Full-Stack Engineer
Bolna
Software Engineering
Bangalore Rural, Karnataka, India
Posted on Mar 3, 2026
Full-Stack Engineer
Bengaluru (Hybrid)
0 to 1
In office
Full-time
Zero to One Team | Full-time | Bangalore
At Bolna AI, we're building the Voice AI stack that Indian enterprises run in production - 250K+ daily calls, 1,500+ paying customers, 10+ Indian languages, growing at 15% MoM.
We raised $6.3M led by General Catalyst. Now we're doing something different.
We're standing up a Zero to One team: a small, independent unit operating inside Bolna but with a completely fresh mandate - identify the biggest unsolved problems in India's enterprise Voice AI market and build the company that solves them. Not a feature, not a services arm. A new business, built on top of Bolna's platform, infrastructure, and hard-won learnings.
We need the person who builds it technically. The de facto co-founder and CTO of this unit.
Our team is composed of IIT alums having worked at Bain, Atlassian, Zomato and are backed by top investors including General Catalyst.
Responsibilities:
Build whatever the problem demands
- Your technical intuition will shape what's feasible, what's defensible, and what's worth building
- Once the direction is set, you own the full technical stack end-to-end : architecture, build, deployment, iteration
Ship fast and learn faster
- Get working prototypes in front of customers quickly
- Debug failures in real usage, not staging environments
- Make architectural decisions you can defend but are willing to throw away if the problem shifts
Use Bolna's platform as your foundation
- You have access to Bolna's Voice AI stack: multi-language ASR, TTS, LLM orchestration, real-time telephony, 10+ Indian language support
- Build on top of it, extend it, and work directly with Bolna's CTO on the gaps
Operate like a founder, not an engineer
- Take customer calls, understand what they're actually trying to do, and come back with something that works
- Own the technical narrative in customer conversations and with the team
Qualifications:
- 3-6 years of full-stack experience - backend, frontend, infra, you've experienced all of it
- Startup DNA: you've built in environments where requirements come from customers, not tickets
- Fast at picking up new systems, reading docs, and shipping something the same day
- Strong product instinct - you build for the outcome, not the spec
- You want to be a CTO or founder eventually, and understand that the path there is through building real things for real customers
- BONUS: Experience with voice AI, telephony, real-time systems, or LLM pipelines
Why Join:
- Closest thing to a CTO co-founder role with a running start: You have Bolna's full Voice AI platform, infrastructure, and engineering culture behind you from day one
- Build something that could become its own company: If the unit works, this isn't a job you look back on. It's a chapter in a founding story.
- Technical depth that compounds: You'll build for India's most demanding enterprise environments and come out the other side with skills and judgment that are genuinely rare
- Direct mentorship from Prateek Sachan (CTO) and visibility into how a fast-scaling Voice AI company makes hard technical bets
- Founding team seat: Among the first 25 people, meaningful ESOP, and a front-row seat to what Bolna becomes
- Competitive salary + performance upside + meaningful ESOP for early ownership
Req ID: R20