Software Engineer

Ironbooks Financial is building an AI-powered bookkeeping platform for trades contractors and is looking for its first Full-Stack Engineer. The role involves taking ownership of the platform, improving the existing codebase, ensuring accuracy in bookkeeping, and architecting new features for the product.

Responsibilities:

• Take over the codebase and make it stronger. Not rebuild it. Improve it
• Own our number one priority: every number on a client's books is provably correct
• Own the automation that writes to live QuickBooks ledgers every night: guardrails, idempotency, closed-period safety, and the verification score for every monthly close
• Build our Plaid layer from the ground up
• Build the safety net an AI-built system needs at scale
• Ship fast with AI tools every day, the same way the product was built

Requirements:

• 2-4 years shipping production web apps, with at least one stretch as the primary or only owner of something real users depended on
• You live in Claude Code or Cursor. AI-assisted development is how you work, and you know how to verify what an agent gives you before it touches money
• Full-stack and happy owning everything: frontend, backend, database, integrations, deploys, and the operational grunt work that keeps it all alive
• You care about getting numbers right
• You would rather improve a working system than tear it down to feel comfortable
• Bonus: you know your way around a P&L, or you genuinely want to learn bookkeeping