Senior Full Stack Engineer

PARTMAX is a fast-growing B2B online marketplace connecting independent car-part stores with automotive workshops, bringing an industry that still runs heavily offline into a modern, scalable digital platform. We’re already live across VIC, NSW, QLD and WA, and we’re scaling fast. We’re looking for a

Senior Full Stack Engineer

to take ownership of core parts of the platform and help shape what it becomes as we onboard 70–80 new parts stores nationally and expand into new product lines. This is a hands‑on, high‑impact role. You’ll be working across a modern Go / TypeScript / AWS stack, building and evolving systems like vehicle‑to‑part matching, real‑time inventory, trade finance, delivery tracking, and a brand‑new workshop management system that will be central to the business. The opportunity

You’ll be joining PARTMAX at a pivotal point. The platform already powers real customers and real revenue, but there’s huge scope to improve how workshops discover parts, how stores manage inventory, and how the whole ecosystem operates at scale. You’ll work closely with other engineers in a small,. If you like autonomy, responsibility, and being close to both the customer and the code, this role is built for that. What you’ll do

Lead development on key parts of our marketplace and workshop management system Build and evolve domain‑driven services using Go and TypeScript Tackle scaling challenges as we onboard dozens of new parts stores nationwide Improve product discovery, inventory visibility, pricing logic, and data quality Identify gaps and opportunities in the platform and proactively drive solutions Contribute to architectural decisions, ADRs, and long‑term technical direction Work closely with product and customer feedback to solve real user problems What you’ll need

Experience with

Go (Golang)

or the ability and desire to pick it up quickly Experience with

TypeScript

in production systems Comfortable working in

Next.js , AWS, and PostgreSQL‑backed systems Solid system design skills and an appreciation for clean domain boundaries (DDD experience is a plus) The ability to take ownership end‑to‑end and deliver without heavy process Bonus points

Bonus points if you’ve worked in the automotive aftermarket or have experience bringing structured engineering practices from larger organisations into a startup environment. If this sounds interesting, apply here or connect with me, Alex Milligan, on LinkedIn. If your resume isn’t up to date, that’s fine. We can work through it together.

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