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I am a Senior Software Engineer with 10 years of experience designing, building, and delivering high-performance web applications. I specialize in crafting responsive, user-centric solutions using React, Vue.js, ASP.NET Core, and cloud services, balancing aesthetics with robust engineering. I enjoy collaborating with product and design teams to translate concepts into scalable platforms, optimize performance and accessibility, and mentor peers. Based in Warsaw, I lead frontend/backend efforts at Letsia AI, delivering multilingual marketing sites on AWS with Docker and CI/CD pipelines.…I am a Senior Software Engineer with 10 years of experience designing, building, and delivering high-performance web applications. I specialize in crafting responsive, user-centric solutions using React, Vue.js, ASP.NET Core, and cloud services, balancing aesthetics with robust engineering. I enjoy collaborating with product and design teams to translate concepts into scalable platforms, optimize performance and accessibility, and mentor peers. Based in Warsaw, I lead frontend/backend efforts at Letsia AI, delivering multilingual marketing sites on AWS with Docker and CI/CD pipelines.

Naveen Kumar

Web Developer, Front-End Developer, Back-End Developer, +2

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I am a Senior Software Engineer with 10 years of experience designing, building, and delivering high-performance web applications. I specialize in crafting responsive, user-centric solutions using React, Vue.js, ASP.NET Core, and cloud services, balancing aesthetics with robust engineering. I enjoy collaborating with product and design teams to translate concepts into scalable platforms, optimize performance and accessibility, and mentor peers. Based in Warsaw, I lead frontend/backend efforts at Letsia AI, delivering multilingual marketing sites on AWS with Docker and CI/CD pipelines.…I am a Senior Software Engineer with 10 years of experience designing, building, and delivering high-performance web applications. I specialize in crafting responsive, user-centric solutions using React, Vue.js, ASP.NET Core, and cloud services, balancing aesthetics with robust engineering. I enjoy collaborating with product and design teams to translate concepts into scalable platforms, optimize performance and accessibility, and mentor peers. Based in Warsaw, I lead frontend/backend efforts at Letsia AI, delivering multilingual marketing sites on AWS with Docker and CI/CD pipelines.

Available to hire

I am a Senior Software Engineer with 10 years of experience designing, building, and delivering high-performance web applications. I specialize in crafting responsive, user-centric solutions using React, Vue.js, ASP.NET Core, and cloud services, balancing aesthetics with robust engineering.

I enjoy collaborating with product and design teams to translate concepts into scalable platforms, optimize performance and accessibility, and mentor peers. Based in Warsaw, I lead frontend/backend efforts at Letsia AI, delivering multilingual marketing sites on AWS with Docker and CI/CD pipelines.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Senior Software Engineer at Letsia AI

February 1, 2024 - November 7, 2025

Led the Letsia AI Website Revamp Project, designing and developing a responsive, high-performance marketing site using React, Tailwind CSS, and Node.js to showcase AI-driven solutions and case studies. Collaborated with UI/UX designers to implement sleek, interactive layouts that improved user engagement by 40% through dynamic transitions and optimized media delivery. Integrated SEO-friendly structures and performance tuning techniques, achieving a 98% Lighthouse performance score across devices. Implemented scalable content sections managed through a headless CMS, ensuring easy content updates and multilingual support. Deployed the platform on AWS using Docker containers and CI/CD pipelines, ensuring zero downtime and consistent builds across environments.

Software Engineer at Microsoft Singapore (Asia Pacific HQ)

January 1, 2024 - January 1, 2024

Developed and maintained the Microsoft APAC Partner Portal Project, a responsive web platform enabling partner engagement and content management using ASP.NET Core, Vue.js, and Azure services. Engineered reusable UI components adhering to corporate branding guidelines, reducing front-end development time by 25%. Optimized SQL and REST API integrations for faster content retrieval and seamless cross-browser experiences. Collaborated with global design teams to align UX/UI prototypes with accessibility standards and performance KPIs. Implemented automated build pipelines and deployment scripts through Azure DevOps for reliable production rollouts.

Software Developer at Sony Electronics (Singapore) Pte. Ltd.

March 1, 2019 - March 1, 2019

Contributed to the Sony E-Showcase Web Project, developing a modular, responsive product presentation website integrating video streaming and dynamic galleries using JavaScript, jQuery, and PHP. Optimized media rendering and caching strategies to improve page load time by 35% and mobile responsiveness across devices. Collaborated with creative teams to translate visual mockups into fully functional interfaces aligned with brand identity. Integrated content management capabilities using WordPress APIs, enabling non-technical staff to update digital content seamlessly. Ensured site reliability and cross-browser compatibility through comprehensive testing and quality assurance processes.