Jishnu Sanyal

Served as Senior Software Developer and Feature Lead on Tally Billing, a scalable, cloud-native SaaS platform for multi-utility billing, customer management, and advanced analytics in C&I and residential energy markets.​

Key Responsibilities

• Led design and implementation of billing platform features, focusing on utility, C&I, energy retail, and distributed resources billing.​
• Architected and developed event-driven microservices using C# and .NET Core, ensuring robust process orchestration and high-performance transaction handling.
• Built and integrated RESTful APIs to facilitate inter-service communication, third-party integrations, and market compliance.
• Implemented and optimized SQL Server databases to support advanced data management, tariff simulations, billing reconciliation, and reporting.
• Developed distributed and event-driven workflows leveraging Azure Event Hubs for scalable data processing and exception management.
• Delivered front-end modules using React and JavaScript for intuitive self-service, quote-to-contract, and detailed analytics dashboards.
• Designed and integrated Node.js microservices to connect with internal APIs and support advanced business logic.
• Collaborated with cross-functional teams to deploy market-compliant, secure, and scalable billing features aligned with industry best practices.

Ceridian (NodeJs, Expressjs,Dotnet Framework, C#, Azure, SQL Server)

-Ceridian is an American provider of human resources software and services with employees in the USA, Canada, Europe, Australia and Mauritius. It is a descendant of Control Data Corporation (CDC). Ceridian Approached Thoughtworks to evaluate their products code from a quality, maintainability, security stand point.


StormGeo (Dotnet Core, C#, Angular 7/8, SQL Server, NodeJs, Expressjs, FastReports)

-StormGeo is one of the largest privately held weather service providers worldwide. It provides meteorological services, particularly to the offshore, renewable energy, shipping, corporate enterprise and media industries. StormGeo approached Thoughtworks to break a huge monolithic codebase in micro services for scalability and maintainability purpose and digital transformation.


Neiman Marcus Group (Java, Spring Boot, ReactJS, NodeJs, Expressjs,)

- Neiman Marcus Group (NMG) is an American e-commerce website, dealing with luxury
clothing and accessories. NMG approached ThoughtWorks to revamp its global website to use microservices architecture for scalability.


Total Environment (C#, Dotnet Framework Azure, ReactJS, NodeJs, Expressjs, Three.js, PostgreSQL )

- Total environment (TE) is a real estate development company, focused on creating a high-quality experience in high-rise housing projects. In order to give seamless customer experience, TE approached ThoughtWorks to build a web platform that allows a customer to customize every detail of their house - from wall layouts and furniture layouts to materials and finishes.