Raghwendra Kumar Singh
Noida
Summary
Result-driven Data Engineer with 1.5+ years of hands-on experience in designing and implementing data pipelines using Azure Data Factory, Databricks, and PySpark. Backed by 5.6 years as SQL Server DBA and 2.5 years in application maintenance, bringing a strong foundation in data integration, performance tuning, and operational excellence. Adept at end-to-end data flow implementation, automation, and troubleshooting in cloud and hybrid environments.
Overview
10
10
years of professional experience
1
1
Certification
Work History
Data Engineer
Tata Consultancy Services
Noida
03.2022 - Current
- I built a prototype in Databricks to ingest flat files, JSON, CSV and relation data into Delta Lake using PySpark, followed by transformation and storage in Parquet format.
- Stored output to Delta Lake, and used Power BI for dashboarding.
- Developed transformation logic in Databricks using PySpark, SQL, and registered Delta tables.
- Built an end-to-end pipeline with ADF using copy and data flow activities.
- Triggered pipelines with scheduled triggers, and monitored run history.
- Perform data cleansing, validation, and transformation tasks to ensure high-quality, analytics-ready data.
- Apply business logic and mapping rules using SQL, Python, or Spark-based frameworks.
- Work with relational databases (e.g., SQL Server) and cloud databases (e.g., Azure SQL) for data extraction and loading.
- Collaborate with data analysts, scientists, and business stakeholders to understand data needs, and deliver required datasets.
SQL Database Administrator
Havells India Ltd.
Noida
10.2018 - 03.2022
- Managed 100+ SQL Server databases, ensuring high availability, replication, and disaster recovery setups.
- Performed database installs, patching, upgrades, and performance tuning.
- Automated routine tasks (backups, index rebuilds, health checks) using PowerShell.
- Worked on DB jobs creation, maintenance, and scheduling.
- Performed database installs, patching, upgrades, and performance tuning.
- Works for SSRS and SSIS administrative work.
Application Maintenance Role
ABS & Quadlabs Technologies Pvt. Ltd.
Gurugram
06.2015 - 10.2018
- Provided support for .NET-based applications with a SQL backend.
- Collaborated with team members to develop maintenance schedules and procedures.
- Trained junior engineers on best practices for equipment maintenance and repair techniques.
- Efficiently executed shut downs for planned maintenance.
- Coordinated change deployments and post-deployment verifications.
- Deployment of objects on production and UAT servers with Engg. Teams.
- Worked on the end user issue, troubleshot the same, and escalated it to the development team if required.
Skills
- Programming and scripting: SQL, Pyspark, Python
- Data engineering tools: Databricks, Apache Spark, Delta Lake, Azure Data Factory
- Database management: SQL Server, Azure SQL
- ETL and data pipelines: ADF pipelines
- Cloud platforms: Azure (data lake, blob storage)
- Cloud platform: Azure Cloud, Databricks notebook
- Others: Power BI (basic reporting), Excel
Certification
- Azure Data Engineer Associate (DP-203)
- Udemy/LinkedIn Learning: Data Engineering with Python and Spark
Timeline
Data Engineer
Tata Consultancy Services
03.2022 - Current
SQL Database Administrator
Havells India Ltd.
10.2018 - 03.2022
Application Maintenance Role
ABS & Quadlabs Technologies Pvt. Ltd.
06.2015 - 10.2018
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