Spark Developer - C10 - Chennai
Citi Bank
2 - 5 years
Chennai
Posted: 16/09/2025
Job Description
Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.
Job Overview
ETL Developer will be responsible for designing, implementing, and optimizing distributed data processing jobs to handle large-scale data in Hadoop Distributed File System(HDFS) using Apache Spark and Python. This role required deep understanding of data engineering principles, proficiency in Python and hands-on experience with Spark and Hadoop ecosystems. Developer will collaborate with data engineers, analysts, and business stakeholders to process, transform and drive insights and data driven decisions.
Responsibilities:
Data Processing and Transformation:
Design and Implement of Spark applications to process and transform large datasets in HDFS.
Develop ETL Pipelines in Spark using Python for data Ingestion, cleaning, aggregation, and transformations.
Performance Optimization:
Optimize Spark jobs for efficiency, reducing run time and resource usage.
Finetune memory management, caching, and partitioning strategies for Optimal performance
Data Engineering with Hadoop and Spark:
Load data from different sources into HDFS, ensuring data accuracy and integrity.
Integrate Spark Applications with Hadoop frameworks like Hive, Sqoop etc.
Testing and debugging:
Troubleshoot and debug Spark Job failures, monitor job logs, and Spark UI to Identify Issues.
Qualifications:
- 2-5 years of relevant experience
- Experience in programming/debugging used in business applications
- Working knowledge of industry practice and standards
- Comprehensive knowledge of specific business area for application development
- Working knowledge of program languages
- Consistently demonstrates clear and concise written and verbal communication
Expertise in handling complex large-scale Warehouse environments
• Hands-on experience writing complex SQL queries, exporting and importing large amounts of data using utilities
Education:
- Bachelor's degree in a quantitative field (such as Engineering, Computer Science) or equivalent experience
About Company
Citi Bank, officially known as Citibank, is a global financial institution and the consumer division of Citigroup, a leading multinational banking corporation. Established in 1812, Citibank provides a wide range of financial services, including retail banking, credit cards, personal loans, wealth management, and investment banking. With a strong presence in over 100 countries, it serves millions of customers worldwide, offering both individual and business banking solutions. Citibank is known for its digital banking innovations, global reach, and commitment to financial inclusion and economic growth.
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