MAX.Help make accounting autonomous by owning features end-to-end across the platform that delivers real accounting for 1000+ businesses.
Reports to: Founders & CEO
Location: Remote worldwide, or in person in the UK
Type: Full-time
Software should do the work. People should do the judgement.
Accounting software is a $23bn market. Accounting services, the actual work of bookkeeping, tax, compliance and advisory, is $720bn. Thirty times bigger, and still done by hand.
Every generation has moved that work somewhere new: paper, then spreadsheets, then the cloud. Each step made it quicker to record; none made it stop being work. We're building the platform that does it instead, with people in the loop only where judgement genuinely matters. We serve small and mid-sized businesses today.
Software has only ever given accountants a better place to do the work by hand. We're taking out the by hand.
We didn't build software for accounting firms to buy. We own one, and we're automating it from the inside.
Clients don't buy a tool from us and then do their own books. They hire us to do their accounting, and more of that work is done by the platform every month, with qualified people reviewing what matters. The firm is how we reach clients and how we prove the software works. The direction of travel is the software doing nearly all of it.
The product runs all of it: client and lead management, document intake and OCR, invoice and bill processing, an internal double-entry ledger, VAT / MTD / ITSA / CIS compliance, billing, and a client portal. It's deeply integrated with the UK accounting and tax ecosystem, and increasingly driven by AI agents: document extraction, invoice automation, and an in-app assistant.
That structure is why the engineering is different here. We're not shipping a tool and hoping a firm adopts it. We run our own operation on it, so every manual step left in the product is a cost we pay ourselves, and every automation you ship shows up in the business the same week. There's no gap between shipping something and finding out whether it worked.
You'd work on both sides of it: the internal tooling our accountants and bookkeepers work in, and the client-facing product clients log into. This is not a prototype. The firm runs on it today, serving 1000+ businesses, with over £100M in transactions handled and 99.9% uptime. The numbers it produces get filed to HMRC, so correctness is not optional.
You'd be joining a lean team of accountants, bookkeepers, and full-stack software developers, and working closely with the Founders and CEO directly.
That mix is the point. The people who know how UK accounting actually works sit on the team, and our own practice runs on what we ship, so a domain question gets answered in minutes instead of waiting on a spec, and you can watch someone use the feature you deployed this morning. You don't need to arrive knowing any of it. You do need to want to learn it.
What we need is a senior generalist who can own a feature end-to-end, from the UI through the service layer to the external integration and the background job behind it, and ship it to production without hand-holding. You add throughput and a senior voice in architecture reviews.
Roughly balanced frontend and backend: typed React on one side, Python services on the other, with background jobs and third-party integrations in between. You should be comfortable living in any of these on a given day.
Layer What we use Backend Modern typed Python: async web framework, ORM, background workers Frontend React / TypeScript (strict), Tailwind CSS, a component library Mobile iOS and Android apps Data A relational database with versioned migrations, plus a cache Auth A managed auth provider, with atomic RBAC Integrations Accounting platforms (Xero), HMRC (MTD / ITSA / VAT / CIS), Outlook, Gmail, banking data, WhatsApp AI Agent orchestration, tool servers, and tracing Infra Managed cloud hosting, Docker, a monorepo with a service-layer architecture
You do not need every item on this list on day one. You do need to be genuinely strong on one of the Python backend or the typed React frontend, and competent and eager on the other.
What we're looking for The people who do well here don't wait to be handed tickets. You get an outcome and the room to work out the design, the edge cases and everything it takes to get it live, then come back with something better than the brief. What follows is the technical floor, not the job.
This suits people who want a lot of rope. There are few meetings, no ticket queue and nobody tracking your progress. That's freedom if you're self-directed, and uncomfortable if you'd rather be handed a plan.
Send a CV plus a short note on one non-trivial full-stack feature you owned end-to-end: what the product problem was, the design decisions and trade-offs you made across the stack, and how you made sure it was correct. Links to shipped work or code we can look at are worth more than a long CV.
Applications go to careers@usemax.ai.
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