Data Engineer

2 weeks ago

Chennai, Tamil Nadu, 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 / Deequ
  • Airflow
- 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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