Harmony is the AI voice venture built inside monday.com. Our agents hold real phone conversations for businesses, and every one of those calls runs through systems we design and build ourselves: real-time audio pipelines, agent orchestration, telephony integrations, and the tools our customers use to build and monitor their agents.
We also work at the frontier of voice AI. We're building evaluation methods and benchmarks for voice agents, measuring what actually makes a phone conversation succeed, and we train and fine-tune our own models alongside the best available ones.
We're a small, senior team with startup speed and monday.com's backing. Engineers here own features end to end, from design through production, and work shoulder to shoulder with AI researchers, turning models into products.
What you'll work on
• Backend services that power live voice conversations: sub-second turn-taking, handling interruptions, thousands of concurrent streams, and staying reliable under load.
• The platform customers use to create, test, and analyze their voice agents.
• Integrations with telephony providers, CRMs, calendars, and the wider monday.com platform.
• Closing the loop between production and research: turning real calls into evals, benchmarks, and training signal for our models.
• Listening to real calls and talking to customers to find where agents fail, then fixing it.
• Observability and performance of everything you ship.
What we're looking for
• 6+ years building and operating production backend systems.
• Strong TypeScript and Node.js, or deep experience in a comparable stack and the will to switch.
• Experience with high-throughput, stateful, or real-time services in production.
• Solid grounding in APIs, databases, and event-driven architectures.
• A product mindset: you care how the agent sounds to the person on the line, not just how the service performs.
• Experience taking products from 0 to 1 in fast-moving, loosely defined environments.
• Curiosity about AI and ML. Hands-on ML experience is a plus, not a requirement.
• Pragmatic: you ship fast and stay rigorous where it matters.
Bonus
• Real-time audio or streaming (WebRTC, media pipelines), or telephony (SIP).
• STT/TTS, voice AI frameworks (e.g. LiveKit, Pipecat), or evals for LLM-powered systems.
Don't check every box? Apply anyway. Strong candidates rarely match a list exactly.
Skills Required
- 6+ years building and operating production backend systems
- Strong TypeScript and Node.js experience, or comparable stack experience with willingness to switch
- Experience with high-throughput, stateful, or real-time production services
- Strong understanding of APIs, databases, and event-driven architectures
- Product mindset focused on customer and agent experience
- Experience taking products from 0 to 1 in fast-moving, loosely defined environments
- Curiosity about AI and machine learning
- Real-time audio, streaming, or telephony experience
- Experience with STT/TTS, voice AI frameworks, or LLM evaluation systems
- Hands-on machine learning experience
What the Team is Saying
monday.com Compensation & Benefits Highlights
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Healthcare Strength — Medical, dental, and vision coverage are described as comprehensive, with added mental‑health resources and wellness support. These offerings are repeatedly highlighted as a strong part of the overall package.
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Parental & Family Support — Paid parental leave for both primary and secondary caregivers, plus adoption assistance and return‑to‑work support, are portrayed as standout benefits. These policies are cited as particularly appealing elements of the program.
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Retirement Support — Automatic employer 401(k) contributions are presented as a meaningful financial benefit for U.S. employees. This is complemented by broader long‑term savings opportunities mentioned alongside the core plan.
monday.com Insights
What We Do
At monday.com, we help teams get more work done. We are the best AI work platform that empowers teams to automate, build, and scale their impact end-to-end with tools that actually execute the work for you. With over $1B in ARR, 250,000+ customers, and a global team, we’re serious about building a product people love to use and giving our employees the same ownership and flexibility to shape the way the world works.
Why Work With Us
At monday.com we believe in transparency, accountability, and impact. Together, those values have lent themselves to create a strong culture of professional and creative autonomy where every team member is encouraged to share ideas and help bring them to life!
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Employees engage in a combination of remote and on-site work.
monday.com embraces a flexible work environment with our hybrid model.
