Staff Full Stack Engineer

Posted An Hour Ago
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Tel Aviv, ISR
Hybrid
Senior level
Fintech • Information Technology • Payments • Productivity • Software • Travel • Automation
Travel & expense made easy.
The Role
Lead architecture and hands-on development of AI-powered SaaS products and workflow automation. Build scalable full-stack features, backend services, event-driven workflows, and LLM-powered capabilities. Own production quality, observability, security, privacy, testing, and operational readiness while mentoring engineers and coordinating cross-functional initiatives with Product, Design, Operations, SRE, Security, Data Science, and Legal.
Summary Generated by Built In

We’re looking for a hands-on Staff Full Stack Engineer to join our growing engineering team in Tel Aviv. You will design and build AI-powered products and workflow automation that help our teams deliver better customer experiences.
As the team’s technical lead, you will shape architecture, guide engineering decisions, and lead complex initiatives from discovery through production. You’ll remain deeply involved in implementation while mentoring engineers and partnering with Product, Design, and Operations to turn ambiguous business needs into reliable, scalable solutions.
What You’ll Do

  • Own the team’s technical direction, lead architecture and design reviews, and guide implementation across frontend, backend, and integrations.
  • Design, build, and deliver impactful product capabilities, from identifying user needs through deployment and ongoing improvement.
  • Build reliable backend services and event-driven workflows, including asynchronous processing, retries, idempotency, and failure recovery.
  • Develop AI-powered experiences with grounding, evaluation, human review, and clear failure handling.
  • Establish engineering practices for testing, observability, security, privacy, AI safety, cost management, and operational readiness.
  • Own production quality and supportability, using usage data, customer feedback, and production insights to improve reliability, usefulness, and adoption.
  • Mentor engineers, grow their technical ownership, and raise the team’s engineering standards.
  • Partner with Product, Design, Operations, SRE, Security, Data Science, Legal, and engineering teams across Travel and Expense to understand problems, resolve ambiguity, and define clear requirements.
  • Communicate technical decisions and trade-offs clearly to technical and non-technical stakeholders, coordinating cross-team initiatives and dependencies.

What We’re Looking For

  • Strong programming skills and computer science fundamentals, with 6+ years of experience building production SaaS products.
  • Strong production experience with Java and Spring Boot, including designing, building, and operating backend services.
  • Proven experience designing and operating event-driven systems, including reliable message delivery, asynchronous processing, retries, idempotency, and failure recovery.
  • Full-stack development experience with React or Angular, and proficiency in JavaScript or TypeScript.
  • Strong understanding of distributed systems, microservices, API design, relational databases, transactions, and ORM technologies such as Hibernate.
  • Demonstrated technical leadership: setting architectural direction, leading complex initiatives, making sound trade-offs, and helping other engineers deliver effectively.
  • Experience delivering LLM-powered capabilities to production, including evaluation, monitoring, and quality improvement.
  • A strong sense of ownership, demonstrated through maintainable production code, meaningful testing, monitoring, and documentation.
  • Excellent communication skills and the ability to work with stakeholders and domain experts to translate business problems into practical technical solutions.
  • Sound judgment when balancing delivery speed, reliability, security, and long-term maintainability.
  • Curiosity, a practical approach to problem-solving, and a willingness to learn and adopt new tools and technologies.

Nice to Have

  • Experience with Node.js and backend frameworks such as NestJS.
  • Experience with AWS, containerized services, infrastructure as code, and CI/CD.
  • Experience building internal tools or automating complex operational workflows.
  • Familiarity with AI evaluation platforms, retrieval systems, and agent tooling.

Navan uses AI-assisted Automated Employment Decision Tool (Metaview) to assist with evaluating resumes against job qualifications for this role. All final decisions are made by human recruiters and hiring managers. 

Human oversight: Metaview does not automatically reject candidates or make final hiring decisions. Our recruiters and hiring managers review all outputs and make the final hiring decision regarding every application. 

  • Your rights: If you prefer to have your application reviewed without AI assistance, you may request a human evaluation by entering your email here. Your decision to do so will not affect how your candidacy is evaluated. 

Please refer to our Candidate Privacy Notice for more information about our processing of personal data, and your rights.

Skills Required

  • Strong programming skills and computer science fundamentals
  • 6+ years of experience building production SaaS products
  • Strong production experience with Java and Spring Boot
  • Experience designing and operating event-driven systems, including asynchronous processing, retries, idempotency, and failure recovery
  • Full-stack development experience with React or Angular
  • Proficiency in JavaScript or TypeScript
  • Understanding of distributed systems, microservices, API design, relational databases, transactions, and ORM technologies such as Hibernate
  • Demonstrated technical leadership and architectural decision-making
  • Experience delivering LLM-powered capabilities to production, including evaluation, monitoring, and quality improvement
  • Experience writing maintainable production code with meaningful testing, monitoring, and documentation
  • Excellent communication and stakeholder collaboration skills
  • Sound judgment balancing delivery speed, reliability, security, and maintainability
  • Curiosity, practical problem-solving, and willingness to learn new tools and technologies
  • Experience with Node.js and backend frameworks such as NestJS
  • Experience with AWS, containerized services, infrastructure as code, and CI/CD
  • Experience building internal tools or automating complex operational workflows
  • Familiarity with AI evaluation platforms, retrieval systems, and agent tooling

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 — Medical, dental, and vision coverage for employees and families are explicitly offered, and healthcare is often characterized as a strong part of the package with mental‑health resources included. This breadth of core health benefits is consistently highlighted alongside lifestyle supports.
  • Leave & Time Off Breadth — Policies emphasize flexible/unlimited vacation in the U.S., with region‑specific structures such as five weeks of paid annual leave in the UK. This scope of time‑off options is presented as a clear advantage.
  • Parental & Family Support — Paid parental leave is structured at 16 weeks for birthing parents and 10 weeks for non‑birthing parents. This level of support is positioned as a meaningful benefit for families.

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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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