Principal Engineer

Leena AI · Conversational AI · Human Resources · JavaScript · Java · SQL · Node JS · 2 months ago
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Salary
≈ $23k – $57k per year (Estimated)
Location
In office (Gurgaon)
Seniority
Principal · 5+ years exp

First seen by Alion on Sep 10, 2026.

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Leena AI

Leena AI is an enterprise agentic AI company that provides AI colleagues to transform back-office functions, having started as an HR chatbot that answers employee queries. It hires backend engineers, an engineering manager, information security heads and professional services project managers. The company is headquartered in Palo Alto, California, United States.
leena.ai · HQ: Palo Alto, United States · AI Agents · HR & Recruiting AI · Conversational AI · 11-50 employees · Est. 2015
Tech stack of Leena AI
Backed by Y Combinator, Bessemer Venture Partners, Greycroft

Responsibilities:

  • Lead the architecture and technical delivery of large-scale backend and AI projects.
  • Design and build AI-first applications using LLMs, LangChain, and LangGraph.
  • Develop scalable backend services using Node.js, Java, or NET.
  • Build AI agents, multi-agent workflows, RAG pipelines, and LLM orchestration systems.
  • Integrate LLMs with enterprise applications and external APIs.
  • Drive engineering best practices, code quality, scalability, and system reliability.
  • Collaborate with Product, AI/ML, and Engineering teams to deliver business-critical features.
  • Mentor engineers through technical guidance and design reviews while remaining an individual contributor.

Requirements:

  • 5-8 years of backend software engineering experience.
  • Strong expertise in Node.js OR Java OR. NET.
  • Hands-on experience with LangChain and LangGraph (Mandatory).
  • Experience building AI agents, RAG pipelines, and LLM-based applications.
  • Strong understanding of system design, distributed systems, microservices, and API development.
  • Experience with cloud platforms (AWS, Azure, or GCP).
  • Strong knowledge of databases (SQL/NoSQL), caching, messaging systems, and scalable architectures.
  • Excellent problem-solving, communication, and technical leadership skills.
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