Senior Fullstack Engineer

We’re building an AI-first delivery system where agents ship product features end-to-end, and engineers build the platform (the harness) that makes it safe, reliable, and scalable. This is a hands-on delivery role with a focus on shipping product features.

Your day to day:

• Design and build robust, scalable solutions for complex problems, balancing performance, maintainability, and delivery speed
• Design and implement agentic workflows that take a requirement from spec → code → review → deploy
• Produce clean, well-tested, maintainable code across our TypeScript/React/Node stack
• Use AI coding agent tooling as part of your day-to-day workflow
• Suggest and implement process or technical improvements that make the team more effectiv

What We're Looking For

• Strong fullstack engineering ability. You can design and ship robust, scalable systems, not just features to a spec. You think about maintainability and trade-offs as you go.
• Genuine delivery orientation. You want to be shipping product, working closely with a small team, and taking ownership of outcomes rather than just tickets.

What we need from you

• Must have advanced knowledge of TypeScript, JavaScript, React, SQL, and Node.js
• Experience building large-scale software applications in production
• You can read a codebase and quickly identify its patterns, conventions, and architecture
• You are comfortable working in ambiguity and turning fuzzy intent into clear acceptance criteria + evals
• Experience with unit/integration testing
• Experience with AWS services or similar cloud infrastructure
• Familiarity with agent tooling concepts: tool calling, MCP/tool integration, guardrails, evals, tracing/observability, and permissioning

Read this before you apply

You'll thrive here if you want a senior individual-contributor role with real autonomy, enjoy shipping product end-to-end, and like the idea of using AI tooling to work faster and smarter.

It's not the right fit if you prefer stable scope, established best practices, and minimal ambiguity.

Compensation for this role is $140k–$160k + Super + ESOP. This role requires candidates to have full Australian Work Rights and you must be located in Australia.

We're guided by trust, respect, and ownership. Our values, Embrace Change, Carte Blanche, Find Wisdom in Data, and We All "Own It", shape how we work.

• We're fully remote, so you can work from anywhere in Australia
• 5 weeks annual leave and flexible working - we believe in balance
• Monthly "Wellness Budget" to help you stay healthy, mentally & physically
• Employee share options (ESOP) for all team members - we truly all "own it"

How to apply?

To start your application with us, submit your CV via the application form. Note that background checks are required as part of our offer process.

We welcome applications from all backgrounds, abilities, and identities. We value diversity and believe that it enhances our creativity, innovation, and overall success. Join us in creating a workplace where everyone can thrive.

Managing business expenses shouldn't be a guessing game. Yet many SMEs still lack clear cash flow visibility and spend control. At Budgetly, we're changing that.

We're building an AI-first platform that simplifies expense management and helps businesses make better financial decisions, faster. The goal is simple: help you spend smarter, save time, and grow profitably.

This role is part of a small fully remote team, reporting to the Team Lead with a light-touch structure — you own your lane and outcomes directly and are trusted to deliver. We're going all-in on AI-enabled workflows across the business, and this role plays directly into that, shipping product features while helping raise the bar on engineering quality and practice.