Senior Data Engineer · Bangalore, India

Gaurab
Kumar Jha

Scalable Data Platforms · Distributed Systems · SQL Optimization

I build scalable, high-performance data systems that turn complex data into reliable, decision-ready assets at scale.

View Experience Get in Touch

11+

Years of Experience

Years Big Data & Cloud

JP
Morgan

Current Employer

∞

Drive to Learn

Who I Am

A bit about me

11+ years of experience as a JAVA, Python & Big Data Developer with deep expertise in scalable systems and cloud infrastructure. I specialize in designing and building robust data solutions that handle complex processing at scale.

8+ years in Big Data & Cloud Development — proficient in Batch and Near Real-Time Processing of clinical data, SSD/HDD test data, and enterprise workloads. Expert in Python, Shell scripting, SQL, and relational databases. Strong knowledge of dependency management tools like Apache Maven and Git for source control.

Hands-on experience with AWS (EMR, EC2, MSK, EKS, MWAA) and GCP/GKE, enabling cloud-native data solutions. Proven track record in designing and leading implementation of scalable applications and tools. Strong collaborator with excellent communication and problem-solving capabilities.

Experienced in mentoring and evaluating team members, conducting peer code reviews, managing releases, and deploying code to production environments. Known for maintaining high coding standards and translating complex requirements into reliable, production-grade solutions.

Name Gaurab Kumar Jha
Location Bangalore, Karnataka 560043
Email gaurabkjha@gmail.com
Phone +91 9923832293
Website gaurabjha.github.io
GitHub github.com/gaurabjha
LinkedIn linkedin.com/in/gaurabjha
Resume Download CV

Career

Professional Experience

Senior Data Engineer

JP Morgan Chase & Co.

Designed and maintained scalable data pipelines handling high-volume datasets, ensuring reliability and data consistency across the platform.
Optimized complex SQL workloads — joins, CTEs, window functions — significantly improving query performance and reducing compute costs.
Worked extensively with Databricks and Delta tables for efficient data storage, processing, and incremental data handling.
Built reusable data models and abstractions to standardize data access across teams and downstream consumers.
Collaborated with cross-functional stakeholders to convert business requirements into efficient, production-grade technical implementations.
Mentored, interviewed, and evaluated new hires and interns; led code reviews to maintain high engineering standards.
Handled responsibilities of Release and Deployment Manager for pushing code into production environments.

Highlights

Key Impact

⚡

Query Performance

Improved processing times dramatically through advanced SQL optimization — joins, window functions, and CTE restructuring.

🛡️

Data Reliability

Enhanced data correctness by systematically addressing null handling, inconsistencies, and schema evolution edge cases.

🏗️

Scalable Architecture

Contributed to architectural decisions improving maintainability, extensibility, and long-term platform scalability.

📊

Decision-Ready Data

Enabled faster decision-making by delivering clean, well-structured datasets to downstream consumers and business teams.

Toolkit

Technical Skills

Languages

SQL (Advanced) Java Python C# Ruby Shell Script

Data Platforms

Databricks Delta Lake Apache Spark Apache Kafka Apache Airflow Hive HBase HDFS

Cloud & Infrastructure

AWS EMR / EC2 GCP / GKE Kubernetes Docker MapR Zookeeper

Core Competencies

Data Modeling ETL / ELT Pipelines Performance Tuning System Design Fault Tolerance Data Quality

Dev Tools

Git Apache Maven Oozie Apache Storm Apache Crunch

Let's Connect

Get in Touch

I'm always open to interesting conversations about data engineering, distributed systems, or new opportunities. Feel free to reach out.

Prefer a direct message? Send me an email at gaurabkjha@gmail.com and I'll respond promptly.

You can also find my work and open-source contributions on GitHub, and connect professionally on LinkedIn.

Send a Message → Download Resume

Fun Project : Bill Splitter

GaurabKumar Jha