{"id":35131,"url":"https://alion.io/job/physicsx-principal-research-scientist","title":"Senior Research Scientist","company":{"id":251,"name":"PhysicsX","domain":"physicsx.ai","url":"https://alion.io/company/physicsx","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":83,"open_postings":40,"ghost_share":0.2,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":98,"computed_at":"2026-11-12T10:38:37Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":null,"work_mode":"hybrid","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":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Computer Vision","optional":false},{"name":"CUDA","optional":false},{"name":"Diffusion Models","optional":false},{"name":"JAX","optional":false},{"name":"Machine Learning","optional":false},{"name":"NumPy","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"SciPy","optional":false}],"status":"live","first_seen_at":"2026-04-27T11:43:03Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-13T19:53:59Z","board_verified":true,"closed_at":null,"days_open":200,"trust":{"level":"ok","repost_count":1,"flags":["company_stale"],"days_open":199},"description":"About us\nRe-architecting Engineering for the Age of Intelligence\n\nPhysicsX is the physics AI company for industrials. The company’s mission is to accelerate hardware innovation by overhauling what industrial engineering and manufacturing look like today. PhysicsX is building a new simulation software stack to deliver deep physics AI enablement across the entire engineering lifecycle. The company partners with leading organisations in aerospace & defence, automotive, semiconductors, materials, and energy & renewables, supporting them on some of their most critical and complex challenges. PhysicsX is headquartered in the United Kingdom, with offices in London, New York, and Singapore and an expanding presence in the Bay Area.\nNote: We are currently recruiting for multiple levels and positions, however please only apply for the role that best aligns with your skillset and career goals.\nWhat you will do \nOwn Research work-streams at a high-level to deliver outcomes.Align priorities with problem stakeholders, internal and external.\nSet the technical direction for the stream and apply judgement and taste to drive progress.\nPlan roadmaps with clear milestones for key decisions and outcomes.\nOrganise and guide the more junior members of the team to effectively execute and deliver against this roadmap.\nCommunicate purpose and key outcomes to raise awareness across the company and create opportunities for use and deployment.\n\nContribute towards Research group strategy and culture.Identify research areas that would be valuable to the company and champion their development, ordering wrt other research objectives.\nPromote effective working patterns and proactively flag issues with team dynamics to foster a productive environment.\nNurture younger colleagues to grow their skillset and guide their professional development.\n\nThe below activities in particular.Work closely with our machine learning engineers, simulation engineers, and customers to translate physics and engineering challenges into mathematical problem formulations.\nBuild models to predict the behaviour of physical systems using state-of-the-art machine learning and deep learning techniques.\nDiscuss the results and implications of your work with colleagues and customers, especially how these results can address real-world problems.\nCollaborate with colleagues beyond the research team to translate your models into production-ready code.\nCommunicate your work to others internally and externally as called for in paper publication venues, industry workshops, customer conversations, etc. This will involve writing for academic and non-academic audiences.\n\nWhat you bring to the table\nAbility to scope and effectively deliver projects.\nEnthusiasm about using machine learning, especially deep learning and/or probabilistic methods, for science and engineering.\nStrong problem-solving skills and the ability to analyse issues, identify causes, and recommend solutions quickly.\nExcellent collaboration and communication skills - with teams and customers alike.\nPhD in computer science, machine learning, applied statistics, mathematics, physics, engineering, or a related field, with particular expertise in any of the following:operator learning (neural operators), or other probabilistic methods for PDEs;\ngeometric deep learning or other 3D computer vision methods for point-cloud or mesh-structured data;\ngenerative models for geometry and spatiotemporal data (VAEs, Diffusion Models, Bayesian non-parametric, scaling to large datasets, etc.).\n\nIdeally, >4 years of experience in a data-driven role in a professional industry setting, where you have been instrumental in:building machine learning models and pipelines in Python, using common libraries and frameworks (PyTorch / CUDA, ideally with exposure to JAX, NumPy / SciPy), especially including deep learning applications;\ndeveloping models for bespoke problem settings that involve high-dimensional data (spatiotemporal, geometric, physical);\niterating on network architecturpes and model structure, tuning and optimising for inductive biases, improved generalisability, and improved performance;\ncombining theoretical reasoning with empirical intuition to guide investigation;\nformulating and running experiment pipelines to benchmark models and produce comparable results;\nwriting skills for communication complex technical concepts to peers and non-peers, tailoring the message for the required audience.\n\nPublication record in reputable venues that demonstrates mastery in your field, and in particular the domains of interest listed above. Desirable venues include (but not limited to): NeurIPS, ICML, ICLR, UAI, AISTATS, AAAI, Siggraph, CVPR or TPAMI/JMLR.\n\nWhat we offer\nBuild what actually matters\nHelp shape an AI-native engineering company at a formative stage, tackling problems that genuinely matter for industry and society. This is work with real-world impact - and something you can be proud to stand behind.\nLearn alongside exceptional people\nWork with a high-caliber, collaborative team of engineers, scientists, and operators who care deeply about doing great work, and about helping each other get better. We come from diverse backgrounds, but we share a commitment to operating at the highest level and addressing some of the most complex challenges out there. If you’re ambitious, thoughtful, and driven by impact, you’ll feel at home.\nInfluence over hierarchy\nWe operate with a flat structure: good ideas win - wherever they come from. Questioning assumptions and challenging the status quo isn’t just welcomed, it’s expected.\nSustainable pace, long-term ambition\nBuilding meaningful technology is a marathon, not a sprint. We believe in balancing focused, ambitious work with a life beyond it. Our hybrid model blends time together in our Shoreditch office with work-from-home days, giving you the flexibility to work sustainably while staying connected in person.\nAnd it doesn’t stop there …\n Equity options - share meaningfully in the company you’re helping to build.\n 10% employer pension contribution - because investing in future matters.\n Free office lunches - to keep you energised and focused.\n Enhanced parental leave - 3 months full pay paternity and 6 months full pay maternity leave, to provide extra flexibility during the moments that matter most.\n YellowNest nursery scheme - to help working parents manage childcare costs.\n 25 days of Annual Leave (+ Public Holidays) - because taking time to rest matters.\n Private medical insurance - 100% employee cover, giving you complete peace of mind.\n Wellhub Subscription - gain access to thousands of gyms, classes and wellness apps, supporting both physical and mental wellbeing.\n Eye tests - because good work depends on good health.\n Personal development - dedicated support for learning, development, and leveling up over time.\n Employee Assistance Programme (EAP) - confidential wellbeing support, available whenever you need it.\n Bike2Work scheme and Season ticket loan - to make getting to work easier and greener.\n Octopus EV salary sacrifice - for a simpler, more sustainable way to drive electric.\n Watch this space, we’re continuing to build this as we grow…\nWe value diversity and are committed to equal employment opportunity regardless of sex, race, religion, ethnicity, nationality, disability, age, sexual orientation or gender identity. We strongly encourage individuals from groups traditionally underrepresented in tech to apply. To help make a change, we sponsor bright women from disadvantaged backgrounds through their university degrees in science and mathematics. \nWe collect diversity and inclusion data solely for the purpose of monitoring the effectiveness of our equal opportunities policies and ensuring compliance with employment and equality legislation. 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