Sandip Das

About Sandip Das

Python Backend Developer with 4.4+ years of experience designing scalable, production-grade backend systems and AI-powered applications. Strong expertise in Python, RESTful API architecture, microservices, distributed systems, and AWS cloud infrastructure. Experienced in deploying LLM-driven intelligent systems and automating large-scale production workflows. Proven track record of improving system reliability, performance, and cloud cost efficiency by up to 30%

Experience

1. Python Developer

   Tata Consultancy Services

   Apr 2023 — Present · Kolkata, IN

   Designed and architected scalable RESTful APIs using FastAPI and Flask, Reduced API latency by 40% and increased throughput by 25%• Built cloud-native microservices deployed on AWS (ECS/EC2) using Docker and Kubernetes with auto-scaling and monitoring.• Integrated ML and LLM-based solutions into production systems for automated decision workflows and data validation pipelines.• Developed Agentic AI systems capable of multi-step task execution using RAG and prompt engineering.• Implemented CI/CD pipelines using Jenkins and Git, enabling faster and reliable deployments.• Designed optimized database access layers using SQLAlchemy ORM with query performance tuning.• Led AWS cost optimization initiative by identifying underutilized resources and implementing S3 lifecycle policies, reducing annual cloud expenditure by 30%.• Improved system reliability by implementing monitoring and alerting mechanisms using CloudWatch.• Designed a comprehensive Disaster Recovery Management System that reduced potential system restoration time and can be performed with single Job execution. By implementing automated health checks and traffic rerouting, I mitigated the risk of single-region outages and improved overall system reliability to 99.99% uptime

Education

• Assam (Central) University

  b.tech, Computer Science