AI Assisted Engineer

AI Assisted Engineer (Next.js / Medusa)

At Rigby (rigbyjs.com) we build composable eCommerce on Medusa - marketplaces, B2B platforms, storefronts - for clients across the US, UK, EU and the Middle East. We also build Mercur (mercurjs.com), our own open-source marketplace platform.

We don't work like a software house. We built Canso - our own AI-native delivery framework: multi-agent, spec-driven, with a human approving every gate. It does the work a traditional 5-8 person team used to do. Which means one engineer runs a whole project, from kick-off to release.

Not alone, though. A PM handles high-level client communication. A designer delivers the design. Other engineers review your code. The team is there when you hit something you don't know. What's yours is the project - the shape of the solution, the decisions, the deadline.

How you'll work

• Projects run 2-4 months. Medusa / Mercur implementations, marketplaces, storefronts, integrations. Mostly fixed price, sometimes time & material.

• You orchestrate the agentic flow. Canso gives you the structure - spec, plan, tasks, implementation, with a gate at every step. Agents do the volume; you direct them and you decide at each gate: what they got right, what to throw out, what the client actually needs. Underneath it's the tools you already know - Claude Code, Cursor, Copilot. Canso is how we put them to work.

• You know your project's budget and schedule from day one. Project card at kick-off, weekly review on a dashboard. No surprises in either direction.

• You have direct communication with the client - in English. Technical conversations are yours; the PM keeps the rest off your plate.

• Your code gets reviewed by other engineers on the team, and you review theirs.

Apply if you have

• Delivered projects end-to-end. Freelance, your own product, solo contracts - or a small team where you carried real responsibility for the outcome. What matters is that you've owned delivery, not how many years the CV says.

• The ability to see a project whole. You can take a set of requirements, design the solution, and propose an architectural approach on your own - not wait for someone to hand you one.

• Daily AI coding - Claude Code, Cursor, Copilot - with real, working things you built that way. This is the core of the role, not a bonus.

• Strong TypeScript / Node.js and React / Next.js. Comfortable with APIs, integrations, databases.

• English at C1 - you'll be talking to clients directly.

Bonus points for

• Medusa (a big plus), Shopify / Magento / composable commerce

• Experience working inside an AI-native methodology - not just using AI, but a structured way of building with it

• Payments (Stripe), marketplaces

• Freelance experience with direct client contact

• Open source

This isn't for you if

• You need a tech lead to get moving.

• You're an AI sceptic - or all AI hype with nothing built.

• Your CV is only large teams and you've never owned an outcome.

• You treat a deadline as a rough guideline.

What we offer

• 12 000 - 18 000 PLN + VAT (B2B)

• Wrocław (hybrid, our office) preferred - fully remote also works

• Private medical insurance and Multisport card

• Flexible working hours

• ~20 people, international clients, and real influence over how we work - we're building the AI-native delivery model as we go, not inheriting one

Your journey to joining Rigby

1. Intro call (30-45 minutes) - your experience, our model, mutual fit.

2. Technical session (1 hour) - one task in Medusa, live, with full use of AI. Claude Code, Cursor, whatever you actually use.

3. Decision and feedback on your application.