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Heidi Logo Heidi · IT - Software Development

Senior Software Engineer (Backend - Commerce Platform)

Australia, Sydney · Job Posted February 18, 2026
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Job Description

Senior Software Engineer responsible for the execution of the backend features, with a deep technical understanding and how it translates to representing user needs. You will have operated in a hyper growth startup with experience building SaaS products. You will also have a deep understanding of the key challenges engineers face and a firm grasp on design principles in prioritizing key features and capabilities. Your superpower is how to bridge the gap between technical specifics and business needs effortlessly and turn high-level designs into real-world solutions. You thrive in challenging situations, and you appreciate the dynamics of a flexible, flat-structured work environment. You are quick to grasp the nuances and complexities of developing an AI product healthcare internationally.

Job Responsibility

  • Build the revenue engine: Own features across our billing platform, payments integration (Stripe), and entitlements service—directly impacting how Heidi monetizes and scales
  • Ship user-facing products: Deliver end-to-end on payment plans, seat management, and subscription UX for individuals and organisations—making self-serve purchasing seamless
  • Drive growth through product: Build upsell flows and upgrade prompts that connect users to plans matching their needs, turning product usage into revenue
  • Work across the stack: Develop both frontend experiences (React/TypeScript) and backend services (Python)—we need engineers who can own a feature from API to UI
  • Grow with a small, high-impact team: Join early and help shape the team—collaborating closely with cross-functional partners as Commerce scales

Requirements

  • Strong full-stack or backend experience (Python & TypeScript preferred)
  • Track record of leading feature delivery independently—scoping, building, and shipping
  • Pragmatic engineering mindset: bias toward done over perfect, iterative over big-bang
  • Experience building user-facing features involving permissions, sharing, or multi-user workflows
  • Effective collaborator who communicates clearly with technical and non-technical stakeholders
  • Comfortable with ambiguity and fast-moving priorities in a growth-stage environment
  • Genuine interest in healthcare and improving how clinical teams deliver care

What we offer

  • Flexible work with 3 days a week in the office
  • Additional paid day off for your birthday and wellness days
  • Special corporate rates at Anytime Fitness for Melbourne, Sydney tbc
  • A generous personal development budget of $500 per annum
  • Learn from some of the best engineers and creatives, joining a diverse team
  • Become an owner, with shares (equity) in the company
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