Senior Software Engineer, AI Full Stack

WorkHero; United States; Remote; USD 150,000 - 230,000; Full time

Job summary

WorkHero is building the AI-powered back office for the skilled trades. A senior full-stack engineer will own product experiences and AI systems from React UIs to Node services. You’ll ship features, optimize AI workflows, and collaborate with an expert team in a remote-first setup.

You’ll work across frontend and backend, implement tool-using agents, RAG, and human-review loops, and help scale the platform for HVAC industry needs.

Qualifications

• Experience shipping production full-stack systems you owned.
• Strong React fundamentals and Node.js backend skills.
• Hands-on with LLM-powered features and AI architectures.
• Experience with modern databases and cloud/CI/CD tooling.

Responsibilities

• Analyze requirements and propose AI-native solutions.
• Write clean scalable code across React, React Native and Node.
• Ship full-stack features and optimize AI system performance.
• Mentor teammates and ensure system reliability.

Skills

React fundamentals

Node.js

TypeScript

LLM features

APIs REST/GraphQL

Databases

Tools

Terraform

AWS

CI/CD

MongoDB

Postgres

LangChain

Job description

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.

We’re hiring a senior full-stack engineer to build the product experiences and AI systems at the core of WorkHero—from React and React Native workflows to Node services, tool-using agents, and human-review loops. You’ll own systems end to end alongside a small, senior team with deep experience in AI, product, and the trades.

What you’ll build

You’ll work across the product surface and the AI infrastructure behind it. For example:

• 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

• Integrations & ingestion: pull data from third-party systems (APIs/webhooks/files)

• Evals & monitoring: regression tests for prompts/workflows, quality metrics, drift detection, and cost/latency tracking

• Scalable systems: queues and orchestration, retries, data modeling, and API design to support rapid product iteration

• UX polish and reliability improvements (loading states, edge cases, accessibility, performance)

Responsibilities

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

• Write clean scalable code

• Ship full-stack features across React, React Native (frontend) and Node (API/services)

• Test and deploy features & services, and optimize the performance of our 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 Minimum 4 hours overlap with WorkHero team (11am-3pm ET).

Qualifications

• Experience building and shipping production full-stack systems that you’ve owned

• Strong React fundamentals (or equivalent modern frontend framework experience); React Native a plus

• Strong Node.js backend fundamentals (REST and/or GraphQL) in a typed language (TypeScript preferred), plus comfort working across the stack

• Hands-on experience with LLM-powered features (usage, prompting, optimization, etc), AI frameworks (Langchain, etc), and AI architectures (RAG, reranking, etc)

• Experience building applications on modern databases (MongoDB, Postgres, or equivalent)

• The ability to work with infrastructure as code (terraform), cloud, and CI/CD systems. We’re a small team, so we own the whole stack!

• Excitement to leverage AI coding tools to their maximum benefit. We love Claude Code and Cursor and are constantly looking for better ways to leverage our time to build fast and build for scale.

Nice to have

• experience with audio streaming and/or building AI voice features

• experience with workflow automation tools like n8n or Lindy

• experience with HVAC or back-office business workflows

• experience with mobile dev, especially Expo and/or React Native

• experience specifically with AWS and how to get the most out of key AWS services

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