Senior Big Data Engineer

Citi is looking for a Senior Big Data Engineer to design, build, and optimize large-scale data pipelines and distributed data systems that power critical business intelligence across the organization. Based in Pune and operating in a hybrid model, you will work within a high-performing engineering team where your expertise in PySpark, the Hadoop ecosystem, and streaming data platforms will directly shape the reliability and performance of Citi's data infrastructure.

Responsibilities Build and maintain scalable data pipelines using PySpark within a Big Data environment to process and transform large volumes of structured and unstructured data. Design and develop solutions across the Hadoop ecosystem — including Hive, HDFS, Sqoop, Spark, Impala, and Scala — to enable efficient data ingestion, processing, and storage.

Develop and manage real-time and batch data workflows using streaming data platforms, ensuring high availability and low-latency data delivery. Write complex SQL queries to extract, validate, and analyze data across distributed systems, supporting data-driven decision-making.

Design and implement data models and data architecture patterns aligned with data warehouse principles, ensuring scalability, accuracy, and consistency. Automate pipeline scheduling and orchestration using shell scripting and Autosys, reducing manual intervention and improving operational reliability.

Independently identify, assess, and resolve technical risks and data issues in a timely manner, maintaining system integrity across the data platform. Required Qualifications & Skills 4 -7 years of relevant experience. Hands-on expertise in PySpark and Big Data processing, with the ability to build and optimize distributed data workflows at scale.

Practical knowledge of the Hadoop ecosystem, including Hive, HDFS, Sqoop, Spark, Impala, and Scala, applied in a production environment. Proficiency in complex SQL query development for data analysis, transformation, and validation across large datasets.

Solid understanding of distributed systems architecture and how data flows across interconnected processing layers. Demonstrated knowledge of data modelling and data design, with familiarity in data warehouse concepts and dimensional modelling techniques.

Competence in shell scripting and job scheduling using Autosys or equivalent workflow automation tools. Strong analytical and problem-solving ability, with a track record of working independently to diagnose and resolve complex data engineering challenges.

Clear and effective communication skills, with the ability to articulate technical concepts to both technical and non-technical audiences. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above. ------------------------------------------------------ Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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