Divya Kailasanathan

Results-driven Full-Stack Developer with over 4 years of experience specializing in C# .NET, ASP.NET Core, and React.js. Expertise in building scalable web applications, RESTful APIs, and real-time monitoring systems, complemented by a strong track record in performance optimization, ERP solutions, and industrial automation applications. Highly skilled in collaborating within Agile teams to deliver reusable components while ensuring robust security through JWT/OAuth 2.0 authentication. Recognized for proficiency in frontend UI design, backend architecture, API integration, and a commitment to delivering high-quality solutions that drive business growth.

Project 1: Hydrogen Generator

Project Description:
Led full-stack development of a real-time monitoring system for hydrogen production from chemical solutions.

Technologies:
.NET Core, C#, Entity Framework Core, SQL Server, React.js, TypeScript, Material UI, Axios, Chart.js

Key Responsibilities:

• Gathered requirements and delivered intuitive UI screens.
• Integrated APIs to display real-time PLC values, achieving seamless data updates every 2 seconds.
• Built Web APIs with clean architecture, utilizing DTOs and service layers for maintainability.

Project 2: ERP System – Full Stack Development

Project Description:
Developed a scalable ERP system covering modules such as Customer, Purchase, Vendor, Contact, and Opportunities. Enabled businesses to manage end-to-end procurement and customer relationship workflows. The application followed Onion Architecture to enforce separation of concerns and maintainability, with a RESTful API backend and React.js frontend.

Technologies:
.NET Core, C#, Entity Framework Core, SQL Server, React.js, TypeScript, Material UI, Axios, Chart.js

Key Responsibilities:

• Designed and implemented domain-driven ERP modules (Customer, Purchase, Vendor, Contact, Quotes, Invoices) using Onion Architecture (Domain, Application, Infrastructure, Presentation layers).
• Developed RESTful APIs in .NET Core with Repository & Unit of Work pattern, DTOs, AutoMapper, and FluentValidation.
• Implemented CRUD operations, search APIs, and dropdown APIs for master data management (e.g., Customer States, Status, Industry, Source).
• Applied Entity Framework Core for data persistence and designed normalized relational schemas with SQL Server.
• Integrated caching strategies to optimize API performance for frequently accessed data (e.g., customer list, dropdowns).
• Built dynamic, reusable UI components in React.js with Formik, Yup, Material UI, and @tanstack/react-table for data listing, filtering, pagination, and modal-based forms.
• Implemented role-based access control and secure API endpoints with JWT authentication.
• Created interactive reports and dashboards using Chart.js with zoom, filter, and export functionalities.
• Collaborated with cross-functional teams in Agile methodology; performed code reviews, wrote unit tests, and ensured CI/CD integration.

Project 3: Organic Rankine Cycle (ORC)

Project Description:
ORC systems utilize waste heat from industrial processes (such as gas engine exhausts) to generate additional electrical power.

Technologies:
.NET Core, C#, Entity Framework Core, SQL Server, React.js, TypeScript, Material UI, Axios, Chart.js

Key Responsibilities:

• Designed and implemented responsive, user-friendly UI screens using React.js, enhancing user experience for real-time monitoring.
• Integrated RESTful APIs to display live PLC data, reducing data retrieval latency by 20%.
• Integrated PLC data sources for real-time monitoring, ensuring 99.9% data accuracy.
• Built dynamic charts and visualizations using Chart.js for performance metrics, improving stakeholder decision-making.
• Developed secure RESTful APIs using Onion Architecture, improving code maintainability and scalability.
• Implemented JWT-based authentication and role-based authorization.