Founding Product Engineer

Founding Product Engineer | Fintech | Full-Stack | React | | TypeScript | AWS | Sydney

Salary:
A$190K–A$240K + Strong Equity

Location: Hybrid or Remote (Australia/Sydney, New Zealand, Singapore – Happy working AU hours)

Required Tech Stack:
React, React Native, , and TypeScript.
(non negotiable)

Please only apply if you have the following;

• 5+ years of full-stack engineering experience in product-focused environments.
• Background in consumer-facing applications or fintech
• Cool working AUS work hours
• Experience in early-stage startups or building 0 → 1 systems.
• Strong fluency with React, , and TypeScript.
• Familiarity with AI tools for code efficiency and product enhancement.
• Experience with AWS or Google Cloud deployments

Overview

Optimal have partnered with a truly exciting, high growth fintech scale up in Australia. This venture backed company is reshaping how customers interact with complex financial products, using technology to make the experience more intuitive, transparent and customer first.

They are looking for Senior Product Engineers to join their expanding team. This is an opportunity to join a fast paced startup that values end to end ownership, modern engineering practices and a high bar for product excellence. Engineers work across the full stack, from architecture and design through to release, measurement and impact.

You will be part of a team that is building products with global reach, working closely with product and design to deliver meaningful outcomes. The environment is collaborative, ambitious and focused on creating technology that makes a real difference.

This is a chance to join a company with strong backing, rapid growth and a mission to simplify finance for millions of people. If you are ready to take ownership, build at scale and grow with a world class team, this is the role for you.

What You'll Do

• Own projects end-to-end - from shaping requirements to delivery, monitoring, and iteration.
• Build user-centric, data-driven products that simplify complex processes.
• Develop, test, and optimise features across
  React, React Native, , and TypeScript
  .
• Design monitoring, alerting, and testing strategies across multiple product surfaces.
• Work with cross-functional teams - including design, product, and leadership - to deliver high-quality, measurable outcomes.
• Continuously refine development processes and tooling to boost engineering velocity.
• Integrate emerging technologies and AI-assisted workflows to enhance efficiency.

You'll Bring

• 5+ years' experience building scalable full-stack products at
  early-stage startups or very fast-moving tech environments
  .
• Expertise with React, , TypeScript, and strong backend/API design skills.
• Experience deploying to AWS or GCP environments using IaC (Terraform, CDK, etc.).
• Proven track record with automated testing tools like Playwright, Jest, or Vitest.
  (Very nice to have)
• Comfort working in high-ownership, low-process environments - autonomy is key.
• Strong communication and product mindset - you think beyond code and care about outcomes.
• Ability to work effectively during Australian business hours if remote.

Must Have

• Experience with
  React Native
  .
• Exposure to
  AI tooling
  ,
  code assistants
  , or workflow optimisation.
• Background in
  consumer-facing applications
  or
  fintech.
• Previous
  founding engineer
  or
  0→1 startup
  experience.

Why Join

• Join a
  venture-backed fintech
  that's scaling rapidly and building meaningful technology.
• Collaborate with an elite team of engineers, designers, and product thinkers.
• Work with a clean, modern tech stack (React, , TypeScript, AWS).
• Clear
  career acceleration
  opportunities - direct ownership, small teams, real impact.
• Strong
  equity package
  in a company with validated growth and traction.

Apply now if you want to work for a fast‑moving fintech where strong equity, modern tech, and a world‑class team give you the chance to build something truly career‑defining.