Hello, I am Ramkumar Kollimalayan, a Senior Full Stack Developer with 8+ years of experience delivering enterprise SaaS applications for global maritime and e-commerce industries. I have led modernization efforts, integrated third-party APIs, and built secure, scalable solutions using Angular, ASP.NET Core, and SQL Server across multi-tenant architectures. I thrive on performance optimization, reducing manual workflows, and delivering features with a strong on-time delivery track record. I am a collaborative team player who excels in Agile environments, leading design discussions, code reviews, and cross-functional collaboration to translate requirements into robust, production-ready systems. I enjoy driving from requirements to production deployment and mentoring peers to adopt SOLID principles and modern frameworks.

Ramkumar Kollimalayan

5.0 (2 reviews)

Hello, I am Ramkumar Kollimalayan, a Senior Full Stack Developer with 8+ years of experience delivering enterprise SaaS applications for global maritime and e-commerce industries. I have led modernization efforts, integrated third-party APIs, and built secure, scalable solutions using Angular, ASP.NET Core, and SQL Server across multi-tenant architectures. I thrive on performance optimization, reducing manual workflows, and delivering features with a strong on-time delivery track record. I am a collaborative team player who excels in Agile environments, leading design discussions, code reviews, and cross-functional collaboration to translate requirements into robust, production-ready systems. I enjoy driving from requirements to production deployment and mentoring peers to adopt SOLID principles and modern frameworks.

Available to hire

Hello, I am Ramkumar Kollimalayan, a Senior Full Stack Developer with 8+ years of experience delivering enterprise SaaS applications for global maritime and e-commerce industries. I have led modernization efforts, integrated third-party APIs, and built secure, scalable solutions using Angular, ASP.NET Core, and SQL Server across multi-tenant architectures. I thrive on performance optimization, reducing manual workflows, and delivering features with a strong on-time delivery track record.

I am a collaborative team player who excels in Agile environments, leading design discussions, code reviews, and cross-functional collaboration to translate requirements into robust, production-ready systems. I enjoy driving from requirements to production deployment and mentoring peers to adopt SOLID principles and modern frameworks.

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Experience Level

Expert
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Expert
Intermediate
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Language

Tamil
Fluent
English
Advanced

Work Experience

Software Engineer L3 at ProdEngines Private Limited (a SpeeHive subsidiary)
November 14, 2022 - Present
Architected and maintained an enterprise bunker fuel procurement platform used by 200+ users across 78 global ports, overseeing modules for procurement, operations, claims, and invoicing. Led Angular modernization from v10 to v18 and migrated authentication from IdentityServer4 to OAuth 2.0/OIDC with OpenIddict, implementing RBAC and JWT-based access control. Integrated third-party maritime data APIs (MarineTraffic, Lloyds List Intelligence) for real-time vessel tracking and pricing data. Built RESTful APIs with ASP.NET Core 8 and EF Core (with OData support) enabling secure, scalable data exchange between Angular frontend and backend. Implemented Azure AD SSO multi-tenant architecture, optimized SQL Server queries, automated workflows with SignalR real-time notifications, reducing manual efforts by 40%. Collaborated in Agile ceremonies, ensuring 2-week sprints and on-time delivery.
Full Stack Developer at Collective Dallas
May 10, 2019 - November 10, 2022
Developed frontend components for multiple e-commerce and corporate web applications using HTML5, CSS3, JavaScript, jQuery, and Bootstrap; converted PSD/Figma designs into responsive, pixel-perfect interfaces with 95% design fidelity. Built and customized WordPress and PHP-based applications using CodeIgniter, implementing custom themes, plugins, and database integrations. Collaborated with UI/UX designers and backend teams to deliver features in 2-week sprints, ensuring on-time delivery of high-quality frontend features.
Senior UX/UI Developer at Techleaf Solutions Private Limited
June 1, 2015 - April 30, 2019
Developed and maintained 20+ responsive websites using WordPress, WooCommerce, PHP, HTML5, CSS3, and JavaScript for small and medium-sized clients. Customized WordPress themes, implemented PHP-based enhancements, and integrated payment gateways. Improved frontend performance through optimized delivery, lazy loading, and cross-browser compatibility, delivering 25% faster page loads.
UI/UX Designer at Southern Soft Solutions
October 1, 2014 - May 29, 2015
Designed and developed responsive web pages and email newsletters using HTML5, CSS3, and jQuery. Gained hands-on exposure to frontend best practices, usability principles, and cross-browser compatibility testing across major browsers.
Operations Associate at Solartis Inc.
September 9, 2013 - September 30, 2014
Supported US insurance client operations by processing data, validating system outputs, and ensuring accuracy in reports within defined SLAs. Worked with internal tools to deliver error-free outputs with high accuracy.

Education

Master of Computer Applications at Anna University, Chennai
June 1, 2010 - June 30, 2013
Bachelor of Computer Science at PKN Arts and Science College, Madurai, Tamil Nadu, India
June 4, 2007 - June 11, 2010

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services

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