{"id":115792,"url":"https://alion.io/job/hash-ai-research-engineer-2","title":"AI Research Engineer","company":{"id":26345,"name":"HASH","domain":"hash.ai","url":"https://alion.io/company/hash","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Gem","truth_index":{"grade":"A","score":95,"open_postings":14,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":192,"computed_at":"2026-10-17T05:46:00Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Fine-tuning","optional":false},{"name":"Knowledge Distillation","optional":false},{"name":"Knowledge Graph","optional":false},{"name":"Machine Learning","optional":false},{"name":"Model Distillation","optional":false},{"name":"Multimodal AI","optional":false},{"name":"Post-training","optional":false},{"name":"Python","optional":false},{"name":"Rust","optional":false},{"name":"Synthetic Data","optional":false},{"name":"Trello","optional":false},{"name":"World Models","optional":false}],"status":"live","first_seen_at":"2026-03-25T11:16:36Z","employer_posted_date":"2026-05-01","last_verified_at":"2026-10-17T20:26:36Z","board_verified":true,"closed_at":null,"days_open":206,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":205},"description":"About HASH\nAt HASH, we're building infrastructure to solve information failure and help everybody make the right decisions. Our open-source platform helps firms integrate both structured and unstructured information into knowledge graphs that support simulating, optimizing and automating processes.\nWe’re building toward world models from a radically different perspective to most industry labs. If you want to work on ambitious, original research with the chance to influence both scientific direction and the company itself, we’d love to hear from you.\nOur founders include Joel Spolsky (former founder of Stack Overflow; acq. $1.8bn, and Trello; acq. $425m), Jude Allred (former CTO of Glitch) and Dei Vilkinsons (former CEO of Soho Strategy).\nAbout the role\nIn the last 6 months we've seen significant growth and are now scaling fast. We're hiring exceptional AI researchers in London and Berlin to shape the next generation of foundation models in Europe, both developing new AI models and architectures in-house and post-training existing open-source base models.\nThis is not a role focused only on applying existing models. You’ll work on both:\ndeveloping new model architectures in-house in support of deterministic simulation, and\npost-training and adapting state-of-the-art open-source base models\nRequirements\nStrong research track record in machine learning, deep learning, or foundation models: evidenced by research publications, open-source contributions, or other evidence of original technical work\nDeep understanding of modern model architectures, training dynamics, inference optimization, scaling, and evaluation: transformer, diffusion, and exotic model architectures, sequence modeling, multimodal learning, and generative modeling\nHands-on experience training, fine-tuning, or post-training large models: in particular preference optimization, synthetic data, distillation, continual learning, or alignment\n Strong coding and experimental skills: ideally in Python (and/or Rust) and modern ML tooling\nAbility to move fluidly between research ideas and practical implementation: comfort quickly moving from concept to early-proof right through to release and productization \nHigh agency, strong taste, and excitement about building something category-defining from Europe: we're looking for researchers who are all-in\nWhat you'll work on\nResearch and develop novel model architectures for reasoning, representation learning, and world modeling\nPost-train and adapt open-source foundation models for high-performance real-world use cases\nDesign, run, and analyze experiments across training, evaluation, and scaling\nWork across data, systems, and product to turn research into deployed capability\nContribute to research direction, technical strategy, and long-term model roadmap\nHelp define the culture and standards of a high-talent, research-driven founding team\nWhy HASH\nWork on first-principles AI research tied to a large and important real-world mission\nJoin at a moment of rapid growth, with outsized scope and influence\nHelp build a leading frontier AI lab in Europe with global ambition\nWork alongside founders who have previously built and exited businesses worth billions of dollars\nBe part of a team that moves fast, is enthusiastically open source, and is in it for the long-term\nBenefits\nOur team have founded and sold billion-euro companies from scratch. We offer leading equity-weighted total compensation, including competitive salaries and tax-advantaged options.\nWe meet together quarterly in-person for whole-team retreats, provide engineers with generous learning and tech budgets, and recognise and reward output.\nThis role pays £130,000-£220,000 base/bonus + meaningful equity.","description_format":"text","description_chars":3722,"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":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Integration & ETL Tools","Knowledge Graphs","Intranet & Knowledge Management"],"lifecycle":[{"event":"open","at":"2026-03-25T11:16:36Z"}],"visa":[],"liveness":{"score":28,"band":"fade","label":"Fading","p_open":1,"p_active":0.626,"p_room":0.44,"age_days":205,"expected_fill_days":192,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/hash-ai-research-engineer-2","json_url":"https://alion.io/job/hash-ai-research-engineer-2.json","meta":{"generated_at":"2026-10-17T21:21:12Z","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_verified","counted_by":"address","units_charged":1,"used_today":5955,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":26345},"rest":"https://alion.io/mcp/rest/get_company?id=26345"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fhash-ai-research-engineer-2"},{"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%2Fhash-ai-research-engineer-2"},{"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%2Fhash-ai-research-engineer-2"},{"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/hash-ai-research-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fhash-ai-research-engineer-2"}]}