Big Data Engineer - (Scala | Spark | Databricks | Cloud)

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.

We are seeking a talented and experienced Big Data Hadoop Developer to join our growing data engineering team. The ideal candidate will have 4-6 years of hands-on experience designing, developing, and optimizing big data solutions using the Hadoop ecosystem, with a strong focus on Apache Spark. You will be responsible for building and maintaining scalable data pipelines, processing large datasets, and collaborating with data scientists and analysts to deliver insights.
Responsibilities:

• Design, develop, and maintain robust and scalable ETL processes and data pipelines using Apache Hadoop and Apache Spark.
• Write efficient, clear, and well-documented code primarily in Scala, Python, or PySpark for big data processing.
• Implement data ingestion, transformation, and loading routines from various sources into Hadoop Distributed File System (HDFS) and other big data stores.
• Optimize existing Spark jobs and Hadoop ecosystem components for performance and scalability.
• Collaborate with data architects, data scientists, and other stakeholders to understand data requirements and translate them into technical solutions.
• Ensure data quality, integrity, and security across all big data platforms.
• Participate in code reviews, testing, and deployment of big data applications.
• Troubleshoot and resolve issues in big data environments.
• Stay up-to-date with the latest trends and technologies in the big data ecosystem.

Qualifications:

• Bachelor's or Master's degree in Computer Science, Engineering, or a related quantitative field.
• 3-4 years of professional experience in Big Data development.
• Proven experience with the Hadoop ecosystem, including HDFS, YARN, Hive, and other related technologies.
• Hands on experience in SQL and shell scripting
• Strong expertise in Apache Spark for data processing and analysis.
• Proficiency in at least one of the following programming languages: Scala, Python, or PySpark.
• Experience with building and optimizing large-scale data pipelines.
• Familiarity with data warehousing concepts and ETL methodologies.
• Solid understanding of distributed computing principles.
• Excellent problem-solving skills and attention to detail.
• Ability to work independently and as part of a collaborative team.

Preferred Qualifications:

• Experience with cloud-based big data services (e.g., AWS EMR, Azure HDInsight, Google Cloud Dataproc).
• Experience with Databricks platform.
• Knowledge of other big data tools like Kafka, HBase, Flink, or Presto.
• Experience with SQL and NoSQL databases.
• Familiarity with CI/CD practices and tools (e.g., Git, Jenkins).
• Understanding of machine learning concepts and how they apply to big data.

Education:

• Bachelor’s degree/University degree or equivalent experience

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

------------------------------------------------------

------------------------------------------------------

------------------------------------------------------

------------------------------------------------------

------------------------------------------------------

------------------------------------------------------

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.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.
View Citi’s EEO Policy Statement and the Know Your Rights poster.