Senior Frontend Developer
Facundo Perez Montalvo
By Facundo Perez Montalvo · Last updated March 2026
Senior Frontend Developer with a product-minded approach to React, Next.js, and TypeScript. I build polished interfaces, translate design systems into production code, and collaborate across product, QA, and backend to ship reliable user experiences.
Experience
Svitla Systems Inc.
Working remotely
Senior Frontend Developer
January 2025 — Present
- Owned end-to-end delivery of complex features including an AI-powered story creation pipeline — designed the full architecture (Zustand state machine, dual user flows, feature flags), wrote technical documentation before implementation, and shipped ahead of deadline.
- Drove a platform-wide Next.js migration, resolving critical architectural constraints. Translated Figma designs into accessible, production-ready React components with strong attention to design system consistency and performance.
- Established team-wide coding standards and drove a large-scale legacy code reduction. Grew into cross-team leadership — conducting code reviews, guiding architecture, and partnering with backend and QA on delivery quality.
Middle Frontend Developer
August 2024 — January 2025
- Led the migration of a legacy course platform to a modern React stack, ensuring seamless transition of content, functionality, and user experience.
- Collaborated with QA to maintain high standards of design accuracy, functionality, and audio quality throughout the migration.
- Built and enhanced internal developer tools, streamlining workflows and improving team productivity.
SupportYourApp
Working remotely
Technical Support Consultant & Frontend Developer
August 2023 — August 2024
- Resolved complex technical issues for software products, achieving a 95% customer satisfaction score across email and phone support.
- Applied HTML, CSS, and JavaScript expertise to debug customer-facing frontend and backend issues, reducing resolution times.
- Identified recurring user pain points and communicated findings to product teams, contributing to improved product usability.
Freelance Activity
Argentina
Frontend React Developer
March 2022 — Present
- Built responsive web applications for local businesses across hospitality, services, and real estate, from requirements through deployment.
- Delivered production-ready interfaces using React, Next.js, TypeScript, and Tailwind CSS, prioritizing performance and accessibility.
Core Stack
Frontend
React · Next.js · TypeScript · Tailwind CSS · Astro · shadcn/ui
Product
Design implementation · Accessibility · Performance · SEO
Data and forms
TanStack Query · Zustand · Zod · React Hook Form · Prisma · Drizzle ORM
Testing
Playwright · Vitest · React Testing Library · Storybook
Education and Languages
- Bachelor's in Business Administration and Management, Universidad Siglo 21 (2017 - 2020)
- English: fluent · Spanish: native