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The Senior Backend Engineer will design and implement backend services integrating AI technologies, ensuring reliability, performance, and security within consumer-facing products.
We are seeking a skilled Senior Backend Engineer to join our team and help us build Navan Cognition, a multi-agent AI platform. The ideal candidate will have strong backend engineering expertise and enthusiasm for working with cutting-edge AI technologies.
About the Role:
You'll be responsible for designing and implementing backend services that integrate AI capabilities including large language models (LLMs), retrieval-augmented generation (RAG), and conversational interfaces into our consumer-facing products. This is an opportunity to expand your expertise into AI while leveraging your strong engineering foundation.
What You’ll Do
- Design and develop scalable, high-performance backend services and APIs
- Implement integrations with AI platforms and services
- Work with AI specialists to translate AI capabilities into production-ready features
- Ensure high reliability, performance, and security of AI-powered systems
- Collaborate with product and engineering teams to gather requirements and deliver solutions
What We’re Looking for:
- Proven Backend Expertise: 5+ years of professional experience, with a strong foundation in building and maintaining robust backend systems for large-scale consumer or enterprise products.
- Technical Mastery: Advanced proficiency in at least one modern backend language (TypeScript and Node.js), with hands-on experience developing production-grade APIs and microservices. Experience with Lambda functions is a big plus.
- Scalable Systems Builder: Demonstrated experience architecting and delivering high-availability services and distributed systems, leveraging patterns for reliability, performance, and security.
- Cloud-Native Engineering: Deep familiarity with cloud platforms (AWS, GCP, or Azure), including hands-on experience with serverless technologies (e.g., AWS Lambda), infrastructure-as-code, and automated deployment pipelines.
- Data Fluency: Solid experience with both SQL and NoSQL databases; knowledge of vector databases and embedding/search technologies is a big plus.
- AI Platform Integration: Experience integrating with modern AI services (OpenAI, Hugging Face, etc.), and enthusiasm for collaborating with ML/AI specialists to bring LLMs, RAG, and conversational AI capabilities into production.
- Results-Oriented Delivery: A track record of shipping consumer-facing features at scale, collaborating closely with both product and engineering teams.
Forward-Thinking Problem Solver: Eager to explore new technologies, solving complex problems using both solid engineering fundamentals and innovative approaches.
Top Skills
AWS
Aws Lambda
Azure
GCP
Node.js
NoSQL
SQL
Typescript
Navan London, England Office
81-87 High Holborn, London, United Kingdom, WC1V 6DF
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