Data Engineer

4 weeks ago

Chennai, India BUILDING BLOCKS SOFTWARE SERVICES PRIVATE Full time

We are seeking a hands-on Data Engineer to own the data side of customer go-lives. You will validate and sign off on data migrations, develop high-quality SQL models that power BI dashboards, and implement automated data quality checks. Your work ensures data accuracy, trust, and performance across our analytics and migration platforms.Key Validation : - Design and execute end-to-end migration tests : row/aggregate parity, schema diffs, referential integrity, nullability, duplicates, and sampling.- Produce migration sign-off packs documenting functional and performance validation.SQL Development & Optimization : - Build and optimize analytical SQL models (CTEs, window functions, incremental loads).- Perform query performance tuning (EXPLAIN plans, indexing, statistics) with PostgreSQL.Data Quality Automation : - Implement and automate data quality checks using Great Expectations, Deequ/PyDeequ, or similar frameworks.- Integrate validation into CI/CD pipelines with visible reporting.Modeling & Documentation : - Maintain well-documented SQL and dbt models with tests and exposures for traceability.- Ensure all BI-facing datasets are reliable, performant, and documented.Orchestration & Reliability : - Productionize pipelines and checks in Apache Airflow with clear SLAs, monitoring, and alerting.- (If applicable) Develop incremental pipelines to Snowflake or optimize batch loads in PostgreSQL.Minimum Qualifications :- 4 -7+ years of experience as a Data/Analytics Engineer.- Advanced SQL expertise with strong RDBMS fundamentals (PostgreSQL required).- Proven track record in data migration testing (parity, integrity, performance).- Hands-on experience with at least one of : DBT Great Expectations / DeequAirflow- Strong understanding of Git-based workflows and CI/CD to Have :- Experience with Snowflake (Streams, Tasks, warehouse cost optimization).- Exposure to BI stacks (Looker, Power BI, Tableau, Metabase) and metrics layers.- Python for lightweight ETL, validation, and automation scripts. (ref:hirist.tech)

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