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Senior Frontend Developer with 8+ years of experience building scalable, high-performance web applications using React.js and Next.js. Expert in TypeScript, Redux Toolkit, React Query, SSR, SSG, and modern frontend architectures. Proven track record delivering SaaS platforms, dashboards, real-time systems, and eCommerce solutions with strong focus on performance, SEO, and maintainability. Experienced working with crossfunctional teams, CI/CD pipelines, and cloud deployments using Vercel and AWS.…Senior Frontend Developer with 8+ years of experience building scalable, high-performance web applications using React.js and Next.js. Expert in TypeScript, Redux Toolkit, React Query, SSR, SSG, and modern frontend architectures. Proven track record delivering SaaS platforms, dashboards, real-time systems, and eCommerce solutions with strong focus on performance, SEO, and maintainability. Experienced working with crossfunctional teams, CI/CD pipelines, and cloud deployments using Vercel and AWS.

Francen Timothy N. Castro

Full Stack Developer, Web Developer, Front-End Developer, +4

5.0 (1 review)

Senior Frontend Developer with 8+ years of experience building scalable, high-performance web applications using React.js and Next.js. Expert in TypeScript, Redux Toolkit, React Query, SSR, SSG, and modern frontend architectures. Proven track record delivering SaaS platforms, dashboards, real-time systems, and eCommerce solutions with strong focus on performance, SEO, and maintainability. Experienced working with crossfunctional teams, CI/CD pipelines, and cloud deployments using Vercel and AWS.…Senior Frontend Developer with 8+ years of experience building scalable, high-performance web applications using React.js and Next.js. Expert in TypeScript, Redux Toolkit, React Query, SSR, SSG, and modern frontend architectures. Proven track record delivering SaaS platforms, dashboards, real-time systems, and eCommerce solutions with strong focus on performance, SEO, and maintainability. Experienced working with crossfunctional teams, CI/CD pipelines, and cloud deployments using Vercel and AWS.

Available to hire

Senior Frontend Developer with 8+ years of experience building scalable, high-performance web applications
using React.js and Next.js. Expert in TypeScript, Redux Toolkit, React Query, SSR, SSG, and modern frontend
architectures. Proven track record delivering SaaS platforms, dashboards, real-time systems, and eCommerce
solutions with strong focus on performance, SEO, and maintainability. Experienced working with crossfunctional teams, CI/CD pipelines, and cloud deployments using Vercel and AWS.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Software Developer at NextGen Systems Corporation

April 7, 2026 - November 14, 2025

Software Developer at NextGen Systems Corporation

September 1, 2022 - November 30, 2025

Developed scalable React and Next.js applications using SSR and SSG, improving SEO and reducing page load times by 50%. Delivered pixel-perfect, responsive UIs from Figma designs, increasing cross-device usability and visual consistency by 40%. Architected modular component systems and Redux Toolkit state management, reducing code duplication by 30%. Integrated 10+ RESTful APIs for real-time dashboards, analytics, and transaction data, accelerating data delivery by 45%. Implemented performance optimizations including lazy loading, memoization, and code splitting, increasing user retention by 18%. Collaborated with product managers, designers, and backend teams to support 5,000+ active users.

Software Developer at Directio

September 18, 2018 - March 23, 2022

Software Developer at Horizon Data Systems

January 20, 2016 - December 23, 2017