Senior Tech Lead: Risk Analytics & Big Data Architect

Citigroup Inc.; Jersey City (NJ); On-site; USD 177,000 - 265,000; Full time

Job summary

Citi is seeking a Senior Technologist to design and build the next-generation risk analytics platform in Jersey City, NJ. You will transform PV outputs from risk engines into strategic data assets, enabling fast, global access and insights.

Lead data pipelines, high-performance aggregation, and intelligent APIs; apply NLP to data access and deliver user-friendly analytics for senior Front Office, Quantitative, and Risk stakeholders.

Qualifications

• Bachelor’s degree in a quantitative/technical field.
• Expert-level experience with big data technologies, especially Apache Spark.
• Experience with high-performance OLAP databases like Pinot, Druid or Trino.
• Strong programming skills in Python, Java and/or Scala; expert SQL.

Responsibilities

• Architect and build robust, scalable data pipelines to ingest and process billions of PV calculations.
• Develop and optimize large-scale aggregation jobs using Apache Spark for high performance.
• Design and deliver intelligent data APIs for on-demand access to risk data.
• Integrate NLP capabilities to create intuitive query-based interfaces for data exploration.
• Load and model massive aggregated datasets into OLAP engines like Pinot, Druid, Trino.
• Build interactive analytical tools and dashboards over the OLAP layer.

Skills

Big data analytics

Data pipelines

NLP

AI-first development

Problem solving

Communication

Education

Bachelor’s degree

Tools

Apache Spark

Apache Pinot

Apache Druid

Trino

Python

Java

Scala

SQL

Job description

Citi is seeking a Senior Technologist to design and build the next-generation risk analytics platform in Jersey City, NJ. You will transform PV outputs from risk engines into strategic data assets, enabling fast, global access and insights.

Lead data pipelines, high-performance aggregation, and intelligent APIs; apply NLP to data access and deliver user-friendly analytics for senior Front Office, Quantitative, and Risk stakeholders.