{"id":1500054,"url":"https://alion.io/job/maincode-head-of-data","title":"Head of Data","company":{"id":450351,"name":"Maincode","domain":"maincode.com","url":"https://alion.io/company/maincode-2","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":95,"open_postings":3,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":159,"computed_at":"2026-10-05T05:45:15Z"}},"role":"Leadership","role_family":"Leadership","seniority":"head","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Australia"],"countries":["AU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":135000,"max_usd":298000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":3107},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Machine Learning","optional":false},{"name":"Post-training","optional":false},{"name":"Pre-training","optional":false}],"status":"live","first_seen_at":"2026-09-30T03:18:32Z","employer_posted_date":"2026-09-30","last_verified_at":"2026-10-06T02:01:15Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"About Maincode\nMaincode makes Matilda, an Australian-made AI stack we own end to end, from tin to token. We own and operate our own infrastructure here in Australia, we train and maintain our own frontier models, and we run multiple surfaces on top of them, including chat, coding and API. Everything we ship is built on capability we control ourselves. We are hiring someone who cares about that. You should be passionate about Australian-made technology, a builder first, and keen to execute at the frontier of data engineering and model training.\nThe role\nA frontier model is only as capable as the data it learns from. We are building a dedicated data organization to source, process, and refine the high value training data that powers Matilda. Our goal is to build the most comprehensive, high quality, and contextually accurate Australian training data catalog in the world.\nYou will be the foundational leader of this team. You will own the entire lifecycle of our training data catalog. This includes web scale crawling, data licensing, filtering, deduplication, and quality control. We need a technical leader who knows how to recruit top tier data engineers and build a machine capable of turning petabytes of raw information into clean, proprietary training sets.\nWhat you will do\nBuild and lead a high performing team of data engineers, ML engineers, and data operations specialists.\n\nDesign and manage the architecture for web scale data crawling, ingestion, and storage.\n\nDevelop robust pipelines for data filtering, cleaning, deduplication, and formatting to ensure the highest quality inputs for model training.\n\nSource and secure proprietary, high value datasets specifically tailored to the Australian context, including navigating licensing and private partnerships.\n\nWork directly with our core training team to iterate on data mixtures, evaluate data quality, and respond to model performance feedback.\n\nEstablish the operational standards for data governance, privacy, and security across all our datasets.\n\nWhat you will bring\nExtensive experience leading data engineering or machine learning data teams at scale.\n\nDeep technical knowledge of distributed data processing frameworks and petabyte scale storage systems.\n\nHands on experience building pipelines for web scraping, data extraction, text processing, and quality filtering.\n\nA proven track record of recruiting, mentoring, and managing elite technical talent.\n\nA strategic understanding of the data landscape, especially regarding sourcing proprietary information and handling complex unstructured data.\n\nHighly regarded\nDirect experience building pre-training or post-training datasets for large language models.\n\nA strong network within the Australian technology, academic, or media ecosystem to facilitate unique data partnerships.\n\nEligibility\nMust have the right to work in Australia.\n\nWillingness to undergo background checks as required.\n\nDetails\nLocation: Melbourne, VIC (or Hybrid/On-Site across Australia).\n\nType: Full time, permanent.\n\nRemuneration: Negotiable based on experience, plus super and equity.\n\nWho thrives here\nLeaders who understand that high quality data is the true moat of any frontier model. If you care about Australian-made technology and you would rather spend your week optimizing data mixtures, unblocking your engineering team, and securing high value data sources than sitting in steering committee meetings, you will do well here.","description_format":"text","description_chars":3449,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"Australia","iso":"AU","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-30T03:40:55Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":5,"expected_fill_days":159,"reasons":["conf:0","velocity","win:early"],"computed_at":"2026-10-05T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/maincode-head-of-data","json_url":"https://alion.io/job/maincode-head-of-data.json","meta":{"generated_at":"2026-10-06T02:23:11Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":3603,"day_limit":5000,"remaining_today":1397,"minute_limit":60,"resets_at":"2026-10-07T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":450351},"rest":"https://alion.io/mcp/rest/get_company?id=450351"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmaincode-head-of-data"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fmaincode-head-of-data"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fmaincode-head-of-data"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/maincode-head-of-data\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmaincode-head-of-data"}]}