Get close to the problem
Start with the people, the business and the constraints. Ask the difficult questions while the decisions are still easy to change.
An independent Australian product lab. We work across strategy, design and engineering, building products for clients and products of our own.
We're Alex and Jack. Product people and engineers who like getting close to a hard problem, then making something useful out of it.
We build products for clients, and products of our own. That keeps us close to what happens after the prototype: the launch, the users, the decisions and the next version.
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Alex brings 20 years of engineering experience across startups, scale-ups and large platforms. He works across product direction and the systems behind the experience.

Jack is a software and security engineer who spent eight years at Amazon and AWS. His work connects product engineering with the security and reliability of the system.
Direct access. Shared context. One accountable team.
Start with the people, the business and the constraints. Ask the difficult questions while the decisions are still easy to change.
Use working prototypes and software to make decisions concrete. Share context and review the next step together.
A product keeps changing after launch. Consider its users, operations and next version while building the first one.
Our own products give us a working view of life after launch: the users, the support, the infrastructure and the next decision.
Alex Berriman and Jack Willis-Craig founded Banja in 2025. The lab brings product thinking, design and engineering together.
North Sydney, NSW, Australia. We work with founders and operators across Australia and beyond.
Yes. We keep the brief, decisions and working software close to the team doing the work. The engagement defines how we collaborate and review progress.
Yes. Our own products include Boosta, Cardvark and mixxi. Building and operating products keeps us close to the decisions that follow a launch.
Bring the idea, the problem or the part you haven’t figured out yet.