Founding Software Engineer
HAZEL LLC
New York, United States of America
6 days ago
Role details
Contract type
Permanent contract Employment type
Full-time (> 32 hours) Working hours
Regular working hours Languages
English Compensation
$ 200KJob location
New York, United States of America
Tech stack
Query Performance
API
Artificial Intelligence
Database Design
Protocol Buffers
Python
PostgreSQL
Next.js
Shopify
TypeScript
Workflow Management Systems
Chatbots
Tailwind
React
Large Language Models
Prompt Engineering
Stripe
Virtual Agents
Go
Job description
You'll own major pieces of the product end-to-end - from the conversational AI interface to the data integrations that power it. You'll work directly with the founders and customers, ship fast, and have real influence over what we build and how., * Build AI agent workflows - streaming LLM responses, multi-step research with tool use, human-in-the-loop approvals.
- Ship product features across the full stack: React, Typescript / Golang services
- Design and extend integrations with platforms like Shopify, Amazon Ads, and Stripe
- Define service contracts with protobuf and build the infrastructure that connects our services
- Work directly with customers to understand what they need and translate that into product, * You'll build AI products used daily by operators at real brands
- You own features end-to-end; your work ships directly to customers
- Novel technical challenges at the intersection of LLMs, live data, and business decision-making
- Lean team, big ambition, real ownership - both in equity and in how you shape what we're building
Requirements
- Strong software engineer with meaningful startup or high-growth experience
- You've shipped end-to-end products - not just features within a larger system
- High agency - you figure things out, make tradeoffs, and move fast without waiting for permission
- Deep TypeScript experience; comfortable picking up Python or Go as needed
- Solid understanding of database design and query performance (Postgres, DuckDB)
- You care about getting the interface right, not just the API
Bonus Points
- Experience building with LLMs - prompt engineering, tool use, retrieval, agent architectures, skills, mcp, etc.
- E-commerce, consumer, or retail domain knowledge
- Familiarity with workflow orchestration (Temporal, etc.)
Our Stack
TypeScript, React, Tailwind css, Vercel, Go, Python, Protobuf/Buf, PostgreSQL, Temporal, DuckDB/MotherDuck, Render