Thiyagarajan Mani Chettier is a seasoned Technical Lead with over 19 years of experience in application design, development, and modernization across the insurance, education, and federal enterprise domains. Holding a Master’s Degree in Computer Applications from the University of Madras, he specializes in modernizing legacy applications, architecting cloud-based scalable solutions, developing deployment pipelines, and optimizing application performance.
Thiyagarajan has extensive expertise in cutting-edge technologies, including .NET Core, Entity Framework Core, ML.NET, REST API, React JS, Blazor, JavaScript, Bootstrap, SQL Server, OIDC, and Microservices. His proficiency extends to cloud platforms such as AWS, Microsoft Azure, and Pivotal Cloud Foundry, along with DevOps tools like Jenkins and Azure Gen-AI. As a strategic thinker and mentor, he plays a key role in decision-making, driving business growth, and mentoring junior developers.
Professional Experience
ICF | .NET Lead | Present
At ICF, Thiyagarajan leads a team of 10 developers, spearheading application modernization efforts for Forest Health Protection (FHP). His key contributions include:
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Developing a custom ML.NET REST API to analyze plant disease images, improving accuracy and performance by 80%.
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Enhancing data transfer efficiency through Azure-based automated scheduling, reducing manual efforts by 60%.
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Optimizing SQL queries and UI performance for the FHAAST Pest Event Reporter application, reducing search page load time from 3 minutes to just 2 seconds.
LTI Mindtree | Senior Project Manager |
During his tenure at LTI Mindtree, Thiyagarajan led a team of 15 developers on IT security projects for Travelers Insurance, with a strong focus on cloud migration, application security, and performance optimization. Key achievements include:
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Migrating legacy applications to a cloud-native environment, reducing licensing costs by 50% and improving application performance by 20%.
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Developing the TEMARS IT Security Audit application, deployed on 10,000+ servers, achieving 90% audit accuracy.
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Successfully modernizing the SERTS legacy application using Twelve-Factor App principles, improving system performance by 30% and reducing operational costs significantly.
NatureSoft Pvt Ltd | Associate Technical Associate |
Thiyagarajan contributed to software development and maintenance projects, gaining hands-on experience in enterprise application development.
Technical Expertise
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Cloud Technologies: Microsoft Azure, AWS (Lambda, S3, EC2), Pivotal Cloud Foundry
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Programming & Frameworks: .NET Core, React JS, Blazor, ML.NET, Bootstrap, JavaScript
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DevOps & CI/CD: Jenkins, Azure DevOps, UCD, RabbitMQ
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Data & Security: SQL Server, Active Directory, OIDC, SSIS, SSRS
Leadership & Volunteering
Thiyagarajan actively contributes to the technology community through leadership and mentoring roles:
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Coordinator, Youth Toastmasters Club, Manchester, CT
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Ex-Treasurer, Nathan Hale Toastmasters Club, Manchester, CT
Certifications
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TOGAF Certified Enterprise Architect
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Microsoft Certified: Azure Fundamentals, Azure Administrator, AI Fundamentals, .NET, SQL Server
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Dynamic Leadership, Level 4 – Toastmasters International
Industry Recognition & Awards
Thiyagarajan’s expertise and leadership have been recognized through prestigious industry awards:
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Globee Awards: Global Recognition Award (2025), Industry Judge for Cybersecurity Awards
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Boston University: Industry Expert & Judge at the 2025 Civic Hacks Hackathon
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IEEE: Active Reviewer for international conferences and Judge for VEX V5 State Championships
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Business Intelligence Awards: Judge for AI Excellence Awards
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Brandon Hall Awards: Industry Expert Panel Member
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ICF Awards: Bronze Award (2025), Copper Award for Excellence in Agile Development
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LTI Awards: Individual Contribution Award, Team Award, and Spot Award for project excellence
Publications & Research
Thiyagarajan actively contributes to industry knowledge through research and authorship:
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Book Chapter: AI-Powered Fraud Detection and Cybersecurity in Banking
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Published Articles: Topics on full-stack development, scalable architecture, ML.NET, and cloud security
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Scopus-Indexed Research Journals
With nearly two decades of experience in software development, cloud computing, and application modernization, Thiyagarajan Mani Chettier stands out as a visionary technical leader. His ability to optimize performance, enhance security, and drive innovation makes him a valuable asset in any enterprise IT environment. Through mentorship, research, and leadership, he continues to shape the future of technology and digital transformation.