Data Scientist

2 weeks ago

City of Melbourne, Australia Maincode Full time

Overview

Maincode is building Australian-made AI models from the ground up. We train foundation models from scratch, design new reasoning architectures, and deploy them on state-of-the-art GPU clusters. Our data and infrastructure are entirely homegrown, from curation to large-scale training, to ensure independence, transparency, and excellence in model performance.

We’re looking for a Data Scientist to work at the intersection of large-scale data, machine learning, and AI systems. You’ll help source, analyse, and shape the datasets that train next-generation models, working closely with engineers and researchers to make data the backbone of Australia’s AI capability.

This role suits someone with strong data science fundamentals who’s comfortable working with large datasets and curious about how data powers AI training. Experience in model training or deep learning is a plus but not required; we’re happy to teach and support the right candidate.

What you’ll do

- Explore, process, and analyse massive and diverse datasets; from text and structured data to code and multimodal content.
- Design and implement scalable data workflows for cleaning, transforming, and validating high-volume datasets.
- Build and maintain data pipelines that prepare training-ready data for large-scale AI models.
- Develop tools and metrics for assessing dataset quality, diversity, and performance impact.
- Collaborate with AI Researchers to align datasets with evolving model architectures and training objectives.
- Support continuous improvement of data ingestion, curation, and evaluation systems.
- Contribute to open discussions on data quality, ethics, and responsible dataset creation.

Who you are

- Experienced in Python and familiar with data processing frameworks (e.g., Pandas, PySpark, Dask, or Ray).
- Strong background in data analysis, feature engineering, and statistical modeling.
- Comfortable working with large datasets (multi-terabyte scale or distributed systems).
- Understanding of data quality, validation, and reproducibility principles.
- Interested in or curious about machine learning, deep learning, or AI training pipelines.
- Pragmatic, hands-on, and excited to learn new systems, tools, and techniques.
- Motivated to help build Australian-built AI capability and world-class data infrastructure.

Why Maincode

Maincode is a small, highly technical team working at the frontier of Australian AI. We build foundation models from scratch, not just fine-tune existing ones, and the data you work on will directly shape the behaviour of cutting-edge systems.

You’ll be surrounded by people who:

- Care deeply about data quality and scientific rigour.
- Build systems that scale cleanly and transparently.
- Enjoy experimenting, learning, and shipping fast.
- Want to see Australia lead in independent AI innovation.

#J-18808-Ljbffr

  • Senior Data Scientist

    2 weeks ago

    Melbourne, Victoria, Australia Tech & Data People Full time $120,000 - $180,000 per year

    If you're the kind of data scientist who loves diving deep into probabilities, simulation models, and complex statistical challenges — this is a great role for you.You'll join a growing team that's building out the industry leading data science projects. This isn't about stakeholder decks or endless meetings; it's a hands-on role for someone who loves...

  • Data Scientist

    2 weeks ago

    City of Brisbane, Australia Michael Page Australia Full time

    - Be a part of a tight knit team of high performers and problem solvers - Great Central Location with easy access to public transport About Our Client This opportunity is with a publicly listed organisation in the Energy & Natural Resources sector. The company is known for its innovative approach and commitment to leveraging technology to optimise...

  • Senior Data Scientist

    2 weeks ago

    City of Melbourne, Australia Marlee Full time

    Fast-track your career with the Marlee Talent Pool. We're not just matching you with your ideal roles but unlocking your long-term career potential. Marlee goes above and beyond by identifying key strengths for your CV, helping you discover a career direction you might not have considered where you can truly thrive, and guiding you to develop those essential...

  • Senior Data Scientist

    2 weeks ago

    City of Melbourne, Australia Bupaoptical Full time

    Senior Data Scientist - 12 months Fixed term Contract - Melbourne We’re seeking a Senior Data Scientist who thrives in complex environments and has proven experience delivering data science at scale. A key aspect of this role is not just building predictive models but partnering with Tech, ML Engineers and our Clinicians to help build out Data Science...

  • Customer Data Scientist

    1 week ago

    Council of the City of Sydney, Australia h2o.ai Full time

    Founded in 2012, H2O.ai is at the forefront of the AI movement to democratize Generative AI. H2O.ai’s open-source Generative AI and Enterprise h2oGPTe, combined with Document AI and the award-winning autoML Driverless AI, have transformed more than 20,000 global organizations and over half of the Fortune 500 and household brands, including AT&T,...

  • Lead Data Scientist

    1 week ago

    City of Melbourne, Australia Shell Energy Full time

    Lead Data Scientist page is loaded## Lead Data Scientistlocations: Melbourne, Victoriatime type: Full timeposted on: Posted 3 Days Agotime left to apply: End Date: January 3, 2026 (28 days left to apply)job requisition id: JR100321**The world’s biggest challenge needs you, here.**Big challenges require big solutions. And the transition to a...

  • Data Scientist

    2 weeks ago

    Melbourne, Victoria, Australia Future State People Full time

    About the roleAre you a hands-on Data Scientist who loves turning complex data into real business impact? This is your chance to join one of Australia's most recognised and trusted brands - a company known for innovation, creativity, and making data central to how they operate.We're looking for a mid-level Data Scientist with a solid foundation in Python and...

  • Data Scientist

    2 weeks ago

    Melbourne, Victoria, Australia Konnexus Full time $120,000 - $150,000 per year

    Hybrid working model based in the CBDDevelop and optimise quantitative data science modelsCollaborative environment with a great cultureOur client is a household name in the Australian market and a leader in their field and a powerhouse for data-driven innovation. They're growing their Data Science capability and are on the lookout for a Data Scientist to...

  • Data Scientist

    4 weeks ago

    Council of the City of Sydney, Australia Michael Page Australia Full time

    Overview - Apply for impact, innovation, growth and culture - All in one role that empowers you to shape the future through data. About Our Client A leading Australian retailer serving millions weekly, known for innovation, sustainability, and customer focus. It drives data-led decisions across supply chain, digital platforms, and community initiatives to...

  • Senior Data Scientist — Lead Data Strategy

    2 weeks ago

    City of Melbourne, Australia Marlee Full time

    A leading talent solutions firm in Melbourne is seeking a Senior Data Scientist to lead data strategy and execution in the Admin Experience group. You will be responsible for designing scalable data models and mentoring a team while ensuring data integrity. Ideal candidates have strong data science expertise and excel in collaborative environments. This role...