Josue Diaz
Software Developer
Web · Desktop · Mobile systems
Selected Operational Software
Fhyona
Manufacturing & Warehouse Management
Manufacturing operations platform for planning and execution, real-time inventory by warehouse location, purchasing, sales, and fiscal workflows.
Visit live site
React
TanStack Start
Go
PostgreSQL
PostGIS
DockerSchedHold
Appointment Scheduling Platform
Live demo views · Dashboard, sessions, attendance, clients, and schedules · Synthetic data
Session planning with drag-and-drop, reusable schedules, client and worker records, controlled booking links, operational dashboards, a financial module, and Redis-backed session controls for secure concurrent access.
Visit live siteReact
ShadCN UIGoPostgreSQL
RedisNITROOS
Multi-Role Booking & Operations
Android app screenshots · Client experience
Multi-role mobile system for appointments, client loyalty, and staff schedule management, with barber availability and checkout plus administration for products, payments, and reporting.
React Native
Expo
Java
Spring BootPostgreSQLLaundry Manager
Cross-Platform Desktop App
Live demo views · Dashboard, laundry orders, inventory, populated sales checkout, and machine selection · Synthetic data
Cross-platform desktop software for laundry orders, machines and history, sales and payments, customer and warehouse records, reports, and Excel export, replacing paper-based tracking.
Svelte
TauriGo
MySQLI'm a Software Developer based in Lima, Peru, with 6+ years turning ideas into production systems. I build across platforms, web apps, desktop tools, and mobile experiences, delivering solutions that are fast, reliable, and built to last. From scheduling platforms to manufacturing systems, I've shipped software that real businesses depend on daily. I have hands-on experience with automated testing, microservices, and APIs. I use and evaluate Claude Code, Cursor, Codex, and Pi in spec-driven development (SDD) workflows, continually exploring ways to improve productivity and software quality. I care about clean architecture, developer experience, and writing code that the next engineer will thank me for. I graduated with a B.S. in Systems Engineering from Universidad Peruana Unión (UPeU).
What I Work With
Interfaces & Client Apps
Web, desktop, and mobile toolkit
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JavaScript / TypeScript
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React Native / Expo
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Tailwind / ShadCN UI
Services, Data & Delivery
APIs, databases, and delivery toolkit
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Supabase / Convex
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Node.js / Express
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Practices & Patterns
- Clean Architecture
- Domain-Driven Design
- Automated End-to-End Testing
- CI/CD Pipelines
- Containerization
- Microservices
- REST API Design
- Real-Time Systems
- Agile / Scrum
Where I've Built Things
Software Developer
Freelance FreelanceBuilding end-to-end solutions across web, desktop, and mobile for small businesses, with Docker/CI/CD deployments to a Dokploy-managed VPS.
- Delivered multi-platform solutions with optimal tech stacks per client
- Built a scheduling platform with financial tracking and Redis-backed session and authentication controls for secure concurrent access
- Engineered cross-platform desktop app with Tauri for business management
Software Developer
CudesiLed migration of legacy Next.js/NestJS system to React TanStack Start and Go. Designed geospatial schemas and deployed containerized services.
- Delivered Fhyona: a production ERP covering sales, inventory, production, and warehouse operations
- Implemented protected routes with password hashing and Paseto-based authentication
- Key member of winning team in national startup competition in Peru
- Significant performance and security gains through modern architecture
Software Developer
Freelance FreelanceApplications, prototypes, and landing pages with iterative feedback cycles.
- Created prototypes for Sales System and Appointment Scheduler
- Designed Neo4j graph models for connected business data
- Iterated on architecture based on client feedback
JavaScript Developer
Code&CareBuilt React, Next.js, and React Native client apps plus Express/NestJS services for a global consulting agency based in Ukraine.
- Mentored new engineers across time zones, accelerating onboarding
- Delivered across distributed, multicultural teams
Software Developer
CudesiDiverse web solutions from CMS to interactive testing tools. Drove modern frontend adoption.
- Advocated for React/Node.js adoption and delivered internal training, supporting faster development cycles
- Built vocational test and multi-step form systems
Let's Build Something
I'm actively looking for full-time remote opportunities in LATAM-friendly companies. If you need a developer who owns features end-to-end across web, desktop, and mobile, let's talk.