella Schuh
Alice Rao-Wyckoff
Mily O Loughlin
Anna
Roshni
Henry Statfeld
Jose Soares

Navan Compensation & Benefits Highlights

  • Healthcare Strength The package includes medical, dental, and vision coverage for employees and dependents, along with mental health resources such as Headspace. Additional protections like disability and life insurance and options like FSA are described.
  • Parental & Family Support Paid parental leave is specified as 16 weeks for the birthing parent and 10 weeks for the non‑birthing parent, with family medical leave also available. Supportive amenities such as an onsite Mother’s Room and company‑sponsored family events are included.
  • Leave & Time Off Breadth Flexible/unlimited vacation and generous PTO structures are highlighted, alongside paid holidays and sick time. Bereavement leave is also offered across many locations.

Navan Insights

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The Company
HQ: Palo Alto, CA
3,300 Employees
Year Founded: 2015

What We Do

Navan (Nasdaq: NAVN) is the leading all-in-one business travel, payments, and expense management platform that makes travel easy for frequent travelers. From finding flights and hotels to automating expense reconciliation, with 24/7 support along the way, Navan delivers an intuitive experience travelers love and finance teams rely on. See how Navan customers benefit and learn more at navan.com.

Why Work With Us

At Navan, we’re never satisfied with the status quo, and we know breakthrough ideas come from diverse perspectives. We are committed to cultivating a workplace that reflects the diversity of the customers we serve while fostering leadership and innovation.

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Navan Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

In-person connections is the foundation of Navan, the connections forged through face-to-face interactions improve company culture and what we can achieve together. We operate on a hybrid working model, which we define as four days a week in-office.

Typical time on-site: 4 days a week
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