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Irvin Cossio Chavalier

@irvincossiochavalier

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Full-Stack Software Engineer at ReelLove building video workflows and scalable media storage.

Bolivia

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At ReelLove, I built an Admin Dashboard in Next.js with FFmpeg integration to support eight video processing workflows, and connected S3 and Supabase for media storage. I also optimized Supabase queries, reducing query response times by 50%.

At Plata Fintech, I developed Next.js dashboard features and integrated Wallet and WhatsApp Native into a React Native app. Earlier, I built mobile and web products at Zubale, Jalasoft, and Witco, including delivery flows, employee tools, and hardware integrations; I also mentored engineers at Jalasoft and Witco.

Experience

Work history, roles, and key accomplishments

Current

Full-Stack Software Engineer

Current

ReelLove

Aug 2026 - Present (2 months)

Built an Admin Dashboard in Next.js with FFmpeg integration for video processing, metadata extraction, and multi-quality video generation. Integrated S3 and PostgreSQL via Supabase for scalable media storage and optimized queries for 50% faster response times.

Next.js FFMPEG S3 PostgreSQL Supabase Vercel GCP Claude Code Spec Driven Development

Current

Organizer

Current

Google Developer Group

Jul 2022 - Present (4 years 3 months)

Organized community tech events to build local developer engagement in Cochabamba. Delivered workshops on Android development and TypeScript to the local tech community.

Android TypeScript Community Engagement Event Organization

Mobile / FullStack Senior Software Engineer

Plata Fintech

Sep 2025 - Jun 2026 (9 months)

Developed web features in Next.js using React Query, Redux DevTools, Zod, Tailwind, and Stripe. Implemented Wallet and WhatsApp Native integrations into a React Native fintech app serving more than 200 users and reduced ticket-to-PR time by ~30% with AI coding tools.

Next.js React Query Redux DevTools Zod Tailwind Stripe React Native Linear AWS Claude Code Antigravity

Mobile / Web Software Engineer

Zubale

Oct 2024 - Aug 2025 (10 months)

Built React and Next.js web control applications for delivery management and task assignment, serving 115 client stores and 300+ drivers across 7 countries. Maintained delivery platform stability and owned end-to-end deployment for App Store and Play Store.

React Next.js React Native Jira app store Play Store Deep Linking Third Party APIs

Mobile Software Engineer

Jalasoft

Sep 2022 - Jan 2025 (2 years 4 months)

Built a cross-platform onboarding system with exam and video class modules via WebViews, used by 100+ employees. Delivered an employee time-tracking system adopted by 500+ users and engineered a crypto wallet module with QR-based flows using Flutter.

React Native Android iOS Kotlin Jetpack Compose Flutter WebView

Mobile Software Engineer

Witco

Aug 2017 - Sep 2022 (5 years 1 month)

Delivered React Native mobile solutions for 20+ enterprise clients by building native hardware module integrations. Automated white-labeled builds with bash scripts, cutting setup time by 50%, and maintained CI/CD pipelines for App Store and Play Store uploads.

React Native iOS Android GraphQL Apollo Client BASH CI CD Microsoft Appcenter Localization

Full-Stack Software Engineer

Freelance

Jan 2017 - Aug 2017 (7 months)

Worked with a team of 3 engineers to develop landing pages, an admin panel, and a Pharmacy System to handle inventory. Built backend features using Ruby on Rails and Angular, and scraped web pages using Python.

Ruby on Rails Angular Firebase Python Jira