{"id":36353,"url":"https://alion.io/job/flagshippioneering-machine-learning-research-engineer","title":"Machine Learning Research Engineer","company":{"id":8393,"name":"Flagship Pioneering","domain":"flagshippioneering.com","url":"https://alion.io/company/flagshippioneering","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":true,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":85,"open_postings":10,"ghost_share":0,"stale_share":0.4,"repost_share":0,"time_to_fill_p50_days":62,"computed_at":"2026-10-17T05:46:00Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Cambridge, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":120000,"max":192500,"currency":"USD","period":"year","gross":null,"usd_annual":192500},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Context Engineering","optional":false},{"name":"Edge AI","optional":false},{"name":"LangGraph","optional":false},{"name":"LLM","optional":false},{"name":"Machine Learning","optional":false},{"name":"NLP","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"Reinforcement Learning","optional":false},{"name":"SFT","optional":false},{"name":"vLLM","optional":false},{"name":"GDPR","optional":true},{"name":"LangChain","optional":true}],"status":"live","first_seen_at":"2026-07-27T21:15:32Z","employer_posted_date":"2026-10-06","last_verified_at":"2026-10-17T07:58:41Z","board_verified":true,"closed_at":null,"days_open":81,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":81},"description":"The Company \nIris Labs, Inc. is a privately held, early-stage company pioneering the use of artificial intelligence to transform how people navigate life’s challenges and wellbeing. We are creating a platform that empowers people to build a life they are proud of and fulfilled by. We bring together psychology, product, design, engineering, and machine learning to build digital experiences that are engaging, trustworthy, and genuinely helpful. \nIris Labs is backed by Flagship Pioneering, an innovation enterprise that conceives, creates, resources, and builds companies that invent breakthrough technologies that transform the world. Flagship has created over 100 groundbreaking companies since 2000, including Moderna. \nThe Role \nIris Labs seeks a talented Machine Learning Research Engineer. The successful candidate will innovate, develop and apply machine learning (ML) methods to create foundational psychological tools. This position is ideal for someone with broad expertise in machine learning, reinforcement learning from human feedback, supervised fine tuning, and computational sciences who is looking to join a very dynamic and innovative environment and pioneer the next frontier of innovation, application, and human-ai interactions enabled by state-of-the-art models. A successful candidate should have a passion for building technologies that enable others to maximize their potential. \nWorking at Iris Labs, you will have the opportunity to work with world-class scientists, engineers, and researchers who work on cutting-edge ai research and applications. \nKey Responsibilities \nDesign, develop, and deploy ML-powered applications that leverage large language models (LLMs) to address complex challenges in wellbeing. \nCollaborate with psychological experts and translate interdisciplinary insights into computational frameworks. \nHelp advance the state of the art in context engineering, agentic AI and learning from human feedback. \nBuild scalable pipelines for data collection, labeling, training, and deployment of LLM-based systems. \nSupport the integration of ML systems into real-world applications with measurable outcomes. \nCommunicate findings to a multi-disciplinary audience. \nProfessional Experience & Qualifications \nMasters level (or above) experience in CS, ML, and AI is preferred, but can be relaxed for exceptional candidates. \nStrong foundation in machine learning, deep learning, and natural language processing (NLP). \nPublications at top ML / NLP venues such as NeurIPS, ICML, ACL and EMNLP are a bonus.\nProven experience deploying LLM-powered applications in production environments, including expertise in frameworks like PyTorch, vLLM, and LangGraph. \nProficiency in Python and tools for ML development, large-scale data pipelines and pre-processing, and standard evaluation protocols. \nSelf-motivated and comfortable working in ambiguous, fast-moving environments with evolving goals. \nExcellent communication and presentation skills. \nMust be able to think independently and work collaboratively. \nExperience in a previous startup is a plus.