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Sujith Nair

@sujithnair

Senior Data Engineer at Citibank building AWS data pipelines for cybersecurity analytics and reusable Python validation tools.

United States
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At Citibank Ltd, I develop AWS Glue pipelines for security scan logs and user-access data, supporting downstream cybersecurity analytics. I also created reusable Python components for cleansing, reconciliation, duplicate detection, and source-to-target mapping validation.

At First Citizens Bank, I designed a hybrid data platform connecting Amazon S3 with AWS RDS, Netezza, and Amazon Redshift. I implemented reusable ETL pipelines that improved ingestion speed by 40% and used Apache Airflow to orchestrate data-loading workflows.

Across banking, insurance, and media projects, I’ve delivered cloud data integration and reporting with AWS and Azure. My work has included developing 40+ Cognos reports at Citibank and building ETL and analytics solutions with tools such as PySpark, Power BI, QlikSense, and IBM DataStage.

Experience

Work history, roles, and key accomplishments

Citibank Ltd logoCL
Current

Specialist Data Engineer

Jan 2025 - Present (1 year 10 months)

Developed ingestion and transformation pipelines for an Amazon S3-based data lake using AWS Glue, processing security scan logs and user-access datasets for downstream cybersecurity analytics. Collaborated with governance, InfoSec, and business stakeholders to translate cybersecurity reporting needs into data transformation rules and analytical deliverables.

First Citizens Bank logoFB

Specialist Data Engineer

May 2021 - Dec 2024 (3 years 7 months)

Designed and implemented a hybrid data platform integrating an Amazon S3-based data lake with AWS RDS, Netezza, and Amazon Redshift to support centralized financial analytics. Developed modular batch ETL pipelines and optimized complex SQL queries to integrate financial datasets and improve ingestion speed by 40%.

Old Mutual Bank logoOB

Senior Software Engineer

Nov 2019 - May 2021 (1 year 6 months)

Developed AWS Glue ETL pipelines using PySpark to integrate heterogeneous source datasets, apply cleansing rules, and load a centralized Lakehouse architecture using Amazon S3 and Amazon Redshift Spectrum. Developed Amazon QuickSight analytical models and interactive dashboards for fiscal-year growth tracking and ROI analysis.

Westpac Bank logoWB

Technology Analyst

Mar 2018 - Sep 2019 (1 year 6 months)

Designed a four-tier AWS data architecture using Amazon S3, Redshift, and Lambda to support QlikSense analytics, improving data-loading speed by 40%. Developed automated JIRA ingestion workflows using AWS Glue and Lambda and delivered interactive QlikSense dashboards with KPI, Gantt, and trend visualizations.

Lincoln Financial Group logoLG

Programmer Analyst

Lincoln Financial Group

Jan 2016 - Feb 2018 (2 years 1 month)

Developed hybrid ETL workflows utilizing Azure Data Factory (ADF) SSIS Integration Runtime, Azure Data Lake Storage (ADLS Gen2), and Azure SQL Database to integrate data across five heterogeneous database platforms, maintaining 99% data integrity. Implemented CDC-based incremental integration workflows using SQL Server Agent and developed Power BI analytical models and charts.

News Corp Australia logoNA

Programmer Analyst

News Corp Australia

Jan 2014 - Jan 2016 (2 years)

Designed and implemented a reusable data integration framework using IBM DataStage parallel jobs to extract and process high-volume datasets from heterogeneous source systems. Orchestrated automated data loads into Vertica target databases, leveraging its columnar storage architecture to optimize performance for complex analytical querying.

Education

Degrees, certifications, and relevant coursework

Amazon Web Services logoAS

Amazon Web Services

AWS Solution Architect - Associate, Cloud Architecture

2026 - 2026

Earned the AWS Solution Architect - Associate certification in October 2026.

Anaconda logoAN

Anaconda

Python for Data Science Professional Certificate, Data Science

2026 - 2026

Earned the Anaconda Python for Data Science Professional Certificate in July 2026.

Microsoft logoMI

Microsoft

Microsoft Data Fundamentals (DP-900), Data Fundamentals

2022 - 2022

Earned the Microsoft Data Fundamentals (DP-900) certification in January 2022.

Microsoft logoMI

Microsoft

Microsoft Azure Fundamentals (AZ-900), Cloud Fundamentals

2021 - 2021

Earned the Microsoft Azure Fundamentals (AZ-900) certification in October 2021.

SS

Shri Vaishnav Institute of Technology and Science

Bachelor of Engineering, Electronics and Telecommunications

2009 - 2013

Grade: 68.9%

Bachelor of Engineering in Electronics and Telecommunications from Shri Vaishnav Institute of Technology and Science, affiliated to RGPV University, with an achievement of 68.9%.

MS

Marthoma Higher Secondary School

Higher Secondary Certificate, Higher Secondary

2007 - 2008

Grade: 84.2%

Completed Higher Secondary Certificate Examination with an achievement of 84.2%.

MS

Marthoma Higher Secondary School

Senior Secondary Certificate, Senior Secondary

2005 - 2006

Grade: 85%

Completed Senior Secondary Certificate Examination with an achievement of 85%.

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