Carlos Arancibia

Senior Product Engineer

Naples, FL•carloseav15@gmail.com•carlos-arancibia.com•linkedin.com/in/carancibiav•github.com/carloseav15

Professional Summary

Pragmatic Senior Product Engineer with 8+ years of experience designing, shipping, and maintaining production-grade web and mobile applications across the U.S. and Latin America. Evolved from data center infrastructure operations to mobile development and full-stack engineering, building a strong foundation in transactional payment systems, real-time dashboards, and end-to-end product delivery. Proven record of translating complex business processes into clean, scalable software. Currently based in the U.S. (EAD holder, no sponsorship required) and seeking a product engineering role to contribute to high-impact teams.

Technical Skills

Languages:Kotlin, Java, Objective-C, JavaScript, TypeScript, Dart, SQL, PHP

Frontend & Mobile:Android (Kotlin/Java), iOS (Objective-C), Flutter, React / Next.js 15/16, Tailwind CSS v4, HTML, CSS, WordPress

Backend & APIs:REST APIs, Node.js, Firebase (Auth, Firestore), Supabase (Postgres, Edge Functions), SQL Server, MySQL

Mobile Distribution:Google Play Console, App Store Connect

Tools & Quality:Git, CI/CD (GitHub Actions), Biome, Vitest, Playwright, Agile

Work Experience

Senior Product Engineer | Playfit

Latest Project•Remote

Architected a Next.js 16 (App Router) and React 19 monorepo application separating apps/web and @playfit/core.
Open-sourced the codebase (github.com/carloseav15/playfit) and structured the roadmap for native Android, iOS, and Flutter variants.
Engineered a real-time recommendation scoring engine for user game affinity and friction risk.
Implemented Supabase Row-Level Security (RLS) and PL/pgSQL database-level functions, eliminating exposed keys.

Product Engineer (Side Project) | MatchdayOS

Oct 2025 - Present•Remote

Designed and built an end-to-end soccer operations platform with 70 route-level pages (active in development).
Implemented strict role boundaries across 5 user access modes: org-admin, team-admin, referee, representative, and player.
Engineered state-driven workflows for live matchday events (roster verification, timeline, scoreboard) and post-match reporting.
Integrated UX telemetry logging client actions into Supabase database analytics.

Senior Product Engineer | Diaz Brothers Company LLC

Jul 2024 - Sep 2025•Bonita Springs & Naples, FL

Designed and built a real-time operational dashboard for logistical transparency and technician/vehicle dispatch tracking.
Created an internal service order logistics system with custom pricing logic, PDF invoice generation, and automated workflows.
Eliminated manual phone coordination between field teams and administration by establishing real-time scheduling tracking.
Redesigned the company website to improve engagement and showcase services.

Mobile & E-Commerce Systems Engineer | DIGICORP LTDA

Dec 2019 - Jun 2024•Bolivia / Peru / Chile

Main programmer for public Android & iOS applications (DigiApp), achieving 10,000+ public downloads and maintaining stability for 4+ years.
Designed and built the B2B e-commerce web platform from scratch in Vanilla JavaScript, HTML, CSS, and SQL Server.
Built backend REST APIs from scratch in PHP; engineered reverse-engineering flows on the legacy database due to a lack of documentation.
Developed Flutter mobile prototypes in fast-paced 1-month loops, heavily contributing to UI/UX design.
Integrated payment gateways and ERP systems, improving internal customer service purchase workflows by 75%.
Managed DigitalOcean (Linux) and Windows Server instances, and integrated Firebase services.
Supported a platform serving 3,000+ daily active B2B clients in Bolivia, Chile, and Peru.

Co-Founder & Technical Advisor (Parallel Advisory Engagement) | V@COMM

Jan 2017 - Jun 2024•Bolivia

Developed 'Octopus' online payment and collection architecture, Android printing integration, and settlement logic as a secondary advisory role.
Designed Android point-of-sale flows with thermal printer integrations and automated settlement logic.
Built a Flutter digital wallet app with OTP verification, SMS gateways, and Firebase integrations.
Automated commission and daily settlement calculations, eliminating manual reconciliation.

Full-Stack Systems Developer | Tiempo de Cambio Operations Platform

Jun 2016 - Dec 2019•Bolivia

Built daily registration and reporting systems used by 100+ active users.
Implemented geospatial branch coverage tools with geofencing.
Delivered role-based websites and internal dashboards.

Junior Android Developer | TISMART (DATEC Division)

Jan 2015 - May 2016•Bolivia

Integrated REST APIs for billing and inspection tracking (CRE electric cooperative).
Implemented UI updates for banking mobile apps (BancoSol, Banco BISA) and the official Datec mobile app.
Contributed to Agile development cycles and production maintenance.

IT Support / Data Center Operations | DATEC LATAM

Aug 2014 - Dec 2014•Bolivia

Supported early-stage D-Cloud monitoring systems.
Maintained secure infrastructure workflows, monitoring tools, and followed operational protocols.
Built a foundational discipline in reliability, incident management, and production operations.

Education

Bachelor's in Systems Engineering — Universidad Católica Boliviana

2012 – 2017

Languages

English: Professional working proficiency (Based in the U.S.) · Spanish: Native

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