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Hiring: Full-Time AI Automation Engineer (Voice AI & Middleware Integration) - Remote
About the Client
AI voice employees for the trades – Delivers 24/7 AI voice agents that answer calls and texts, capture qualified leads, and book jobs for home-service contractors.
Built for HVAC, plumbing & electrical businesses – Solves the daily pain points trade owners know too well: missed calls, empty trucks, and slow seasons.
By operators, for operators – Practical AI and automation designed around how contractors actually work, not generic enterprise tech.
Backed by 20+ years of HVAC industry relationships – With major preferred-vendor partnerships rolling out in 2027, the growth runway is real.
Lean, high-trust, fast-moving team – A founder-led company where your work ships fast and your ideas shape the product.
A ground-floor opportunity – Join as the first in-house technical hire and help build the foundation for everything that comes next.
About WeAssist
Led by a Founder Who Cares – Reef Colman built WeAssist to empower individuals and create meaningful opportunities that support families.
Fast & Purposeful Recruiting – We move quickly but prioritize long-term fit, stability, and growth over just filling roles.
Connecting Global Talent – With 100+ outsourced professionals and growing, we link top talent worldwide with thriving US businesses.
Giving Back Matters – From building schools to feeding the homeless, we believe true success means making a difference.
An Inclusive & Thriving Culture – Your skills and unique gifts matter. We create an environment where outsourced professionals don't just work—they grow.
Key Responsibilities of the AI Automation Engineer
Middleware & Field Service Platform Integrations
Voice AI Agent Engineering & Tuning
Omnichannel & Back-Office Automation
Client Onboarding & Technical Support
Internal Operations, Process Automation & SOPs
Data Security & Credential Management
Additional Information:
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Why Are They Hiring an AI Automation Engineer (Voice AI & Middleware Integration)?
Our client is hiring an AI Automation Engineer to bring all technical development, deployment, and fulfillment fully in-house, replacing a third-party agency that currently handles it. You'll build and own the custom middleware that connects AI voice platforms (Vapi, Retell, Assistable within GoHighLevel) to field service management systems like ServiceTitan and Housecall Pro, so live phone conversations turn into accurate, booked jobs on a contractor's dispatch board. Beyond the build, your mission is reliability: proactively testing and monitoring voice agents so contractors get zero downtime and high booking accuracy, documenting the systems in clear SOPs, and laying the technical groundwork for upcoming enterprise industry partnerships in 2027. This is a hands-on, high-ownership role where you'll work directly with the founder and grow into technical leadership as the team expands.
If you're a proactive, code-first engineer who loves building voice agents and integrations that actually work in the real world, and you take pride in systems that never miss a call—this role could be a great fit for you.
Qualifications:
Must-Haves:
Voice AI Agent Experience – Hands-on experience building and deploying production voice agents with Vapi, Retell, Assistable, and/or ElevenLabs, including prompt tuning, latency optimization, and knowledge base design.
Real Coding Skills – Strong JavaScript and/or TypeScript; you write, review, and debug your own code (no "vibe coding"). Comfort reading .NET / C# / C++ environments is a big plus.
APIs, Middleware & Integrations – Proven experience building middleware and integrations using REST APIs, OAuth, webhooks, and SDKs.
GoHighLevel Expertise – Solid experience building workflows, automations, and sub-account setups in GoHighLevel (GHL).
Automation & Agent Frameworks – Experience with n8n, Hermes Agents, Composio, OpenClaw, or similar automation and agentic AI platforms.
Security-Minded – Solid grasp of API security, data privacy, credential vaults, VPNs, and VPS hosting.
Clear Communication & Ownership – Fluent written and spoken English, comfortable supporting clients directly, and able to work independently without constant supervision.
Nice-to-Haves:
Field Service Management Experience – Direct experience with ServiceTitan or Housecall Pro, or with home service trades (HVAC, plumbing, electrical).
Advanced AI Concepts – Familiarity with RAG, MCP, and vector databases.
Web & Marketing Tech – Website builders, hosting, landing pages, Google Business Profile, and AEO/SEO automation.
Software Engineering Background – Software engineers or full-stack developers who have moved into AI automation and voice agents are an ideal match.
Responsibilities of the AI Automation Engineer (Voice AI & Middleware Integration):
Your responsibilities include:
Middleware & Field Service Platform Integrations
Build and maintain custom middleware connecting AI voice platforms (Vapi, Retell, Assistable within GoHighLevel) to Field Service Management (FSM) systems
Integrate with platforms like ServiceTitan and Housecall Pro using REST APIs and OAuth
Write integration logic that interfaces with .NET / C# / C++ backend environments
Program and verify end-to-end booking workflows that move live voice conversations straight into contractor dispatch schedules
Monitor, diagnose, and resolve sync issues such as duplicate bookings, dropped data payloads, or failed scheduling attempts
Code, review, and debug custom application logic in JavaScript and/or TypeScript
Voice AI Agent Engineering & Tuning
Build, configure, and maintain production-grade voice agents using Vapi, Retell, Assistable, and ElevenLabs
Fine-tune latency, test prompt frameworks, design agent harnesses, and curate dynamic knowledge bases
Architect multi-step decision trees and parent-child logic (e.g., distinguishing a tenant from a commercial property manager during an emergency call)
Run automated tests on conversational accuracy, speech recognition, and intent categorization to catch bugs before clients do
Keep after-hours call answering and emergency dispatch agents running reliably
Omnichannel & Back-Office Automation
Build and manage GoHighLevel workflows across SMS, email, appointment reminders, and estimate follow-up campaigns
Implement automations using platforms such as Hermes, OpenClaw, Composio, and n8n
Build AI agents that securely log into third-party portals to complete repetitive contractor admin tasks
Help build, test, and deploy company-wide automation packages for beta client accounts
Client Onboarding & Technical Support
Join technical onboarding calls with new clients to gather system requirements, parameters, and integration details
Execute full client setup and integration during a typical two-month implementation window
Connect client information to their respective GoHighLevel sub-accounts
Proactively verify that client systems, credentials, and automations stay active, secure, and up to date
Handle technical support and troubleshooting when clients report issues
Escalate and resolve platform bugs directly with SaaS vendor support teams (including GoHighLevel)
Build client-facing and internal dashboards tracking voice minutes, booking volume, and system activity
Internal Operations, Process Automation & SOPs
Configure internal GoHighLevel automations (e.g., sending service agreements after payment, kicking off projects when documents are signed)
Document technical architectures and create SOPs for internal team execution
Recommend technical solutions and collaborate with the founder on system design
Work alongside the current fulfillment agency during a short overlap period to absorb existing workflows and system logic before taking full ownership
Data Security & Credential Management
Enforce data privacy, API security, and protection protocols for client records and