---
title: 'Senior/Principal Machine Learning Engineer - NZ at Harrison.ai'
canonical: 'https://feeny.ai/job/senior-principal-machine-learning-engineer-nz-harrison-ai-new-zealand-cvfz5ph90g1d'
type: 'job'
last_seen: '2026-09-08'
---

# Senior/Principal Machine Learning Engineer - NZ at Harrison.ai

- **Company:** Harrison.ai
- **Location:** New Zealand
- **Employment:** full-time
- **Posted:** 2026-07-08
- **Last confirmed live:** 2026-09-08
- **Apply:** https://jobs.ashbyhq.com/harrison.ai/98949834-60e9-42d0-974c-eacebfd921ba

## Job description

## WHAT WE’RE ABOUT

At Harrison.ai http://Harrison.ai, we’re redefining what’s possible in healthcare. Through our diagnostic AI solutions, we’re building tools that support clinicians to deliver earlier, more accurate diagnoses and raise the standard of care for millions of patients worldwide.

Our mission is bold but simple: to scale global healthcare capacity and create a fairer, healthier world. By using AI as a co-pilot for clinicians, we’re tackling one of healthcare’s biggest challenges, the shortage of human expertise, and giving every patient the chance to access timely, high-quality care, no matter where they live.

Because while we’re building cutting-edge AI, what we’re really building is hope—that everyone can access the healthcare they deserve.

And we’re just getting started.

## ABOUT YOUR ROLE

Reporting to the Head of AI Engineering, the Senior/Principal ML Engineer translates the latest advances in artificial intelligence, including foundation models and self-supervised learning, into AI-as-a-medical-device products. Our AI Engineers work in dynamic teams alongside Software Developers, Testers, Cloud DevOps and Integration Engineers. We're looking for a self-starter whose passion for learning shows in the adoption of new tools and best practice. As part of our R&D team, we offer the unique opportunity to make a direct, meaningful impact on the lives of patients and their families.

## WHAT YOU'LL DO:

- Develop AI algorithms, prototypes and solutions for healthcare, with a focus on foundation models and self-supervised learning;
- Optimise models and training pipelines for accuracy, scale and rapid experimentation;
- Follow agile methodology and software engineering best practice, focussing on test-driven development, rapid prototyping, validation and iteration;
- Provide regular technical and other progress reports relevant to projects, and ensure all progression is properly documented;
- Engage with the literature to benchmark against and adopt state-of-the-art techniques and algorithms;
- Rigorously evaluate generative AI models, and partner closely with teams training models at scale; and
- Contribute to a culture of excellence, helping to solve problems as they arise, instil a culture of best practice, integrity and agility, as well as champion the Harrison mission internally and externally.

## WHAT YOU'LL BRING:

- Extensive experience in an ML engineering or applied research role, working closely with software development teams;
- Extensive experience with Python and modern deep learning frameworks such as PyTorch;
- Hands-on experience building foundation models and self-supervised learning methods;
- Honours or higher academic qualification in computer science, and/or strong quantitative grounding and equivalent software engineering work experience; and
- Experience evaluating generative AI models and partnering with model training at scale.

Nice to have skills and characteristics:

- Experience with healthcare data and solutions;
- Practical experience in building, deploying and testing ML models in a product development context using software engineering best practices;
- Experience with large-scale distributed training, AWS cloud development, and/or computer vision and natural language processing;
- Experience with a range of AI tools and techniques;
- PhD in ML or equivalent research experience; and
- Publications or open-source contributions in foundation models, self-supervised learning or generative AI.

WHY JOIN US?

🌍 Innovate for Global Good. Join us to pioneer world-first AI technology that transforms patient outcomes and helps build a healthier, fairer world.

🤝 Collaboration Across Continents. Work with brilliant minds from every corner of the globe in a culture built on trust, autonomy, and genuine teamwork.

🚀 Well-Funded & Global. Backed by world-class investors including Aware Super, Blackbird Ventures, Skip Capital, and Horizons Ventures, we’ve raised over US$240M to accelerate our global impact.

🌱 Scale Your Potential. Tap into yearly L&D budgets, mentoring, hackathons, and secondments—all supported by a transparent growth framework to grow your career.

💻Flex for Life. Work when and where you do your best—with WFH options, flexible hours, and the autonomy to make an impact your way.

🙌 Support for Every Family Journey. From fertility to parenthood, loss, and even grandparenthood—we provide inclusive, thoughtful policies to support families in every stage.

WHAT'S NEXT?

If you’re inspired by what we're up to, please apply now and we'll be in touch soon.

We are proud to be an Equal Opportunity Employer. Diversity’s not a buzzword here, it’s in our DNA. Diverse perspectives shape our culture and make our work better. We’re committed to building inclusive teams that represent a variety of backgrounds and skills. We look forward to hearing from you.

