Technical Lead Python Agentic AI And 038; LLM

LetzBizz; Chennai District; On-site; INR 4,000,000 - 6,000,000; Full time

Job summary

LetzBizz in Chennai is seeking an experienced Technical Lead to own the end-to-end technical architecture for an enterprise SaaS product built with agentic AI and large language models. You will guide backend engineering, set engineering standards, and stay hands-on with the most critical areas of the platform.

You will lead multi‑tenant design, API and data model decisions, and mentor a growing team of engineers while collaborating with product and security.

Qualifications

• 8–12 years of software engineering experience.
• Experience leading backend engineering teams of five or more engineers.
• Proven experience architecting multi-service platforms with clear domain boundaries.
• Deep expertise in Python, asynchronous programming, FastAPI and production-scale backend development.
• Strong experience with PostgreSQL and MongoDB, including design and migrations.
• Experience building production systems using LLMs, agentic AI or orchestration frameworks.

Responsibilities

• Own the end-to-end technical architecture and convert it into a practical delivery roadmap.
• Lead the design of scalable backend services, APIs and data models.
• Architect AI integration layers covering LLM provider abstraction, prompt versioning, caching, fallback mechanisms and cost control.
• Design agentic AI systems involving orchestration, tool use, structured outputs and reliability guardrails.
• Define integration frameworks for enterprise systems, databases and third‑party APIs.
• Drive multi‑tenant architecture, access control, auditing and compliance readiness.
• Establish engineering standards for testing, CI/CD, code reviews and technical documentation.
• Mentor engineers, conduct design reviews and strengthen the team’s technical capabilities.
• Remain hands‑on and develop code for critical components of the platform.

Skills

Team leadership

Backend architecture

API design

Cloud infrastructure

Tools

Python

FastAPI

PostgreSQL

MongoDB

Redis

Docker

Kubernetes

LLM APIs

GitHub Actions

Job description

Job Description:

Job Title: Technical Lead

Experience: 8–12 Years

Location: Guindy / OMR, Chennai

Work Mode: Work from Office - 5 Days a Week

Joining Preference: Immediate Joiners Preferred

About The Role

We are hiring an experienced Technical Lead to lead the engineering of an enterprise SaaS product built using agentic AI and large language models.

The selected professional will own the technical architecture, establish engineering standards, guide the backend engineering team and remain hands‑on with the most critical areas of the platform.

Key Responsibilities

• Own the end‑to‑end technical architecture and convert it into a practical delivery roadmap.
• Lead the design of scalable backend services, APIs and data models.
• Architect AI integration layers covering LLM provider abstraction, prompt versioning, caching, fallback mechanisms and cost control.
• Design agentic AI systems involving orchestration, tool use, structured outputs and reliability guardrails.
• Define integration frameworks for enterprise systems, databases and third‑party APIs.
• Drive multi‑tenant architecture, access control, auditing and compliance readiness.
• Establish engineering standards for testing, CI/CD, code reviews and technical documentation.
• Mentor engineers, conduct design reviews and strengthen the team’s technical capabilities.
• Remain hands‑on and develop code for critical components of the platform.

Technical Stack

• Python
• FastAPI
• PostgreSQL
• MongoDB
• Redis
• Docker
• Kubernetes
• Pydantic
• MinIO/S3
• LLM APIs
• OpenTelemetry
• Prometheus
• Grafana
• Git
• GitHub Actions

Required Experience And Skills

• 8–12 years of relevant software engineering experience.
• Experience leading backend engineering teams of five or more engineers through system design, development and delivery.
• Proven experience architecting and delivering multi-service platforms with clearly defined domain boundaries.
• Deep expertise in Python, asynchronous programming patterns, FastAPI or equivalent frameworks and production‑scale backend development.
• Strong experience with PostgreSQL and MongoDB, including database design, optimisation and large‑scale migrations.
• Experience building production systems using LLMs, agentic AI or AI orchestration frameworks.
• Practical experience with RAG, vector databases or semantic search in production environments.
• Hands‑on experience with Docker, Kubernetes and AWS or Azure cloud infrastructure.
• Experience designing multi‑tenant SaaS platforms with tenant isolation, RBAC and tenant‑specific configuration.
• Strong understanding of event‑driven architecture, message buses, asynchronous workers and webhooks.
• Experience designing versioned and documented APIs and data models used across multiple teams.
• Ability to lead by example and maintain strong coding and engineering standards.

Why Join

This is a founding technical leadership opportunity within an early‑stage product with a long‑term roadmap. You will play a central role in shaping the platform architecture, engineering culture and technical team.

The role offers an opportunity to build a substantial enterprise product and grow towards a Principal Engineer or Staff Engineer position as the organisation scales.