Early Engineer (Product / Full-stack)

Overjoy; New York (NY); Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

Competitive salary & equity

Health, dental, and vision (US)

Free lunch & dinner

Equipment budget

Job summary

Overjoy is building Sales AI for B2B commerce. We’re hiring a Product Engineer to work across the stack, solve hard technical problems, and ship product at scale. You’ll join a small, fast-moving team, work closely with the founders, and ship real product from day one.

This is a high-impact, zero-to-one role: you’ll be a core member of our product & engineering team. We’ve doubled revenue recently and are scaling infrastructure, integrations, and AI-driven product experiences powered by AI, with

Qualifications

• 2+ years of software engineering experience.
• Own projects end-to-end — from scoping to implementation to deployment.
• Fluent in at least one major backend or frontend stack (Python/FastAPI, Postgres, or React/TypeScript).

Responsibilities

• Solve challenging technical problems in data pipelines, AI-driven workflows, and system scalability.
• Design, implement, and deploy features end-to-end across the stack (Python/FastAPI backend, Postgres, React/TypeScript frontend).
• Architect and maintain REST APIs for CRM, Inbox, Campaigns, and Automations.
• Build production-level AI Agents using LangChain and state-of-the-art models that run critical workflows for customers.

Skills

2+ years

End-to-end ownership

Backend or frontend stack

Tools

LangChain

OpenAI models

Claude

Job description

About Us

Overjoy is building Sales AI for B2B commerce. Our mission is to enable 10x sales teams by bringing modern software and AI to a long-underserved industry: B2B sales for consumer brands.

Over 800 modern brands like Tipsy Elves, P.F. Candle Co., and David Protein use Overjoy to find new prospects, run outreach, manage accounts, and scale wholesale revenue.

We're backed by Bessemer, OSV, Floodgate and founders of Thumbtack, Alloy, and Unsupervised — and 6 of our own customers invested after using the product.

The Role

We’re hiring a Product Engineer — someone who’s excited to work across the stack, solve hard technical problems, and ship product at scale. You’ll join a small, fast-moving team, work closely with the founders, and ship real product from day one. This is a high-impact, zero-to-one role: you’ll be a core member of our product & engineering team.

We’ve doubled revenue in the past 3 months and are on track to grow faster — and with that growth comes a need to scale infrastructure, expand integrations, and invent new product experiences powered by AI.

What you’ll work on

• Solve challenging technical problems in areas like data pipelines, AI-driven workflows, and system scalability

• Design, implement, and deploy features end-to-end across the stack (Python/FastAPI backend, Postgres, React/TypeScript frontend)

• Architect and maintain REST APIs for CRM, Inbox, Campaigns, and Automations

• Build production-level AI Agents using LangChain and state-of-the-art models (OpenAI, Claude, open-source) that run critical workflows for our customers

• Manage integrations with platforms like Shopify, Faire, WooCommerce, QuickBooks, and Gmail

• Scale our deployment infrastructure (Docker, Google App Engine, GCP)

• Debug production issues, support our customer team, and shape product direction directly with founders and design

You might be a fit if you

• Have 2+ years of software engineering experience

• Can own projects end-to-end — from scoping to implementation to deployment

• Are fluent in at least one major backend or frontend stack (Python/FastAPI, Postgres, or React/TypeScript) and excited to learn the rest

• Write clean, maintainable code and balance speed with long-term quality

• Thrive in early-stage environments where you wear multiple hats and drive your own roadmap

Why Overjoy?

Build for a real problem in a wildly underserved market. Brand founders with multiple exits tell us, "I wish I had Overjoy when I launched my first brand." We're bringing modern software to a part of commerce that's been overlooked for too long.

AI that actually gets used daily. Our customers use our AI features daily for lead gen and outreach, and we're building toward agents that do far more — from processing orders to engaging customers to scoring pipelines.

You'll shape how we build. We're past searching for product-market fit — now we're building the foundations under it. You'll define how we do backend architecture, code review, and reliability, and those standards will compound for years.

Our customers love us. We work with hundreds of small and mid-sized brands — startups in their own right — and build closely with them for their very specific needs. When you solve pain points nobody else has touched, the love is loud and frequent.

Why You Shouldn't Join

This isn't a 9-to-5 job. We're doing hard things with a small team, and it's intense. We won't sugarcoat that.

The autonomy cuts both ways. You'll identify architectural risks, make the calls, and own being right or wrong about them. That can be exciting, but also stressful — and it's not for everyone.

You'll wear a lot of hats. One day you're reviewing a teammate's PR and re-architecting an ingestion pipeline. The next you're debugging a production incident, tuning a database, and improving CI. If you prefer a narrow, clearly-bounded role, this might not be the right environment.

Perks & Benefits

• Competitive salary + meaningful equity

• Health, dental, and vision insurance (U.S.)

• Free lunch & dinner around the office

• Generous budget for laptops, monitors, and other equipment