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The Onset

Senior Fullstack Engineer (Node.js, TypeScript)

The Onset
Australia · Full-time · Mid-Senior

Job Description

Imagine joining a team building the backbone of a platform that’s redefining how global enterprises manage their most complex workflows - from intake through to reporting and insights.

You’d be joining a business with serious backing from Australia’s top investors that is scaling fast. After strong traction across Asia and the US, they’re now doubling down on enterprise scale - and looking for a senior engineer to help architect that next evolution.

The product is already in-market and growing fast; now it’s about reimagining its architecture to handle the scale and sophistication of large enterprise clients. This is a rare chance to get in at the inflection point - helping design the systems, subsystems, and patterns that will power the next chapter of the platform.

What’s in it for you?

  • Shape the architecture - take a core role in evolving an MVP into a scalable, enterprise-grade platform.
  • Own key subsystems - design and implement modules for task management, calendar, search, and document retention.
  • Real technical depth - build in a backend-heavy TypeScript stack using Node.js, Postgres, Redis, and AWS.
  • Autonomy and impact - work directly with a technical lead who values ownership, clarity, and thoughtful decision-making.
  • Cross-functional collaboration - partner closely with product and data teams to define and deliver features that customers love.
  • Modern engineering culture - Kanban over ceremony, async-first communication, and hybrid flexibility with a fun, grounded team.
  • Flexible and rewarding - hybrid work, learning & development budget, generous equity, and overseas company retreats!


About You

  • Experienced backend-leaning full stack engineer with solid fundamentals in TypeScript + Node.js
  • Confident in system design and architecture, especially scaling and migrating live systems
  • Strong communicator - clear, structured, and comfortable collaborating across teams
  • Thrive in ownership-heavy environments where you help shape both the product and the tech
  • Balanced mindset - understand trade-offs, clarify before building, and always think about the “why” behind what you’re building
  • Bonus: exposure to multi-tenant SaaS, Elastic/OpenSearch, or serverless environments


The stack

  • TypeScript, Node.js, React
  • PostgreSQL, Redis, BullMQ
  • AWS, Serverless (in progress)


Sound like you? Apply now or message Indigo Munro on Linkedin if you’re keen to know more!

Key Skills

Ranked by relevance

typescript serverless redis react saas aws
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Posted
Oct 21, 2025
Type
Full-time
Level
Mid-Senior
Location
Sydney
Company
The Onset

Industries

Staffing Recruiting

Categories

Engineering Information Technology

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