The Applications Development Technology Lead Analyst is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities.

Key Responsibilities
Architecture & Design
- Design and implement scalable, fault-tolerant batch and real-time data processing pipelines.
- Develop robust data models and schema designs optimized for both performance and storage efficiency.
- Evaluate and integrate emerging tools and frameworks (e.g., Spark, Flink, Kafka) into the existing stack.
- Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
- Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals

Data Modernization & Migration Leadership
- Legacy Systems Decommissioning: Lead the strategic migration of data and logic from legacy platforms (e.g. on-premises SQL Servers)



to a contemporary Data Lakehouse environment.
- ETL/ELT Transformation: Re-engineer existing stored procedures and complex legacy ETL jobs into scalable, distributed processing frameworks using Spark (Python) and Starburst/Trino.
- Validation & Parity Testing: Design and implement automated frameworks for Data Parity Testing to ensure 100% accuracy and consistency between legacy outputs and new big data results.
- Schema Evolution: Map and transform rigid, legacy relational schemas into flexible, high-performance formats optimized for the cloud (e.g., Parquet, Avro, or Iceberg).
- Phased Cutover Management: Orchestrate a phased migration strategy (Parallel Run, Shadow Execution) to ensure zero downtime for downstream business applications and reporting tools.
- Performance Benchmarking: Establish performance baselines on legacy systems and ensure the new Big Data architecture meets or exceeds those be

📌 Big Data (Pune Division)
🏢 Citi
📍 Pune Division