\nAbout Flagship Pioneering \nFlagship Pioneering invents and builds platform companies, each with the potential for multiple products that transform human health, sustainability and beyond. Since its launch in 2000, Flagship has originated more than 100 companies. Many of these companies have addressed humanity’s most urgent challenges: vaccinating billions of people against COVID-19, curing intractable diseases, improving human health, preempting illness, and feeding the world by improving the resiliency and sustainability of agriculture. \nFlagship has been recognized twice on FORTUNE’s “Change the World” list, an annual ranking of companies that have made a positive social and environmental impact through activities that are part of their core business strategies and has been twice named to Fast Company’s annual list of the World’s Most Innovative Companies. Learn more about Flagship at www.flagshippioneering.com. \nAt Flagship, we accept impossible missions to enable bigger leaps. Our core values guide us through uncertainty and toward lasting impact. \nWe are an equal opportunity employer. All qualified applicants will be considered for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law. \nWe recognize that great candidates often bring unique strengths without fulfilling every qualification. If you have some of the experience listed above but not all, please apply anyway. We are dedicated to building diverse and inclusive teams and look forward to learning more about your background and interest in Flagship. \nRecruitment & Staffing Agencies: Flagship Pioneering and its affiliated Flagship Lab companies (collectively, “FSP”) do not accept unsolicited resumes from any source other than candidates. The submission of unsolicited resumes by recruitment or staffing agencies to FSP or its employees is strictly prohibited unless contacted directly by Flagship Pioneering’s internal Talent Acquisition team. Any resume submitted by an agency in the absence of a signed agreement will automatically become the property of FSP, and FSP will not owe any referral or other fees with respect thereto. \nThe salary range for this role is $120,000 - $192,500. Compensation for the role will depend on a number of factors, including a candidate’s qualifications, skills, competencies, and experience. Iris Labs, Inc. currently offers healthcare coverage, annual incentive program, retirement benefits and a broad range of other benefits. Compensation and benefits information is based on Iris Labs, Inc.'s good faith estimate as of the date of publication and may be modified in the future.\nPrivacy Notice for Applicants: When you apply for a role at Flagship Pioneering or one of its portfolio companies, we collect and use personal information you provide (such as your name, contact details, work history, and application materials) to evaluate your application, communicate with you, and comply with legal obligations. Your application data is processed through Greenhouse, our applicant tracking system, and may also be reviewed using AI-assisted screening tools. We do not sell your personal information. California residents have rights under the CCPA/CPRA including to know, delete, and opt out of the sharing of their personal information. If you are located in the EU or UK, we process your data under GDPR and you have rights to access, rectify, and erase your data. To exercise your rights or for questions, contact .","description_format":"text","description_chars":6707,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Venture Capital"],"lifecycle":[{"event":"open","at":"2026-07-27T21:15:32Z"},{"event":"close","at":"2026-09-22T14:04:20Z"},{"event":"reopen","at":"2026-09-22T19:59:57Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 10 · green card filings: 2","filings_12m":10,"filings_prev_12m":3,"green_card_filings_12m":2,"median_offered_wage_usd":150833,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":1}],"liveness":{"score":21,"band":"cold","label":"Long shot","p_open":1,"p_active":0.471,"p_room":0.44,"age_days":81,"expected_fill_days":62,"reasons":["conf:1","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":192500,"is_top_pay":false},"html_url":"https://alion.io/job/flagshippioneering-machine-learning-research-engineer","json_url":"https://alion.io/job/flagshippioneering-machine-learning-research-engineer.json","meta":{"generated_at":"2026-10-17T10:30:45Z","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":13692,"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":8393},"rest":"https://alion.io/mcp/rest/get_company?id=8393"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fflagshippioneering-machine-learning-research-engineer"},{"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%2Fflagshippioneering-machine-learning-research-engineer"},{"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%2Fflagshippioneering-machine-learning-research-engineer"},{"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/flagshippioneering-machine-learning-research-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fflagshippioneering-machine-learning-research-engineer"}]}