Citi is seeking a Senior Technologist to develop the next-generation analytics platform for the Market Risk organization. This role involves working closely with front-office and risk quants to tackle complex financial data challenges using big data technologies like Apache Spark. The successful candidate will architect and build robust data pipelines and intelligent APIs to enhance data accessibility and analytical capabilities. This position offers the opportunity to make a significant impact on risk-based calculations and support senior stakeholders in making informed decisions.

• A degree in a quantitative or technical field such as Computer Science, Financial Mathematics, or Financial Engineering.
• Expert-level, hands-on experience with big data technologies, particularly Apache Spark.
• Proven experience with high-performance OLAP databases such as Apache Pinot, Apache Druid, or Trino.
• Strong programming skills in Python, Java, and/or Scala, and expert-level SQL.
• Strong background in fundamental computer science concepts, including data structures and algorithms.
• Experience or a strong interest in applying Natural Language Processing (NLP) to data access and analytics.
• Experience in the financial industry with an understanding of market risk, derivatives, and risk calculations is highly desirable.

• Architect and build robust, scalable data pipelines to ingest and process billions of trade-level PV calculations from various stress engines.
• Develop and optimize large-scale aggregation jobs using Apache Spark, ensuring high performance and efficiency.
• Design and deliver a suite of intelligent data APIs that provide flexible, on-demand access to both aggregated and non-aggregated risk data.
• Integrate Natural Language Processing (NLP) capabilities to create intuitive, query-based interfaces for data exploration.
• Load and model massive aggregated datasets into high-performance OLAP engines like Apache Pinot, Apache Druid, and Trino.
• Build powerful, interactive analytical tools and dashboards on top of the OLAP layer.
• Partner directly with senior stakeholders in the Front Office, Quantitative teams, and Risk Management to understand their analytical needs.

• Citi offers a comprehensive benefits package including competitive pay, stock programs, healthcare coverage, retirement plans, paid time off, parental leave, and programs supporting employee wellbeing and professional development.