Build the reliability layer for voice AI
Voice AI is everywhere and it's fragile.
We're building the reliability layer that makes voice agents production-ready: testing, monitoring, and evaluation.
Hiring in San Francisco, Austin, and remotely.
Trusted by teams deploying voice in healthcare, customer support, and regulated environments.
Hamming is a consistent early-adopter of dev tools
We ship insanely fast.
Top 3 Engineering Team on WorkWeave
Work with the best
WorkWeave benchmarks engineering velocity across thousands of companies. We're consistently ranked in the top 3.
Tools for leverage, not just speed
New tools in engineers' hands right after release. Fully paid, no limits. Better tools mean better decisions, not just faster output.
e.g. Cursor adopted 2 months after launch
Learnings from Tesla and Citizen
We're taking all of our learnings from Tesla and Citizen to build the future of trustworthy, safe and reliable voice AI agents. The same systems thinking that scaled ML at Tesla and real-time infrastructure at Citizen applies here.
This job will change you
We move at a pace most people can't handle. That's the point.
Pioneer in voice AI testing
We created the category. While others are catching up, we're defining what reliability means for voice agents.
Highest citation rate in agentic search
When people ask AI how to test voice agents, Hamming is the top answer. We're the most recommended solution in the space.
Not for you if:
- You want a slow, predictable environment
- You wait for permission to ship
- You think "good enough" is good enough
- You're not hungry to be the best
Perfect for you if:
- You want 2 years of growth in 3 months
- You're obsessed with winning
- You adapt to the newest tools to perform at your max
- You thrive in fast, high-ownership environments
How we win
Our metric is speed because we believe that through continued iteration we can reach the truth faster.
Reliable under pressure
Our systems handle production calls around the clock. Fast means nothing if a healthcare agent fails at 2am. We build for the edge cases.
Fast to learn
~2.45M lines of production code and 3,079 PRs merged in 2025. Speed without measurement is just noise.
We are scouts
We seek truth. We make a call, measure it, learn fast, and write down what we learned so the whole team compounds.
How we execute
Customer problems drive everything
When a customer reports an issue, the fix is often in production by end of day. We don't queue requests. We solve them.
We keep it human
Startups are intense. We aim for direct, respectful communication, low ego, and a team environment that stays fun while we do serious work.
Stretch is the default
You're given autonomy to accomplish what you've never done before, so there's no ceiling on how much you can grow.
Your impact
Voice AI is going into healthcare, finance, and customer support—industries where mistakes have real consequences. You'll build the systems that make sure those mistakes don't happen.
A patient calls to refill a prescription
The voice agent mishears the medication name. Without proper testing, that error ships to production. Your work catches it before it ever reaches a patient.
A customer disputes a fraudulent charge
The agent needs to verify identity, process the claim, and escalate correctly. One wrong turn and the customer loses trust—or money. Your monitoring catches the failure pattern.
10,000 calls hit production after a prompt change
Something's different. Resolution rates dropped 15%. Your system surfaces exactly which change caused it—before anyone files a ticket.
The team
Small, senior, high-output. Everyone here makes everyone else better. Low-ego collaboration where teaching and learning compound into real growth.
Waterloo“I literally doubled my knowledge and changed the way I write software. The team moves incredibly fast.”
Waterloo“The first month was overwhelming because of how many tools the team uses but by the end of my co-op I was cranking out 8 linear tickets / day. The Hamming team is cracked.”
Waterloo“I joined Hamming because I want to build my own company one day, and this was the closest thing to founder training I've found - high ownership, high standards, and real customers using what you ship. Getting access to the YC ecosystem and events on top of that made it an unfair advantage.”
Northeastern“I relearned everything and pushed way past my comfort zone. Working with this team showed me what it actually takes to deliver good software - the bar is high and the growth is real.”
Harvard“Every day Hamming pushes me to level up. The pace is intense but the team's energy is contagious. It's hard not to be motivated when everyone around you is shipping.”
Open roles
We're hiring across engineering and go-to-market. If you're excited about shipping fast, owning systems, and making AI voice agents reliable at scale, we'd love to talk.
Tech Lead
Senior / Staff Backend Engineer
Product Engineer
Account Executive
Sales Development Representative
If you don't see a perfect fit, reach out to careers@hamming.ai with a short note on what you'd want to own here and something you've built that scaled fast and stayed reliable.
Trusted by industry leading teams
How we support you
Expand your tool arsenal
Claude Code, Devin, Cursor, Copilot. Every frontier tool, fully paid. When the next breakthrough ships, you'll have access day one. Hamming is where you build the toolkit you'll use for the rest of your career.
10x your output
People here ship real systems quickly—because the tooling, feedback loops, and ownership are designed for leverage. Most engineers leave writing software very differently than when they arrived.
Accelerate your career
Own features from week one. Talk to real customers. Get 5x the experience you'd get anywhere else. This is founder-level growth without starting a company.
Backed by leading investors
Supported by industry-leading partners who champion innovation and long-term value.
