Open to opportunities

Achchutha Rengan

@achchutharengan

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Software engineer specializing in .NET and React, delivering reliable web apps.

India

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What I'm looking for

I’m looking for opportunities where I can analyze, design, and develop software end-to-end using .NET and React. I thrive in a team culture, enjoy learning new technologies, and want real challenges that help me grow.

I’m a Software Engineer with 5.2 years of experience analyzing, designing, and developing software applications. I enjoy building dependable systems and I’m a team player who stays highly motivated and open to learning new technologies.

At Societe Generale in Bangalore, I worked on a Carmarket remarketing public-facing car bidding platform serving 47 countries. I supported development across multiple APIs and applications, including live bidding updates and a separate option for companies to initiate and deploy remarketing with approval-style workflows.

At Samsung Electro Mechanics, I built and shipped multiple .NET + React solutions, including a .NET 8 MVC app with a React UI for XML-driven file operations and live progress updates. I also developed a .NET Core 9 Web API with a React front end for file versioning and deploy approvals integrated with Samsung SSO, handling single and bulk uploads.

Before that, at HTC Global Services, I contributed across several projects—from Checkwriter (.NET CORE 6 MVC) and insurance software transitions from Visual Basic to C#, to Audit jobs, GLFeed, and console tooling. I also created an open-source WinForms password manager using encryption, installers, and secure local storage, and I continuously seek challenging work that pushes me to grow.

Experience

Work history, roles, and key accomplishments

Current

Senior Engineer

Current

Societe Generale

Dec 2025 - Present (7 months)

Developed a Carmarket remarketing public-facing car bidding platform with APIs supporting bidding across multiple countries and live bidding status updates. Also supported a separate company-facing platform for initiating and deploying remarketing campaigns with live updates.

C#React WebSockets SQL Server Azure Blob Storage APIs

Senior Engineer

Samsung Electro Mechanics

Aug 2024 - Dec 2025 (1 year 4 months)

Built a .NET 8 MVC app with a React UI to read XML files from file servers, display information, and deploy selected files with live progress updates. Implemented pages for History, Deploy, Multi-Deploy, Settings, and Login/Users.

.NET 8+C#React WebSockets XML SQL Server

Insurance Engineer

HTC Global Services

Feb 2021 - Aug 2024 (3 years 6 months)

Developed the Checkwriter web application from scratch using .NET Core 6 MVC for approving and verifying checks. Worked on Web API and application controllers/models, database connectivity, React front-end state management, SSRS reporting, and Azure DevOps CI/CD pipelines.

.NET Core Web APIs C#React ADO.NET Azure Pipelines CI CD Models and Controllers

Mona: Password Manager

Open Source

Designed and developed a WinForms password manager using a local database with an installer for Windows deployment. Implemented encryption and hashing for stored user data, admin USB authentication, and export functionality for decrypted passwords.

WinForms Local Database Bcrypt 3DES Encryption Password CRUD USB Authentication Adobe XD Advanced Installer

Betting Engineer

HTC Global Services

Converted legacy systems from .NET Framework 3 to modern .NET Core full-stack applications with security-focused Web APIs. Developed new modules to automate previously manual workflows and built MVC applications that consume .NET Core 6 APIs.

.NET Framework .NET Core Web APIs Security