Data Engineer - ETL/PySpark (Banking Domain)

GSSTech Group; Bengaluru; On-site; INR 1,500,000 - 2,800,000; Full time

Job summary

GSSTech Group in Bengaluru is seeking a hands-on Data Engineer with strong PySpark and Python to build and maintain data marts and ETL pipelines in a banking environment. The role requires ownership of the full SDLC from build through UAT, production deployment, and post-production support.

Responsibilities include designing ETL pipelines, writing robust code, performing Oracle SQL analysis, and working with diverse data sources while adhering to CI/CD practices and data validation standards.

Qualifications

• 5+ years commercial experience in a data-driven role.
• Hands-on experience building data marts and ETL pipelines
• Expert level Python for ETL scripting
• Strong PySpark experience
• Analytical expertise in Oracle SQL and data analysis
• Understanding of software engineering concepts and best practices for production pipelines
• Banking client or banking domain knowledge
• Strong Data Warehousing fundamentals
• Familiarity with query languages and both SQL and NoSQL database technologies
• CI/CD exposure, including testing and validation of data pipelines

Responsibilities

• Design, build, and maintain ETL pipelines and data marts using PySpark and Python
• Write clean, maintainable, and robust production-grade code
• Own end to end SDLC activities: build, UAT, UAT bug fixes, production deployment, and postproduction support
• Perform Oracle query analysis and PySpark code debugging
• Work across structured, semi structured, and unstructured data sources
• Apply software engineering best practices to production pipelines
• Support CI/CD processes and data testing/validation activities

Skills

PySpark

Python

SQL

NoSQL

Data Warehousing

CI/CD

Data Modeling

Banking domain knowledge

ETL pipelines

Tools

Hadoop

Hive

Jupyter

Job description

Role Summary

We are looking for a hands-on Data Engineer with strong PySpark and Python expertise to build and maintain data marts and ETL pipelines within a banking environment. The ideal candidate owns the full SDLC, from build through UAT, bug fixing, production deployment, and postproduction support.

Key Responsibilities

• Design, build, and maintain ETL pipelines and data marts using PySpark and Python
• Write clean, maintainable, and robust production-grade code
• Own end to end SDLC activities: build, UAT, UAT bug fixes, production deployment, and postproduction support
• Perform Oracle query analysis and PySpark code debugging
• Work across structured, semi structured, and unstructured data sources
• Apply software engineering best practices to production pipelines
• Support CI/CD processes and data testing/validation activities

Required Skills & Experience

• 5+ years commercial experience in a data-driven role
• Hands-on experience building data marts and ETL pipelines
• Expert level Python for ETL scripting
• Strong PySpark experience
• Analytical expertise in Oracle SQL and data analysis
• Understanding of software engineering concepts and best practices for production pipelines
• Banking client or banking domain knowledge
• Strong Data Warehousing fundamentals
• Familiarity with query languages and both SQL and NoSQL database technologies
• CI/CD exposure, including testing and validation of data pipelines

Daily Tech Stack

• Python
• Spark / PySpark
• Jupyter
• SQL and NoSQL DBMS
• Hadoop / MapReduce / Hive
• Pandas