{"id":3513232,"url":"https://alion.io/job/tech-mahindra-lead-data-scientist-4","title":"Lead Data Scientist","company":{"id":5484,"name":"Tech Mahindra","domain":"techmahindra.com","url":"https://alion.io/company/tech-mahindra","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Career site","truth_index":null},"role":"Data Science","role_family":"Data Science","seniority":"lead","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Kolkata, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":22000,"max_usd":48000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":20},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"ETL/ELT","optional":false},{"name":"Informatica","optional":false},{"name":"Snowflake","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-30T09:01:01Z","employer_posted_date":"2026-10-30","last_verified_at":"2026-11-03T12:29:18Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Job Description\n\nSkill Set :\nSnowflake Snowpro\n\nTotal Experience :\n10.00 to 15.00 Years\n\nNo of Openings :\n1\n\nJob Post Date :\n19/10/2026\n\nJob Expiry Date :\n30/11/2026\n\nDomain :\nIT\n\nLocation :\nKOLKATA [India]\n\nJob Reference No :\n4113601\n\nJob Summary\nWe are seeking an experienced ETL Technical Lead / Senior Informatica Developer to design, develop, modernize, and support enterprise data integration solutions. The successful candidate will combine strong hands on expertise in Informatica PowerCenter and SQL with the ability to guide development teams, engage with business and technical stakeholders, and manage delivery across development, testing, deployment, and production support.\nThe role will support complex data warehouse and migration programs, including modernization of legacy Informatica workloads and integration with Snowflake. Experience in regulated or data intensive industries such as pharmaceuticals, banking, or automotive financial services will be valuable.\nKey Responsibilities\nETL design and development\nDesign, develop, enhance, and maintain ETL mappings, mapplets, transformations, workflows, and reusable components using Informatica PowerCenter.\nAnalyze business requirements and translate them into scalable ETL designs and technical specifications.\nPrepare and maintain Source to Target Mapping specifications, data mapping rules, query designs, and supporting technical documentation.\nDevelop and optimize complex SQL, PL/SQL, stored procedures, database views, and data validation queries.\nReengineer or migrate legacy Informatica mappings to modern platforms, including Snowflake based data solutions.\nValidate data transformations, reconciliation rules, and migration outputs to maintain data integrity and functional accuracy.\nDiagnose incorrect data population, identify root causes, and reconstruct ETL logic where required. \nTechnical leadership and delivery\nLead or coordinate an offshore data engineering team, allocating work and monitoring delivery against sprint and project commitments.\nProvide technical mentoring, design guidance, and structured code reviews for ETL and SQL deliverables.\nAct as a technical point of contact for onshore teams, architects, clients, testing teams, and business users.\nParticipate in requirement discovery sessions and resolve technical or architectural questions.\nEstimate development effort, identify implementation dependencies, and prepare delivery and deployment plans.\nTrack risks, dependencies, impediments, and delivery status through Agile ceremonies and project reporting.\nPromote coding standards, reusable design patterns, performance optimization, and documentation 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