Migrating existing monolithic architecture to several microservices using servereless applications.

Refactoring legacy codes and converting to more manageable and modular using best practices i.e. TDD, DDD, git-flow, Agile, SDLC etc.

Developing server-less applications using micro-service architecture on AWS Lambda.

Maintaining code quality and correctness by ensuring test coverage more than 85%, peer code review.

Developing Python, npm packages to reuse common functionalities across applications.

Technologies: Python, Node.js(Javascript, TypeScript), Serverless framework, AWS, MongoDB, DynamoDB

Developed highly scalable distributed systems and maintained high availability by auto-scaling and load-balancing.

Reduced almost 45% cost of using AWS services by changing the architecture like using AWS Fleet, choosing optimal instance types

Developed real-time map location-based applications like vehicle tracking solution

Technologies: Python, Django, Elasticsearch, Redis, Node.js, Celery, AWS

Developed online hotel, bus, flight booking system, amarroom.com, for customers as a B2C model and provide API to dealer/agent as a B2B model

Developed a cloud-based multi-tenant hotel management ERP as SaaS model.

Developed multi-tenant accounting, inventory and point of sale.

Developed online micro- finance solution for financial institutions

Technologies: Python, Django, jQuery, AWS, Elasticsearch, Vue.js, Riot.js