{"id":3268284,"url":"https://alion.io/job/buildingblocks-software-services-senior-data-engineer","title":"Senior Data Engineer","company":{"id":4475290,"name":"BUILDINGBLOCKS SOFTWARE SERVICES","domain":"buildingblocks.la","url":"https://alion.io/company/buildingblocks-software-services","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chennai, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":18500,"max_usd":40000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":75},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"dbt","optional":false},{"name":"Git","optional":false},{"name":"Great Expectations","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Snowflake","optional":false},{"name":"SQL","optional":false},{"name":"AWS","optional":true},{"name":"Looker","optional":true},{"name":"Metabase","optional":true},{"name":"Power BI","optional":true},{"name":"Tableau","optional":true}],"status":"live","first_seen_at":"2026-10-26T10:09:18Z","employer_posted_date":null,"last_verified_at":"2026-10-26T10:09:18Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"Senior Data Engineer:\n\nWe are looking for a hands-on Data Engineer who will play a key role in ensuring the accuracy, reliability, and performance of data during customer go-lives.\n\nThis role focuses on validating data migrations, building optimized SQL-based data models, and implementing automated data quality checks using Python to support business analytics and reporting.\n\nKey Responsibilities:\n\nData Migration Validation:\n\n- Validate end-to-end data migrations to ensure accuracy and completeness.\n\n- Perform checks such as data parity, nullability, duplicates, and referential integrity.\n\n- Document validation results and support migration sign-off.\n\nSQL Development & Optimization:\n\n- Write and optimize complex SQL queries (CTEs, joins, window functions).\n\n- Analyze query performance using EXPLAIN plans and improve efficiency.\n\n- Build scalable data models to support analytics use cases.\n\nData Quality & Automation (Python-Driven):\n\n- Develop automated data validation checks using Python.\n\n- Work with data quality frameworks like Great Expectations, Deequ, or similar tools.\n\n- Build reusable validation scripts and ensure data reliability.\n\nData Modeling & Documentation:\n\n- Build and maintain data models using dbt (if applicable).\n\n- Implement tests, documentation, and lineage tracking.\n\nWorkflow Orchestration:\n\n- Schedule and manage pipelines using Airflow.\n\n- Monitor workflows, handle failures, and ensure SLA adherence.\n\n(Optional) Cloud & Warehousing:\n\n- Work with PostgreSQL, Snowflake, or similar data warehouses.\n\n- Optimize batch processing and data pipelines for performance.\n\nRequired Skills & Experience:\n\n- 4 - 10 years of experience in Data Engineering / Analytics Engineering.\n\n- Strong expertise in SQL and Python (both are mandatory).\n\n- Hands-on experience with PostgreSQL or similar relational databases.\n\n- Experience in data migration validation / data quality checks.\n\n- Strong understanding of query optimization and performance tuning.\n\n- Experience with at least one of the following: dbt, Airflow, Great Expectations, or Deequ.\n\n- Familiarity with Git and version control workflows.\n\nNice to Have:\n\n- Experience with Snowflake or cloud platforms (AWS preferred).\n\n- Exposure to BI tools (Power BI, Tableau, Looker, Metabase).\n\n- Experience building scalable data pipelines.\n\nWhy Join Us:\n\n- Work on high-impact, data-critical projects.\n\n- Opportunity to build robust and scalable data systems.\n\n- Collaborative and fast-paced environment.\n\nSkills\nData Engineering, Data Migration, Data Validation, SQL, Data Quality, Data Modeling, Workflows, Python, Git, Data Build Tool","description_format":"text","description_chars":2618,"description_truncated":false,"requirements":{"experience_years_min":7,"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":[],"lifecycle":[{"event":"open","at":"2026-10-26T10:29:35Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":1,"expected_fill_days":28,"reasons":["seen:1","velocity","win:early"],"computed_at":"2026-10-28T05:59:10Z"},"pay":null,"html_url":"https://alion.io/job/buildingblocks-software-services-senior-data-engineer","json_url":"https://alion.io/job/buildingblocks-software-services-senior-data-engineer.json","meta":{"generated_at":"2026-10-29T00:33:10Z","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":696,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-30T00:00:00Z"}},"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":4475290},"rest":"https://alion.io/mcp/rest/get_company?id=4475290"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fbuildingblocks-software-services-senior-data-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%2Fbuildingblocks-software-services-senior-data-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%2Fbuildingblocks-software-services-senior-data-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/buildingblocks-software-services-senior-data-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fbuildingblocks-software-services-senior-data-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3268284}},{"tool":"search_jobs","arguments":{"company":"buildingblocks.la","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3268284},"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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