Tech Lead - Backend (AI)

Job Title: Tech Lead - Backend (AI)

Location: Bengaluru

About Us

At Habuild , we’re on a mission to help people build healthier habits and live better lives. With a vision to create a healthier, happier world, we’ve already impacted over 9 million lives through our wellness-driven ecosystem rooted in consistency, discipline, and daily action.

From yoga to mindfulness and fitness, our products and community enable people to unlock their best selves and make well-being a part of everyday life.

One of our flagship initiatives is an AI-powered conversational assistant that uses cutting-edge LLM technology to deliver context-aware, intelligent responses to thousands of users in real-time.

We're not just a startup—we're a movement, and we're growing fast. If you're driven by purpose, passion, and the power of technology to transform lives, Habuild is the place for you.

Role Overview

As a Technical Lead - Backend (AI) , you will lead the architecture, design, and implementation of backend systems that serve millions of users. You’ll work hands-on with the codebase, mentor engineers, and ensure our backend is scalable, performant, and future-ready.

The role demands deep expertise in Python (FastAPI), async programming, and distributed systems, along with strong leadership skills to guide complex projects from concept to deployment. We’re looking for a tinkerer at heart —someone who stays ahead of tech trends, experiments with new tools and ideas, and isn’t afraid to build quick prototypes or side projects to push the boundaries of what’s possible.

Key Responsibilities

• •Foster a culture of continuous learning and knowledge sharing within the team.
• •Posses high knowledge and ability to engineer out of the box solutions for complex problems.
• •Collaborate with cross-functional teams to deliver features that delight users.
• •Own and drive the technical roadmap for core backend systems.
• •Architect and build scalable, fault-tolerant microservices in FastAPI.
• •Design and optimize asynchronous workflows for high-performance API calls.
• •Integrate with vector databases and AI/ML APIs for intelligent, data-driven services.
• •Guide design decisions on system architecture, database schema, and service orchestration.
• •Write high-quality, maintainable code and set coding standards for the team.
• •Mentor engineers, conduct code reviews, and foster a culture of engineering excellence.
• •Ensure system observability, monitoring, and performance optimization.
• •Evaluate and experiment with new technologies, frameworks, and tools.
• •Encourage a culture of innovation through prototyping and hands-on exploration.

Requirements

• •6+ years of backend development experience, with at least relevant experience in AI.
• •Strong hands-on experience with FastAPI (or async-based Python frameworks).
• •Proficiency in async programming (asyncio, asyncpg) and concurrent request handling.
• •Solid knowledge of SQL/NoSQL databases and experience with vector databases.
• •Experience integrating LLM APIs (OpenAI, Anthropic, Mistral, Hugging Face, or similar AI/ML services).
• •Strong understanding of scalable microservices architecture and API design.
• •Familiarity with real-time communication protocols (SSE/WebSockets).
• •Experience with Docker, CI/CD pipelines, and cloud deployment (AWS or similar).
• •Proven leadership ability – mentoring, code reviews, and architecture decision-making.
• •A personal track record of exploring new technologies, building side projects, or contributing to open-source.

Bonus Points

• •Contributions to open-source projects or personal apps in production.
• •Passion for health, mindfulness, or building habit-forming products.

Why Join Us?

• •Lead Critical Systems: Architect backend solutions that power real impact.
• •Mission-Driven Work: Be part of a company that’s transforming lives every single day.
• •High-Ownership Culture: Work with passionate people who thrive on responsibility and growth.
• •Flexibility: Hybrid work model with autonomy and trust.
• •Continuous Learning: A fast-paced, dynamic environment where you can learn and grow every day.
• •Room to Experiment: Freedom to try out new ideas, frameworks, and architectures.

Let’s build something extraordinary—together.