Tech Lead- Nexa (Conversational Voice AI Platform)

You will be joining Nexa, a new venture by the founders of HeyCoach Pratik Kapasi and Aditya Kamat, with a mission to build the most intuitive voice-first AI platform. Nexa is rethinking how humans interact with machines using natural, intelligent, and fast conversational interfaces. As a Tech Lead at Nexa, you will play a crucial role at the ground level in a high-ownership, high-speed environment for builders who are eager to move fast and go deep. **Role Overview:** - Design, build, and scale backend and full-stack systems for the voice AI engine. - Work primarily with Python for core logic, pipelines, model integration, and support full-stack features using Node.js and React.js. - Lead projects end-to-end, from whiteboard to production deployment. - Optimize systems for performance, scale, and real-time processing. - Collaborate with founders, ML engineers, and designers to rapidly prototype and ship features. - Set engineering best practices, own code quality, and mentor junior team members as the team grows. **Key Responsibilities:** - 4+ years of experience in Python, building scalable production systems. - Leading projects independently from design through deployment. - Executing fast without compromising quality. - Strong foundation in system design, algorithms, and data structures. - Hands-on experience with Node.js and React.js in a production setup. - Deep understanding of backend architecture, APIs, microservices, and data flows. - Proven success working in early-stage startups, especially during scaling phases. - Ability to debug and optimize across the full stack. - High autonomy to break down big problems, prioritize, and deliver without hand-holding. **Qualifications Required:** - Experience with NLP, speech interfaces, or audio processing is a plus. - Familiarity with cloud platforms (GCP/AWS), CI/CD, Docker, Kubernetes would be beneficial. - Contributions to open-source or technical blogs are advantageous. - Prior experience integrating ML models into production systems is preferred. We value: - Speed over perfection, moving fast, shipping early, and iterating. - Ownership mindset, acting like a founder even if you're not one. - Technical depth, having built things from scratch and understanding what's under the hood. - Product intuition, asking if the code solves the user's problem. - Startup muscle, being scrappy, resourceful, and not needing layers of process. - Bias for action, unblocking yourself and others, pushing both code and thinking. - Humility and curiosity, challenging ideas, accepting better ones, and continuously learning. At Nexa, you will have the opportunity to work directly with the founders on a product that pushes boundaries in voice AI. You will be part of the core team shaping the product and tech from day one in a high-trust environment focused on output and impact rather than hours. Additionally, you will experience a flexible work style and a flat, fast culture.,