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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.…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

Full Stack Developer, Front-End Developer, Web Developer

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.…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.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Beginner

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.