Head of Engineering (Hands-on)

About GNO
GNO Partners builds the GNO Platform: a suite of tools that helps Amazon sellers optimize their advertising, pricing, and performance. We ingest large volumes of marketplace data daily (Amazon SP-API, Ads API, Amazon Marketing Stream) and turn it into automated bidding optimization, placement management, pricing intelligence, and monitoring that runs while our customers sleep. This is a real data-engineering and product problem, not a CRUD app.
About the role
We're hiring a hands-on engineering leader to run day-to-day delivery so our CTO can focus on architecture and product direction. You'll spend roughly half your time in the code and half running the team: prioritization, planning, 1:1s, and making sure the right things ship at the right quality.
This is a player-coach role. If you've stopped coding, or if you've never managed, this isn't the right fit.
What you'll own
Delivery. Sprint planning, prioritization against business goals, estimates, and unblocking the team daily.
Quality. Code review culture, test discipline, and production reliability of our ingestion pipelines and scheduled jobs.
People. 1:1s, onboarding, growth conversations, and first-round hiring screens as the team scales.
Shipping code. You'll carry meaningful features yourself, especially early on; that's how you'll earn the team's trust.
The CTO retains technical vision, architecture direction, the hiring bar, and infrastructure strategy. You two will work as a pair, not a hierarchy of approvals.
Our stack
TypeScript end to end (strict mode)
Backend: NestJS API, Temporal workflows for data ingestion and background monitoring
Frontend: React, TanStack Router/Query, AG Grid, Tailwind
Data: Postgres (Supabase), AWS data warehouse (Iceberg, Athena)
Integrations: Amazon SP-API, Amazon Ads API, Amazon Marketing Stream
AI: LangChain/LangGraph with LLM-powered features in production
What we're looking for:
7+ years as a software engineer, with 2+ years leading a team of 3-8 while still shipping code
Deep TypeScript/Node.js experience; you can review a NestJS service or a React data grid and give substantive feedback the same day
Experience with data-heavy systems: high-volume ingestion, background job orchestration, or warehouse/analytics pipelines
You've run delivery before: planning, scoping, cutting the right corners, and saying no
Comfortable being the #2 technical voice; you'll challenge the CTO in private and align in public
Nice to have:
Temporal (or similar: Airflow, Step Functions) in production
Amazon marketplace ecosystem experience (SP-API, Ads API, seller tools)
E-commerce, ad-tech, or analytics product background
Experience introducing lightweight process to a team that previously had little
What success looks like in 6 months
Roadmap items ship predictably without the CTO's day-to-day involvement
You've personally shipped features across the API, worker, and frontend
The team knows what they're working on this week and why, and quality has gone up, not down
Hiring Process
Intro call
Technical deep-dive on a real system you built
Paired code review exercise
Team fit conversation
Offer

Work arrangement
Yes