Job Description :

Procedure is hiring for WorkHero.

WorkHero is building the AI-powered back office for the skilled trades, starting with the $50B+ HVAC industry. Small contractors are great at their trade but lose 20+ hours a week to invoicing, permits, scheduling, and paperwork. WorkHero combines expert office managers with automation and AI tooling, enabling a small team to take real ownership of that back-office work.

Were hiring a senior engineer to own our real-time voice stack end to endAI agents operating on live phone callsand the data platform that turns those calls into insight : call ? transcript ? events ? warehouse ? dashboards. Youll own meaningful systems end to end alongside a small, senior team with deep experience in AI, product, and the trades.

What youll build :

- New product screens and flows (jobs, customers, invoices, scheduling) in React and React Native, especially AI chat UI (chat & tool result rendering, streaming responses, human review and feedback loops).

- AI workflows in production : tool-using agents, RAG/search, classification/extraction, and human-in-the-loop flows.

- Automations : Contribute new features and improvements to our AI-powered business automation platform.

Realtime Voice & Data Pipeline :

- Realtime voice agents on live phone calls : telephony/WebRTC integration, streaming speech-to-text and text-to-speech, turn-taking, interruption handling, and latency optimization.

- Voice pipeline reliability : backpressure, failover, graceful degradation, and monitoring for live calls.

- Call-data pipeline : transcripts, events, and structured extraction flowing from every call into the warehouse.

- Analytics & dashboards : data modeling and conversation-intelligence features on top of call data.

- Evals & monitoring for voice agents : quality metrics, drift detection, and cost/latency tracking.

- Cloud infrastructure : scaling our platform with infrastructure as code, queues and orchestration, and CI/CD.

Responsibilities :

- Analyze requirements and propose innovative AI-native solutions to technical problems.

- Write clean scalable code.

- Own the voice and data stack end-to-end : design, build, test, deploy, and operate.

- Optimize the performance, latency, and cost of our real-time AI systems.

- Respond to critical system issues and ensure continuous system reliability.

- Mentor team members and collaborate across teams, especially with product and subject matter experts.

- Work to understand the needs of our users and think creatively about how to solve design challenges in your work.

- This is a Remote role. We expect a minimum 4 hours overlap with the WorkHero team (11 AM - 3 PM ET).

Qualifications :

- Senior-level backend experience (typically 5+ years) shipping production systems that you've owned.

- Hands-on experience with realtime voice or streaming systems : telephony (SIP/Twilio), WebRTC, streaming STT/TTS, or frameworks like LiveKit or Pipecat or comparable experience with demanding realtime/streaming infrastructure.

- Data engineering fundamentals : event pipelines, data modeling, warehousing, and analytics on production data.

- Strong proficiency in a typed backend language (TypeScript preferred; comparable experience welcome).

- Hands-on experience with LLM-powered features (usage, prompting, optimization, etc) and AI architectures.

- The ability to work with infrastructure as code (terraform), cloud, and CI/CD systems at scale.

- Excitement to leverage AI coding tools to their maximum benefit.

Nice to have :

- Experience with voice-AI platforms (Vapi, Retell, Bland, Deepgram, LiveKit) or conversation-intelligence products.

- Experience scaling cloud infrastructure, especially AWS.

- Experience with workflow automation tools like n8n or Lindy.

- Experience with React for building internal dashboards.

- Experience with HVAC or back-office business workflows.

WorkHero is committed to building a diverse team. We encourage candidates from all backgrounds to apply.