## About Harrison.ai

## Company Overview
- **One-liner**: Harrison.ai develops AI-driven diagnostic decision-support tools for radiology and pathology to help clinicians detect medical findings faster and more accurately.
- **Entity Type**: Private (Series C – raised US$112 million in a May 2025 round)
- **Headquarters**: Sydney, New South Wales, Australia
- **Founded**: 2018
- **Founders**: Dr Aengus Tran and Dimitry Tran

## Core Business
- **Industry**: Healthcare AI / Medical Imaging
- **Target Customers**: B2B – hospitals, radiology clinics, public health systems (e.g., NHS, Hong Kong public A&E departments)
- **Mission**: “Unlocking infinite medical capacity” – using AI to address the critical shortage of human expertise in diagnosis and treatment.

## Products & Services
- **Harrison.ai CT Brain**: Decision-support AI for non-contrast head CT studies; detects up to 130 findings in under 90 seconds.
- **Harrison.ai Chest X-ray**: Decision-support AI for chest X-rays; detects up to 124 findings in under 20 seconds.
- **Harrison.ai CT Chest**: Decision-support AI for chest CT; detects up to 167 radiological features.
- **Harrison.Rad1**: The world’s most capable radiology-specific vision language model (launched 2025).
- **Pathology Solution**: AI-powered workflow optimisation and diagnostic support for pathology teams.

## Market Standing
- **Valuation / Market Cap**: Not disclosed
- **Key Metric**: Total funding raised exceeds **US$240 million** (as of 2025)
- **Notable Investors/Partners**: Backed by world-class global investors (specific names not publicly listed in provided sources)
- **Growth Signals**:
  - Clinically deployed at **1,000+ sites** across four continents
  - **3,400+ clinicians** use Harrison.ai solutions
  - **6.7 million+** medical imaging cases analysed
  - Regulatory clearance in **40+ countries**
  - **100%** of public Accident & Emergency departments in Hong Kong use Harrison.ai
  - **45+ NHS Trusts** in the UK use Harrison.ai
  - **>35%** of all chest X-rays in NHS England are processed with Harrison CXR
  - **50%** of Australian radiologists have access to Harrison.ai technology

## Competitive Advantages
- Solutions are built by practicing clinicians, ensuring clinical relevance and safety.
- Deep integration into existing clinical workflows with regulatory clearance in 40+ countries and a distribution network across 15 countries.
- High accuracy and speed (e.g., detects 130 findings in under 90 seconds for head CT).
- Large and growing dataset (6.7M+ cases) that continuously improves AI models.
- Strong adoption in major public health systems (Hong Kong, NHS, Australia).

## Strategic Focus
- Expanding global footprint (already in Australia, Asia, Europe, and the US).
- Broadening product portfolio: new CT Chest and pathology solutions, plus foundational model (Harrison.Rad1).
- Deepening partnerships with healthcare organisations to improve patient outcomes and clinician efficiency.
- Continuing to scale the team and technology to address the global shortage of radiologists.

## Why Work Here
- **Flexibility**: “Flex for life” – unlimited work-from-home and flexible hours.
- **Culture**: Inclusive, supportive, high-trust environment with a focus on collaboration across continents.
- **Growth**: Annual learning & development budgets, mentoring, hackathons, and clear career paths.
- **Benefits**: Comprehensive parental leave and wellbeing support covering fertility, parenthood, and beyond.
- **Impact**: Work on AI that directly improves patient care and health equity, with a mission to positively impact millions of lives.
- **Stability**: Well-funded (US$240M+ raised) with a global footprint, offering long-term career stability.

## Sources
1. [harrison.ai](https://harrison.ai/)
2. [harrison.ai/about-us](https://harrison.ai/about-us/)
3. [harrison.ai/life-at-harrison](https://harrison.ai/life-at-harrison/)
4. [harrison.ai/careers](https://harrison.ai/careers/)
5. [cbinsights.com](https://www.cbinsights.com/company/harrisonai)

## Other roles at Harrison.ai

- [Finance Manager | USA](https://feeny.ai/job/finance-manager-usa-harrison-ai-united-states-qm309r25brvr) — United States
- [Finance Manager | California](https://feeny.ai/job/finance-manager-california-harrison-ai-california-bkn6r9tvb9sk) — California, United States
- [Senior Financial Analyst](https://feeny.ai/job/senior-financial-analyst-harrison-ai-sydney-1aq5jesdb42y) — Sydney, Australia
- [Support Engineer | Teleradiology](https://feeny.ai/job/support-engineer-teleradiology-harrison-ai-united-states-qckb8m6nazqy) — United States
- [Customer Deployment Engineer | Radiology | India](https://feeny.ai/job/customer-deployment-engineer-radiology-india-harrison-ai-india-2n3xfjtabbwm) — India
- [Customer Deployment Engineer | Radiology | Western Australia](https://feeny.ai/job/customer-deployment-engineer-radiology-western-australia-harrison-ai-perth-ssb8455z04v3) — Perth, Australia
- [Customer Success Manager (Radiology)](https://feeny.ai/job/customer-success-manager-radiology-harrison-ai-saudi-arabia-2jm5m7afcks0) — Saudi Arabia
- [Senior/Principal Machine Learning Engineer - Aus](https://feeny.ai/job/senior-principal-machine-learning-engineer-aus-harrison-ai-sydney-kj4h5amgmp8c) — Sydney, Australia