{"id":2885197,"url":"https://alion.io/job/quantiphi-senior-knowledge-graph-engineer","title":"Senior Knowledge Graph Engineer","company":{"id":6155,"name":"Quantiphi","domain":"quantiphi.com","url":"https://alion.io/company/quantiphi","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":70,"open_postings":66,"ghost_share":0.5,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":32,"computed_at":"2026-10-20T05:45:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":95000,"max_usd":181000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":669},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"GCP","optional":false},{"name":"Java","optional":false},{"name":"Knowledge Graph","optional":false},{"name":"Neo4j","optional":false},{"name":"Python","optional":false},{"name":"Snowflake","optional":false}],"status":"live","first_seen_at":"2026-10-19T00:00:00Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-10-20T16:34:58Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":1},"description":"While technology is the heart of our business, a global and diverse culture is the heart of our success. We love our people and we take pride in catering them to a culture built on transparency, diversity, integrity, learning and growth.\nIf working in an environment that encourages you to innovate and excel, not just in professional but personal life, interests you- you would enjoy your career with Quantiphi!\nAbout Quantiphi\nQuantiphi is an award-winning, AI-First digital engineering and consulting company focused on delivering high-impact Services and Solutions that help organizations solve what truly matters. We partner with enterprises to reimagine their businesses through intelligent, scalable, and transformative AI-driving measurable outcomes at the very core of their operations.\nSince our founding in 2013, Quantiphi has tackled some of the world’s most complex business challenges by combining deep industry expertise, disciplined cloud and data engineering practices, and cutting-edge applied AI research. Our work is rooted in delivering accelerated, quantifiable business value-not just technology for technology’s sake.\nHeadquartered in Boston, Quantiphi is a global organization with 4,000+ professionals serving clients across key industry verticals, including BFSI, Healthcare & Life Sciences, CPG, MFG, TME etc. As an Elite and Premier partner to leading cloud and AI platforms such as NVIDIA, Google Cloud, AWS, and Snowflake, we build and deliver enterprise-grade AI services and solutions that create real-world impact.\nFor more details, visit: Website or LinkedIn Page.\nRole: Senior Knowledge Graph Engineer\nExperience: 5+ years of software/data engineering experience\nEmployment Type: Full-Time (US Remote)\nWork Location: US Remote (Up to 25% travel to client sites across the US)\nRole Overview\nWe are looking for a Senior Knowledge Graph Engineer to design, build, and productionize knowledge graph solutions for healthcare and clinical data.\nOur architecture uses a hybrid graph approach, combining a Labeled Property Graph (LPG) for patient/clinical data with an RDF-based graph for clinical ontology and semantic knowledge.\nThe role will focus on translating ontology and mapping specifications into scalable graph solutions, including data transformation, graph ingestion, concept/entity linking, provenance, validation, and querying.\nYou will work closely with ontology, terminology, FHIR, clinical/domain, and data engineering teams to translate agreed semantic and mapping decisions into robust technical implementations.\nKey Responsibilities:\nDevelop, implement, build, and maintain production knowledge graph solutions across LPG and RDF graph technologies.\nBuild scalable pipelines to transform healthcare/FHIR data into appropriate graph representations.\nImplement mappings between patient/clinical data and concepts represented in the clinical ontology.\nDevelop reusable mapping and transformation patterns rather than one-off implementations.\nImplement consistent approaches for entity identity, canonical identifiers/URI/IRI, relationships, and concept linking.\nMaintain provenance and traceability between source data, mapping rules, and resulting graph entities and relationships.\nDevelop and optimize graph queries using Cypher and/or SPARQL.\nImplement automated validation and testing to identify unresolved mappings, inconsistent relationships, and other graph-quality issues.\nWork with ontology, FHIR, terminology, and clinical SMEs to clarify ambiguous or missing mapping requirements.\nParticipate in technical design, architecture reviews, code reviews, and engineering best practices.\nRequired Qualifications:\n5+ years of software/data engineering experience, including hands-on experience with knowledge graphs or graph technologies.\nStrong understanding of knowledge graph and graph data modeling concepts.\nHands-on experience with either:Labeled Property Graphs, such as Neo4j/Cypher or equivalent, orRDF/semantic technologies, such as RDF/RDFS, OWL, and SPARQL.\nWorking knowledge of, or ability to work across, both LPG and RDF graph models.\nStrong programming skills in Python, Java, or similar languages.\nExperience building production data ingestion, transformation, or integration pipelines.\nExperience with graph databases and/or RDF triple stores.\nUnderstanding of entity identity, graph relationships, mappings, provenance, and data quality.\nAbility to translate conceptual models and mapping specifications into production implementations.\nAbility to work effectively with evolving requirements and cross-functional technical/domain teams.\nOther Qualifications (OQs)\nHands-on experience with both LPG and RDF/semantic knowledge graphs.\nHealthcare or life sciences data experience.\nFamiliarity with HL7 FHIR, including concepts such as Coding, CodeableConcept, Reference, and Identifier.\nExperience with ontology-driven data integration or semantic mapping.\nExperience with SHACL or other graph/semantic validation approaches.\nExperience with terminology/concept normalization and canonical concept mapping.\nFamiliarity with clinical terminologies such as SNOMED CT, LOINC, RxNorm, ICD, or UMLS.\nCloud and CI/CD experience.\nWhat Sets You Apart?\nHands-on experience with both LPG and RDF/semantic knowledge graphs.\nHealthcare or life sciences data experience with familiarity with HL7 FHIR and clinical terminologies (SNOMED CT, LOINC, RxNorm, ICD, or UMLS).\nExperience with ontology-driven data integration, semantic mapping, and SHACL/semantic validation approaches.\nCloud and CI/CD engineering experience in production environment.\nWhat’s In It For YOU At Quantiphi?\nMake an impact at one of the world’s fastest-growing AI-first digital engineering companies.\nUpskill and discover your potential as you solve complex challenges in cutting-edge areas of technology alongside passionate, talented colleagues.\nWork where innovation happens - work with disruptive innovators in a research-focused organization with 60+ patents filed across various disciplines.\nStay ahead of the curve, immerse yourself in breakthrough AI, ML, data, and cloud technologies and gain exposure working with Fortune 1000 companies.\nIf you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!\nIf you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!","description_format":"text","description_chars":6396,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Biotechnology","Document AI","Cloud Consulting & Migration","Data Engineering & Migration Services"],"lifecycle":[{"event":"open","at":"2026-10-20T00:08:20Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 46","filings_12m":46,"filings_prev_12m":49,"green_card_filings_12m":0,"median_offered_wage_usd":122500,"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)"],"filings_for_role_12m":0}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":1,"expected_fill_days":32,"reasons":["conf:1","stale_co","velocity","win:early"],"computed_at":"2026-10-20T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/quantiphi-senior-knowledge-graph-engineer","json_url":"https://alion.io/job/quantiphi-senior-knowledge-graph-engineer.json","meta":{"generated_at":"2026-10-20T20:35:12Z","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":23916,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-21T00:00:00Z"}},"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":6155},"rest":"https://alion.io/mcp/rest/get_company?id=6155"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fquantiphi-senior-knowledge-graph-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%2Fquantiphi-senior-knowledge-graph-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%2Fquantiphi-senior-knowledge-graph-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/quantiphi-senior-knowledge-graph-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fquantiphi-senior-knowledge-graph-engineer"}]}