Abhishek Kumar Thakur - Software Engineer - CGI

Summary

AI-Adaptive .NET Backend Engineer with 3.5+ years of experience designing and delivering enterprise-grade RESTful APIs and backend systems using C#, ASP.NET Core (.NET 6/8), Entity Framework Core, and SQL Server. Proven track record in enterprise tooling development, legacy modernization, .NET 8 migration, and CI/CD delivery. Leverages GitHub Copilot, ChatGPT, Claude, and Microsoft Copilot through structured prompt engineering — achieving up to 45–50% reduction in defect resolution time while maintaining enterprise compliance standards.

Overview

3

years of professional experience

1

Certification

Work History

.NET Developer

CGI

Bangalore

09.2022 - Current

Designed and developed RESTful APIs for Ratabase legacy web applications, fixing numerous defects and production issues while enhancing functionality through new feature implementation; Ratabase is CGI’s flagship insurance rating and underwriting (Rate & Rule Management) platform with over 38 years of industry legacy, trusted by leading global P&C insurance carriers.
Designed and implemented an enterprise‑grade Swagger API Change Comparison Tool embedded within Swagger UI — automated diff analysis across 450+ APIs using ASP.NET Core and OASDiff CLI, with breaking‑change detection, HTML report generation, caching, and IIS deployment. Eliminated 1–2 sprints of manual release validation effort.
Implemented end‑to‑end Swagger documentation across 450+ APIs using Swashbuckle, AutoMapper, and C# annotations — improving API governance, discoverability, and developer onboarding.
Developed and maintained RESTful APIs for Ratabase, CGI’s flagship global P&C insurance rating and underwriting platform with 38+ years of industry legacy.
Reduced defect resolution time by 45–50% through AI‑assisted debugging and structured prompt engineering workflows.
Led migration from .NET 6 to .NET 8 and contributed to multiple major service pack releases across Ratabase Product Builder WebUI and RB360 Web Application.
Currently contributing to Pragma MWM (Mobile Workforce Management) in the Utilities domain — developing RESTful APIs as part of a legacy Windows product modernization, migrating to a scalable API‑first architecture supporting web and mobile platforms across power generation and field operations.
Maintained xUnit test suites and supported Jenkins CI/CD pipelines with SonarQube static analysis; facilitated Scrum ceremonies and mentored junior engineers in SAFe Agile environments.

Training .NET Full Stack Developer

CGI

09.2022 - 11.2022

Developed front-end and back-end components using ASP.NET, Angular, HTML, CSS, Bootstrap, and TypeScript.
Implemented UI components and user services using JavaScript, improving application functionality and user interaction.
Enhanced functionality of user services through UI design and JavaScript implementation.
Managed application data using SQL/DBMS, gaining hands-on experience in database management.
Collaborated with team members using Git and GitLab for version control and task management.
Integrated front-end, back-end, and database components in Weather Forecast Application final project.

Education

B.Tech -

NIT Jalandhar

Punjab, India

01-2022

Skills

C# and ASPNET Core (NET 6 / NET 8)
RESTful API Development
Entity Framework Core
Microservices Architecture
SQL & SQL Server Management Studio (SSMS)
Stored Procedures
Swagger / Swashbuckle
AutoMapper & OASDiff
API Governance & Documentation
Postman API Testing

xUnit Testing
CI/CD Pipelines
IIS Deployment
Git / GitLab
Visual Studio IDE & VS Code
Jira Project Management
Agile / Scrum (SAFe Methodologies)
AI‑Assisted Debugging & Development
Expertise with LLMs: Claude, Gemini, ChatGPT, GitHub Copilot, Copilot