Hi, I’m
Mridu Singh
Senior Data Engineer
Noida
Summary
Senior Data Engineer with 10+ years of experience building scalable data platforms using Databricks, Snowflake, and Informatica. Skilled in developing PySpark-based data pipelines and Delta Lake architectures, and modernizing legacy ETL systems into cloud-native solutions.
Strong expertise in performance optimization, data modeling, and pipeline orchestration, supporting large-scale analytics in the insurance domain.
Hands-on experience with GenAI, including a RAG-based POC on Databricks for natural language data querying.
Skills
Databricks: PySpark, Delta Lake, Workflows, Unity Catalog
Cloud & Warehousing: Snowflake, AWS (S3, Glue)
ETL Tools: Informatica PowerCenter, IICS/CDI, SSIS
Programming: Python, SQL (Advanced), PL/SQL
Data Engineering: Data Pipelines, Medallion Architecture, Data Modeling
Optimization: Query Tuning, Partitioning, Caching
GenAI: RAG, LLM Integration, Vector-Based Retrieval
Certification
Databricks Certified Data Engineer Associate
Overview
10
years of professional experience
4
Certificates
Work History
LTM (Former LTIMINDTREE)
Senior Data Engineer
10.2024 - Current
Job overview
- Architected Databricks Lakehouse pipelines using Delta Lake, enabling scalable processing of high-volume insurance data from AWS S3.
- Built distributed PySpark pipelines for transforming structured and semi-structured data into ACID-compliant Delta tables.
- Designed Medallion Architecture (Bronze → Silver → Gold) with incremental processing for reliable and optimized data consumption.
- Improved performance by 25–30% using partitioning, caching, broadcast joins, and Spark optimization techniques.
- Led migration from Informatica/SSIS to Databricks + Snowflake, redesigning ETL into scalable cloud-native pipelines.
- Implemented data quality frameworks, PII masking, and governance controls, ensuring >99.9% data accuracy.
- Built a GenAI-based RAG POC on Databricks, enabling natural language querying of enterprise datasets using LLMs and vector-based retrieval.
LTM (Formerly LTIMINDTREE)
Data Engineer
11.2021 - 09.2024
Job overview
- Designed and developed scalable ETL pipelines using Informatica IICS/CDI and Snowflake, enabling efficient ingestion and transformation of enterprise insurance data.
- Implemented Snowflake data warehousing solutions, including schema design, data modeling, and query optimization using clustering techniques.
- Improved ETL performance by over 30% through pushdown optimization, efficient SQL design, and parameterized workflows.
- Developed business-ready data marts in Snowflake for underwriting, claims, and fraud analytics.
- Implemented data validation, reconciliation, and audit frameworks, ensuring data accuracy and consistency across systems.
Birlasoft
Senior ETL Developer
11.2018 - 11.2021
Job overview
- Developed and maintained ETL workflows using Informatica PowerCenter for large-scale insurance datasets.
- Built and optimized SQL/PLSQL logic in Oracle for complex data transformations.
- Improved ETL performance by ~35% using query optimization, indexing, and workflow tuning.
- Implemented reusable components and parameterized workflows to enhance scalability.
- Performed data validation and reconciliation, ensuring >99.8% data accuracy.
Cognizant Technologies Solutions
Programmer Analyst
07.2014 - 01.2017
Job overview
- Developed ETL workflows using Informatica PowerCenter for insurance data processing.
- Wrote and optimized SQL (Oracle/SQL Server) for data transformation and validation.
- Supported batch processing, data integration, and production issue resolution.
Education
Krishna Engineering CollegeGhaziabad, India
Bachelor of Technology from Computer Science
06-2014
Timeline
Databricks Certified Data Engineer Associate
02-2026
Databricks Certified Generative AI Engineer Associate
02-2026
Senior Data Engineer
LTM (Former LTIMINDTREE)
10.2024 - Current
Cloud Data Integration for PowerCenter Developers – Foundation Certificate
07-2024
Microsoft Certified: Fabric Analytics Engineer Associate
06-2024
Data Engineer
LTM (Formerly LTIMINDTREE)
11.2021 - 09.2024
Senior ETL Developer
Birlasoft
11.2018 - 11.2021
Programmer Analyst
Cognizant Technologies Solutions
07.2014 - 01.2017
Krishna Engineering College
Bachelor of Technology from Computer Science
Availability
See my work availability
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