Hello! I’m a full-stack .NET developer with over 12+ years of experience delivering enterprise-grade solutions for clients across the globe. I help businesses modernize legacy systems, automate manual processes, and build scalable cloud apps — efficiently and securely.

Sugumaran Thambusamy Kannan

Hello! I’m a full-stack .NET developer with over 12+ years of experience delivering enterprise-grade solutions for clients across the globe. I help businesses modernize legacy systems, automate manual processes, and build scalable cloud apps — efficiently and securely.

Available to hire

Hello! I’m a full-stack .NET developer with over 12+ years of experience delivering enterprise-grade solutions for clients across the globe. I help businesses modernize legacy systems, automate manual processes, and build scalable cloud apps — efficiently and securely.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Advanced

Work Experience

Lead Software Engineer at RR Donnelley Pvt Ltd
December 1, 2021 - Present
Leading full-stack development and Angular migration for a large-scale procurement system used by U.S. clients. Migrated a legacy web application from .NET Framework 4.7 to .NET 6.0 for enhanced performance and maintainability. Upgraded Angular from v8 to v18 and ensured secure deployment through CI/CD. Mentoring a team of developers and driving Agile sprints for feature development, bug fixes, and code reviews.
Technology Analyst at Infosys Ltd
December 31, 2021 - July 24, 2025
Contributed to a core banking project for one of the leading banks in the U.S., focusing on secure system integration. Migrated a legacy web application from .NET Framework 2.0 to .NET Framework 4.5 to improve maintainability, performance, and compatibility with modern libraries. Built secure APIs integrated with SMS/email notification engines.
Senior Software Developer at SunSmart Technologies
March 31, 2017 - July 24, 2025
Developed modules in HRMS, Supplier and Tender Management for Indian and Middle Eastern clients. Provided onsite support and client training in Bahrain and UAE. Integrated AD authentication and built secure backend APIs using WCF.
.NET Developer (Freelance) at MEQ Carcass Grading Tool
January 1, 2023 - Present
Developed secure REST APIs with JWT authentication for carcass grading workflows. Imported lakhs of records from Excel using dynamic metadata logic and applied custom mapping logic for cut/cook types and MEQ scoring. Optimized performance using InsertManyAsync and parallel processing. Implemented CI/CD pipeline using GitHub Actions and deployed on Azure.
.NET Developer at Freelance
January 1, 2023 - Present
Developed secure REST APIs with JWT authentication for carcass grading workflows; imported lakhs of records from Excel using dynamic metadata logic; applied custom mapping logic for cut/cook types and MEQ scoring; optimized performance using InsertManyAsync and parallel processing; implemented CI/CD pipeline using GitHub Actions and deployed on Azure.
Lead Software Engineer at RR Donnelley Pvt Ltd
December 1, 2021 - Present
Leading full-stack development and Angular migration for a large-scale procurement system used by U.S. clients. Migrated a legacy web application from .NET Framework 4.7 to .NET 6.0 for enhanced performance and maintainability. Upgraded Angular from v8 to v18 and ensured secure deployment through CI/CD. Mentoring a team of developers and driving Agile sprints for feature development, bug fixes, and code reviews.
Technology Analyst at Infosys Ltd, Chennai
December 1, 2021 - September 18, 2025
Contributed to a core banking project for one of the leading banks in the U.S., focusing on secure system integration. Migrated a legacy web application from .NET Framework 2.0 to .NET Framework 4.5 to improve maintainability, performance, and compatibility with modern libraries. Built secure APIs integrated with SMS/email notification engines.
Senior Software Developer at SunSmart Technologies, Chennai
March 1, 2017 - September 18, 2025
Developed modules in HRMS, Supplier and Tender Management for Indian and Middle Eastern clients. Provided onsite support and client training in Bahrain and UAE. Integrated AD authentication and built secure backend APIs using WCF.
Lead Software Engineer at RR Donnelley Pvt Ltd
December 1, 2021 - Present
Leading full-stack development and Angular migration for a large-scale procurement system used by U.S. clients. Migrated a legacy web application from .NET Framework 4.7 to .NET 6.0 for enhanced performance and maintainability. Upgraded Angular from v8 to v18 and ensured secure deployment through CI/CD. Mentoring a team of developers and driving Agile sprints for feature development, bug fixes, and code reviews.
Technology Analyst at Infosys Ltd
December 1, 2021 - September 18, 2025
Contributed to a core banking project for one of the leading banks in the U.S., focusing on secure system integration. Migrated a legacy web application from .NET Framework 2.0 to .NET Framework 4.5 to improve maintainability, performance, and compatibility with modern libraries. Built secure APIs integrated with SMS/email notification engines.
Senior Software Developer at SunSmart Technologies
March 1, 2017 - September 18, 2025
Developed modules in HRMS, Supplier and Tender Management for Indian and Middle Eastern clients. Provided onsite support and client training in Bahrain and UAE. Integrated AD authentication and built secure backend APIs using WCF.
Freelance .NET Developer at Self-employed
January 1, 2023 - November 26, 2025
Developed secure REST APIs with JWT authentication for carcass grading workflows. Implemented custom mapping logic for cut/cook types and MEQ scoring, optimizing performance using InsertManyAsync and parallel processing.

Education

B.E. at Vel Tech High Tech Engineering College, Anna University
January 1, 2009 - December 31, 2013
Higher Secondary (XII) at St. Paul’s Matric Hr. Sec. School, Chennai
January 1, 2007 - December 31, 2008
SSLC (X) at St. Paul’s Matric Hr. Sec. School, Chennai
January 1, 2005 - December 31, 2006
B.E. in Computer Science & Engineering at Vel Tech High Tech Engineering College, Anna University
January 1, 2009 - January 1, 2013
Higher Secondary at St. Paul’s Matric Hr. Sec. School, Chennai
January 11, 2030 - September 18, 2025
SSLC at St. Paul’s Matric Hr. Sec. School, Chennai
January 11, 2030 - September 18, 2025
B.E. – Computer Science & Engineering at Vel Tech High Tech Engineering College, Anna University
January 1, 2009 - January 1, 2013
Higher Secondary (XII) at St. Paul’s Matric Hr. Sec. School, Chennai
January 11, 2030 - September 18, 2025
SSLC (X) at St. Paul’s Matric Hr. Sec. School, Chennai
January 11, 2030 - September 18, 2025

Qualifications

Add your qualifications or awards here.

Industry Experience

Financial Services, Government, Software & Internet, Professional Services, Computers & Electronics