Open to opportunities

Tharangini Gajendran

@tharanginigajendran

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Data Engineer specializing in cloud-native ETL, analytics, and automation.

South Africa

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What I'm looking for

I seek a hands-on role building cloud-native data platforms and ETL pipelines, with collaborative teams, CI/CD practices, and opportunities to scale analytics for business impact.

I am a Data Engineer with hands-on experience building scalable, cloud-native data platforms and analytics solutions using AWS, Hadoop, and ETL tools. I design and implement end-to-end ETL pipelines, automate workflows with Step Functions and Lambda, and manage infrastructure as code with Terraform.

I have delivered production analytics and billing pipelines, automated deployments with CI/CD and container workflows, and created business dashboards in Metabase and Power BI to drive operational improvements and reduce penalties. I integrate GraphQL APIs, DynamoDB, S3, Redshift, and Talend for robust data ingestion, processing, and storage.

I bring strong analytical, communication, and collaboration skills, a quick ability to learn emerging technologies, and a track record of improving pipeline reliability through error handling, monitoring, and orchestration. I seek to apply these strengths to deliver reliable, scalable data solutions that enable data-driven decision-making.

Experience

Work history, roles, and key accomplishments

Current

Data Engineer

Current

CTG Databit

Jan 2020 - Present (6 years)

Designed and implemented cloud-native ETL and analytics pipelines for Mastercard billing events, consolidating 13 event types from Hadoop into Athena and delivering Metabase and Power BI dashboards that reduced penalties and improved operational insights.

AWS Step Functions AWS Glue Athena Hadoop Terraform Lambda SNS Metabase Power BI

Data Engineer

SecureKloud Technologies Limited

Dec 2024 - Aug 2025 (8 months)

Built scalable Talend ETL pipelines to ingest and transform data from Amazon S3 into Redshift, optimized Redshift COPY performance, and implemented error handling and monitoring for Roche data loads.

Talend Amazon S3 Redshift SQL Python DBeaver ETL Data Modeling

Backend/Data Engineer

CTG EYIL

Sep 2023 - Oct 2024 (1 year 1 month)

Developed e-commerce backend and analytics using Flask, Hadoop/Hive and AWS (EC2, RDS, S3), consolidated servers to reduce memory use by 50% and implemented clickstream analytics for personalized recommendations.

Python Flask Hadoop Hive AWS EC2 RDS S3 Kafka SQL

Data Engineer

CTG Databit

Jan 2022 - Jul 2023 (1 year 6 months)

Orchestrated ETL pipelines with AWS Step Functions, Glue and PySpark to automate validation, transformation and partitioning to S3, implementing Lambda/SNS error handling and Athena-optimized partitioning for performant analytics.

Pyspark AWS Glue AWS Step Functions Lambda SNS Amazon S3 Athena ETL Partitioning

Mobile Backend Engineer

Mobil80 Solutions

Mar 2020 - Nov 2021 (1 year 8 months)

Led development of asset-tracking and teleconsultation apps using Kotlin, AppSync/GraphQL and DynamoDB; integrated QR scanning, Cognito auth, S3 media storage and automated real-time sync for reliable mobile experiences.

Kotlin GraphQL AWS AppSync DynamoDB Amazon S3 Cognito QR ZXING Mobile Development

Education

Degrees, certifications, and relevant coursework

Veltech High Tech

Bachelor of Engineering, Computer Science and Engineering

Bachelor of Engineering in Computer Science and Engineering from Dr. Rangarajan Dr. Sakunthala Engineering College (affiliated with Veltech High Tech).