Senior Python Backend Developer

Worked for Mastercard on a payment-scale threat intelligence and fraud prevention platform integrating global fraud signals and cyber threat intelligence across the APAC region.

Designed, developed, and tested Django REST Framework backend components and validation workflows. Performed REST API, database, functional, smoke, and UAT testing to validate fraud detection logic, error handling, transaction data integrity, and end-to-end platform stability.

Optimized AWS S3 object listing through aioboto3 using paginated parallel processing and dynamic batch sizing. Tested and monitored AWS Lambda workflows, managed secure transaction-log storage, and supported CI/CD build validation and test execution through Git, GitHub, and GitHub Actions.

Developed intelligent automation solutions for healthcare applications and operational processes using Python, Django, Pandas, NumPy, PyAutoGUI, PyWinAuto, and Selenium WebDriver.

Built Django REST Framework CRUD APIs for inventory workflows, implemented authentication, authorization, and RBAC, and developed reusable modules for product, order, inventory, and supplier management. Created responsive Django templates using HTML, CSS, and Bootstrap, optimized SQL queries, and implemented ORM transactions.

Created data processing, cleansing, transformation, validation, and analysis workflows for healthcare datasets. Automated desktop application activities, wrote Pytest unit tests, and managed source control and team collaboration using Git and GitHub.

Worked on the Bank of America Data Integration & Analytics Platform, developing scalable financial data ingestion, transformation, and reporting solutions using Python and Azure services.

Designed end-to-end ETL pipelines in Azure Data Factory to ingest data from multiple banking systems into Azure Data Lake. Developed high-performance FastAPI services for downstream analytics and reporting, and built data cleansing and transformation workflows with Pandas, NumPy, and SQL.

Optimized large-scale Databricks processing workloads with PySpark, implemented data quality checks and anomaly validation frameworks, and collaborated with data architects and business analysts on schemas, transformation logic, and regulatory reporting requirements. Used Git and GitHub for version control, reviews, and CI/CD workflows.

Developed a secure digital loan origination and processing system for ICICI Bank, covering customer onboarding, KYC verification, credit scoring, loan eligibility, approval, document handling, and loan disbursal workflows.

Built modular Django applications and REST APIs for loan applications, KYC, onboarding, and loan approvals. Integrated CIBIL credit bureau APIs, implemented JWT authentication and RBAC, and developed automated financial rule engines for eligibility and approval decisions.

Configured GitHub and Jenkins CI/CD pipelines for automated builds, testing, and deployment. Managed secure AWS S3 document storage using pre-signed URLs, wrote complex SQL for real-time reports and analytics, collaborated with React developers, and participated in Agile ceremonies with business stakeholders.