Himel Das

• Build backend services and REST APIs with Python, FastAPI, PostgreSQL, and AWS. • Optimize API response times, database schemas, queries, and data retrieval patterns. • Develop ETL pipelines and Airflow DAG alerts for reliable data workflows. • Provision and maintain AWS infrastructure with Terraform and CI/CD automation. • Improve test coverage, deployment quality, observability, and production reliability.

• Built backend services with Python, Django, PostgreSQL, AWS, and REST APIs. • Supported platforms serving 20K+ monthly active users with reliable backend systems. • Improved large-scale time-series data processing performance by 12x. • Managed 4 AWS Serverless microservices with CI/CD, monitoring, and 99.99% uptime. • Used data analysis to optimize allocation and reduce license costs by 4.61%.

• Modernized 10+ Python packages to meet Dolby External Release Guidelines. • Wrote unit and integration tests with PyTest, reaching 95% test coverage. • Built automated testing workflows for Python packages in CI/CD pipelines. • Improved release quality with regression tests, quality gates, and documentation. • Partnered with QA and engineering teams to strengthen Python test automation.

• Developed Python scripts for SHA-256 checksums and secure file integrity checks. • Engineered Python middleware for header and binary application data processing. • Configured and optimized drivers for FreeRTOS-based automotive hardware. • Built software components for IoT device validation and embedded integrations. • Collaborated with embedded teams on reliable automotive engineering workflows.