Dharanidharan Loganathan

About

Backend/data engineer with production experience building secure Django/DRF APIs (JWT RS256 + rotating refresh tokens), background processing with Celery, and strong reliability practices (timeouts, retries/backoff, structured logging, audit trails). Has delivered AWS solutions spanning Lambda + ECS with IaC/CI-CD and built Glue/PySpark ETL pipelines with schema evolution and data-quality quarantine patterns; also modernized a legacy SAS pipeline to Python/PySpark with parallel-run parity validation and phased rollout.

Experience

Education

Key Strengths

• Designed secure Django/DRF APIs with thin views + service layer for testability
• Implemented short-lived RS256 JWT auth with rotating refresh tokens and permission mapping
• Built reliable integrations with explicit timeouts, retries/backoff, and idempotent background processing (Celery)
• Delivered AWS serverless + container solutions (Lambda + ECS) with IaC (CloudFormation/Terraform) and CI/CD
• Managed secrets/config securely using Secrets Manager and IAM roles
• Built AWS Glue PySpark ETL with raw/processed S3 layers, schema controls, and quarantine of invalid records with reason codes
• Modernized legacy SAS pipelines to Python/PySpark using parallel runs and stakeholder sign-off dashboards
• Improved SQL performance by eliminating full table scans and fixing indexes/late filtering (10–15 min to <3 min)
• Owned pipeline incident response using CloudWatch alerts/logs; added early schema/size validation to prevent recurrence