{"id":3673759,"url":"https://alion.io/job/elsevier-senior-data-scientist-i-6","title":"Senior Data Scientist I","company":{"id":3090,"name":"Elsevier","domain":"elsevier.com","url":"https://alion.io/company/elsevier","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":26,"ghost_share":0,"stale_share":0.808,"repost_share":0,"time_to_fill_p50_days":28,"computed_at":"2026-11-08T05:47:12Z"}},"role":"Data Science","role_family":"Data Science","seniority":"senior","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":"CI/CD","optional":false},{"name":"ElasticSearch","optional":false},{"name":"Embeddings","optional":false},{"name":"Function Calling","optional":false},{"name":"Git","optional":false},{"name":"Hugging Face","optional":false},{"name":"LangChain","optional":false},{"name":"LangGraph","optional":false},{"name":"LLM","optional":false},{"name":"Machine Learning","optional":false},{"name":"OpenSearch","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"Qdrant","optional":false},{"name":"Scikit-learn","optional":false},{"name":"Semantic Search","optional":false},{"name":"TensorFlow","optional":false},{"name":"Amazon SageMaker","optional":true},{"name":"Kubeflow","optional":true},{"name":"MLFlow","optional":true}],"status":"live","first_seen_at":"2026-11-03T10:07:20Z","employer_posted_date":"2026-11-03","last_verified_at":"2026-11-08T12:11:58Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"Interested in building and shaping AI systems that combine machine learning, retrieval, and modern language models to solve real-world problems\nAbout the team: You’ll work closely with engineering, product, and cross-functional partners to deliver robust, scalable solutions, while helping raise the technical bar across the team.\nAbout the role: We’re looking for a Senior Data Scientist I to lead the design and development of intelligent, data-driven systems that help users explore, understand, and act on complex information.\nIn this role, you’ll take ownership of high-impact problem areas-driving solutions from concept to production while navigating ambiguity and making key technical decisions. You’ll combine strong machine learning foundations with modern AI approaches to build systems that integrate prediction, retrieval, and generation at scale.\nWhat You’ll Do\nLead the design and development of machine learning and AI-powered systems for complex, real-world problems\nOwn end-to-end solutions-from problem framing and experimentation to production deployment and iteration\nDrive technical direction for key problem areas, making informed trade-offs between modeling approaches, system design, and scalability\nApply a range of techniques-from classical ML to large language model (LLM) approaches-based on the problem context\nDesign systems that combine retrieval, ranking, and generation to enable intelligent workflows\nDefine and drive evaluation strategies, ensuring high-quality, reliable, and trustworthy outputs\nContribute to system architecture and scalability, working closely with engineering teams\nMentor and guide other data scientists, helping raise the overall technical bar of the team\nInfluence product direction by translating technical insights into actionable recommendations\nCollaborate with product teams to design experiments, measure impact, and iterate based on evidence\nWhat We’re Looking For\nCore Qualifications\nSignificant experience in data science, machine learning, or a related field\nStrong Python skills with a track record of building production-quality, maintainable systems\nDeep understanding of machine learning fundamentals and experience applying them in real-world settings\nProven experience owning and delivering end-to-end data science or AI projects\nStrong problem-solving skills and ability to navigate ambiguity\nAbility to write clean, tested, well-documented code suitable for collaborative development\nExperience working with cross-functional teams to deliver user-facing data or AI products\nAI & Modern Techniques\nHands-on experience working with large language models (LLMs) in applied or production settings\nExperience with retrieval-based approaches (e.g., embeddings, semantic search, ranking)\nExperience building or contributing to LLM-powered systems involving multi-step reasoning, tool use, or workflow orchestration (e.g., agent-based approaches or frameworks such as LangChain, LangGraph, or similar)\nStrong understanding of when to apply classical machine learning vs. LLM-based approaches\nData & Engineering\nExperience working with large, complex, and unstructured datasets (especially text)\nFamiliarity with ML frameworks (e.g., PyTorch, TensorFlow, Scikit-learn, HuggingFace)\nExperience with cloud platforms and modern development workflows (Git, CI/CD)\nAbility to contribute to scalable system design and collaborate effectively with engineering teams\nExperience with vector databases or search infrastructure such as Elasticsearch, OpenSearch, Qdrant or similar.\nCollaboration & Leadership\nExcellent communication skills with the ability to influence both technical and non-technical stakeholders\nAbility to explain model behavior, trade-offs, and limitations clearly to non-technical audiences\nExperience mentoring or supporting other team members\nAbility to drive projects forward independently while aligning with broader team goals\nNice to Have\nExperience with search, information retrieval, or knowledge systems at scale\nExperience designing evaluation frameworks for AI-generated or retrieval-based outputs\nExposure to MLOps tools and practices (e.g., MLflow, Kubeflow, SageMaker)\nExperience optimizing systems for performance, scalability, or cost\nFamiliarity with frameworks or tools for orchestrating LLM-based workflows and agent-like systems\nExperience working in structured and reproducible development environments (e.g., clear specification of tasks, experiment tracking, and collaborative workflows)\nInterest in emerging paradigms such as spec-driven or AI-assisted development\nExperience with citation-aware, source-grounded, or evidence-based AI systems\nWhy Join Us\nLead work on impactful problems involving complex, real-world data\nBuild and shape systems that combine machine learning fundamentals with modern AI approaches\nCollaborate with a team focused on quality, scalability, and meaningful outcomes\nOpportunity to influence both technical direction and product evolution\n\nWe know your well-being and happiness are key to a long and successful career. 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Learn more about spotting and avoiding scamshere.\nPlease read our Candidate Privacy Policy.\nWe are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law.\nUSA Job Seekers:\nEEO Know Your Rights.","description_format":"text","description_chars":6049,"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":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Publishing","Clinical Decision Support","Scientific & Lab Software"],"lifecycle":[{"event":"open","at":"2026-11-03T10:07:20Z"}],"visa":[],"liveness":{"score":70,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.695,"p_room":1,"age_days":4,"expected_fill_days":28,"reasons":["conf:5","stale_co","wave","velocity","win:early","comp:brand"],"computed_at":"2026-11-08T05:47:12Z"},"pay":null,"html_url":"https://alion.io/job/elsevier-senior-data-scientist-i-6","json_url":"https://alion.io/job/elsevier-senior-data-scientist-i-6.json","meta":{"generated_at":"2026-11-09T02:36:41Z","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":26,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-10T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":3090},"rest":"https://alion.io/mcp/rest/get_company?id=3090"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Felsevier-senior-data-scientist-i-6"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Felsevier-senior-data-scientist-i-6"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Felsevier-senior-data-scientist-i-6"},{"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/elsevier-senior-data-scientist-i-6\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Felsevier-senior-data-scientist-i-6"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3673759}},{"tool":"search_jobs","arguments":{"company":"elsevier.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3673759},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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