Summary
Overview
Work History
Education
Skills
Websites
Languages
Timeline
Generic

RAJAKUMAR PERIYASAMY

Wheeling,IL

Summary

Dynamic Full-Stack .NET Developer and Technical Lead with over 15 years of comprehensive experience in software development, testing, and delivery utilizing Microsoft .NET technologies. Expertise in designing, developing, and deploying robust enterprise applications, with a strong command of ASP.NET MVC, .NET Core, Angular, Azure, and SQL Server. Proven leader adept at guiding cross-functional teams, managing resources efficiently, and driving successful end-to-end project execution. Demonstrated ability to deliver scalable, high-quality solutions across diverse sectors including finance, healthcare, retail, and communications.

Overview

15
15
years of professional experience

Work History

Technical Lead

Cognizant Technology Solutions US Corp
07.2018 - Current
  • Led development teams delivering enterprise-grade applications for global clients, ensuring scalable, secure, and high-performance solutions using the Microsoft .NET ecosystem.
  • Directed a cross-functional team of 8–12 developers, driving project delivery with 100% on-time completion while maintaining technical excellence aligned with business goals.
  • Led client engagement activities, including business analysis, requirement gathering, and solution design, aligning technology solutions with customer needs and increasing client satisfaction by 20%.
  • Designed and developed enterprise applications using C#, ASP.NET Core MVC, Web API, and Angular 8, boosting business productivity and reducing process bottlenecks by 25%.
  • Implemented authentication/authorization frameworks, exception handling, and coding standards, enhancing application security and maintainability.
  • Mentored team members, conducted code reviews, and established best practices, improving overall team efficiency by 20%.
  • Delivered detailed weekly reporting and ensured projects were completed on time and within scope, strengthening stakeholder confidence.

Application Development Senior Analyst

Accenture Solutions
04.2015 - 07.2018
  • Contributed to the design, development, and deployment of enterprise applications for clients across healthcare, finance, and other industries, supporting millions of monthly transactions.
  • Built scalable multi-tier applications using C#, ASP.NET MVC/Core, and SQL Server, streamlining business workflows and improving process efficiency by 25–30%.
  • Developed and optimized stored procedures, triggers, and queries, reducing data processing time by 30%.
  • Led UI development with ASP.NET, JavaScript, and modern frontend frameworks, delivering intuitive, responsive, and user-friendly interfaces.
  • Collaborated with vendors and integrated external applications, ensuring seamless interoperability across systems.
  • Diagnosed and resolved critical application issues, improving system reliability and reducing downtime by 20%.
  • Managed deployments and production rollouts, ensuring smooth transitions from testing to production environments.

Software Engineer

Adela Software and Services
04.2010 - 04.2015
  • Developed and maintained tax and enterprise software solutions for U.S. clients, ensuring 100% compliance and high usability across financial and tax preparation workflows.
  • Designed and implemented applications using C#, ASP.NET, and SQL Server, serving over 10,000 active users and supporting complex financial transactions.
  • Participated in requirement analysis, database design, and implementation, delivering robust architecture that reduced system errors by 25%.
  • Built and enhanced user interfaces with Web Forms and JavaScript, improving end-user efficiency and reducing task completion time by 30%.
  • Resolved production issues and delivered critical fixes under tight timelines, maintaining 99.9% system uptime.
  • Collaborated with product owners to gather requirements and conduct demos, resulting in a 20% increase in client satisfaction scores.
  • Played a key role in multiple live portal enhancements, ensuring system stability, scalability, and support for high-volume transactions.

Education

B.Tech - Information Technology

Bharathidasan University
India
05-2009

Skills

  • Languages & Frameworks: C#, ASPNET, ASPNET MVC, NET Core, ADONET, WCF, Web API, RESTful Services
  • Front-End: Angular, JavaScript, TypeScript, HTML5, CSS3, jQuery, Bootstrap, AJAX
  • Cloud & DevOps: Microsoft Azure (PaaS, Web Apps, Cloud Services), Azure DevOps, CI/CD Pipelines, Git, TFS, SVN, Jenkins, Bitbucket, UCD7
  • Databases: SQL Server 2022, Stored Procedures, Views, Triggers, Joins, Performance Tuning
  • Architecture & Design: OOD, SOA, MVC, Microservices, API Integration
  • Project Leadership: Agile (Scrum), Waterfall, Client Interaction, Mentorship & Team Management

Websites

Languages

English
Full Professional
Tamil
Native or Bilingual

Timeline

Technical Lead

Cognizant Technology Solutions US Corp
07.2018 - Current

Application Development Senior Analyst

Accenture Solutions
04.2015 - 07.2018

Software Engineer

Adela Software and Services
04.2010 - 04.2015

B.Tech - Information Technology

Bharathidasan University

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