{"id":802971,"url":"https://alion.io/job/xm-senior-data-scientist-graph-machine-learning","title":"Senior Data Scientist – Graph Machine Learning","company":{"id":56888,"name":"XM","domain":"xm.com","url":"https://alion.io/company/xm-com","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":73,"open_postings":54,"ghost_share":0.37,"stale_share":0,"repost_share":0.019,"time_to_fill_p50_days":189,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Athens, Greece","Limassol, Cyprus","Nicosia, Cyprus","Thessaloniki, Greece"],"countries":["GR","CY"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":30000,"max_usd":78000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2679},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon Neptune","optional":false},{"name":"Machine Learning","optional":false},{"name":"Matplotlib","optional":false},{"name":"Neo4j","optional":false},{"name":"NumPy","optional":false},{"name":"Pandas","optional":false},{"name":"Plotly","optional":false},{"name":"Python","optional":false},{"name":"Seaborn","optional":false}],"status":"live","first_seen_at":"2026-07-28T06:57:06Z","employer_posted_date":"2026-07-28","last_verified_at":"2026-11-07T23:08:58Z","board_verified":true,"closed_at":null,"days_open":102,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":101},"description":"The Role:\nWe are looking for a Senior Data Scientist specializing in Graph AI to join our growing Data Science team. In this role, you will design and deploy production-grade graph machine learning solutions, working with Graph Neural Networks (GNNs), graph databases, and large-scale datasets to solve complex real-world problems.\nYou will play a key role in shaping the company's Graph AI capabilities, collaborating with cross-functional teams and mentoring other data scientists while delivering innovative, business-impacting solutions.\nThe main responsibilities of the position include:\nDesign, develop, and deploy Graph Neural Networks (GNNs) and graph-based machine learning solutions\n\nTransform large, complex datasets into graph representations and extract actionable insights using advanced analytics, graph algorithms, and statistical techniques.\n\nDrive the adoption of Graph AI across the organisation by identifyingnew use cases and contributing to the evolution of the company's data science strategy.\n\nCommunicate complex technical concepts and model outcomes clearly to both technical and business audiences.\n\nEnsure high standardsin data preparation, feature engineering, model evaluation, documentation, and code quality.\n\nLeverage technologies such as Python, Graph Neural Networks, graph databases, modern ML frameworks, and cloud-based data platformsto build innovative data solutions\n\nEnsure adherence to best practices in data quality, model monitoring, version control, and reproducible analytics\n\nLead and supervise a team of data scientists working on graph-related tasks\n\nPartner closely with Data Engineers, Software Engineers, Product Managers, and business stakeholders to translate business challenges into scalable Graph AI solutions.\n\nMain requirements:\nUniversity degree in Mathematics, Physics, Computer Science, Engineering, Data Science, or a related quantitative field\n\nAt least 6 years of experience in data science, machine learningand AI, including hands-on experience in designing, trainingand optimising Graph Neural Networks (GNNs) for production applications.\n\nExperience working with relational and non-relational databases\n\nSolid experience working with graph databases (e.g., Neo4j, Neptune) and proficiencyin graph query languages (e.g., Cypher or Gremlin).\n\nExperience with data visualization tools such as Matplotlib, Seaborn, or Plotly\n\nStrong programming skills in Python and experience with Pandas, NumPy, and similar data analysis libraries\n\nStrong analytical thinking, problem-solving ability, and attention to detail.\n\nExcellent communication skills and the ability to work collaboratively in a team environment\n\nFluent in English\n\nBenefit from:\nAttractive remunerationpackage plus performance related reward\n\nPrivate health insurance\n\nCorporate pension fund\n\nIntellectually stimulating work environment\n\nContinuous personal development and international training opportunities\n\nThe Hiring Experience: What Awaits You\nLet’sConnect - Intro Chat with Talent Acquisition\n\nDeep Dive - First Interview with Your Future Team\n\nBring It to Life - Role-Specific Take-Home Task\n\nFinal Connection - Final Interview","description_format":"text","description_chars":3161,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Health insurance"],"hiring_locations":[{"name":"Greece","iso":"GR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Online Brokerage & Trading Platforms","Forex & CFD Brokers"],"lifecycle":[{"event":"open","at":"2026-09-12T08:41:00Z"}],"visa":[],"liveness":{"score":62,"band":"ok","label":"Likely open","p_open":1,"p_active":0.86,"p_room":0.72,"age_days":101,"expected_fill_days":189,"reasons":["conf:2","win:mid","crowd:"],"computed_at":"2026-11-07T05:47:08Z"},"pay":null,"html_url":"https://alion.io/job/xm-senior-data-scientist-graph-machine-learning","json_url":"https://alion.io/job/xm-senior-data-scientist-graph-machine-learning.json","meta":{"generated_at":"2026-11-08T02:48:34Z","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":5998,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-09T00:00:00Z"}},"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":56888},"rest":"https://alion.io/mcp/rest/get_company?id=56888"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fxm-senior-data-scientist-graph-machine-learning"},{"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%2Fxm-senior-data-scientist-graph-machine-learning"},{"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%2Fxm-senior-data-scientist-graph-machine-learning"},{"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/xm-senior-data-scientist-graph-machine-learning\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fxm-senior-data-scientist-graph-machine-learning"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":802971}},{"tool":"search_jobs","arguments":{"company":"xm.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":802971},"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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