## **DANIEL HACHAC SALAS** 

## **Full-Stack Developer** 

## Mexico City, Mexico | danielhachac@gmail.com | github.com/danihs2 

## **PROFESSIONAL SUMMARY** 

Full-Stack Developer with professional experience building web applications, REST APIs, mobile solutions, and production deployments. Experienced with Next.js, .NET, Django, PHP, Flutter, Supabase, Firebase, and PostgreSQL, including authentication, external integrations, webhooks, and payment flows. Focused on maintainable, scalable, business-oriented software with strong attention to performance, user experience, and reliability. 

## **PROFESSIONAL EXPERIENCE** 

**Full-Stack Developer** | Criteria Inteligencia de Negocios | Puebla, Mexico _Feb 2024 - May 2025 | Aug 2025 - May 2026_ 

- Developed and maintained REST APIs using PHP and Slim Framework for business software solutions. 

- Contributed to Flutter mobile applications for fiscal solutions connected to a SAT-certified PAC. 

- Integrated Firebase and Supabase for authentication, storage, and data synchronization. 

- Worked on an IAVE application for CAPUFE, integrating payment methods, external APIs, and webhooks. 

- Collaborated using Scrum, Git, and Gitflow, maintaining communication with technical teams and users. 

**Freelance Web Developer** | Independent Projects / Upwork _2023 - Present_ 

- Build full web applications using Next.js, Django, .NET, and Node.js. 

- Implement frontend, backend, authentication, API integrations, data models, and business logic. 

- Manage Linux VPS production deployments, including SSH, SSL, domains, and DNS configuration. 

- Deliver solutions focused on performance, SEO, scalability, and maintainability. 

## **SELECTED PROJECTS** 

**NorCalTreeConnect** | Tree services marketplace in the United States _Jan 2026 - Feb 2026_ 

- Developed a web platform connecting homeowners with tree trimming and maintenance professionals in Northern California. 

- Implemented the platform with Next.js and Supabase, prioritizing technical SEO, SSR, authentication, database management, and lead generation. 

- Designed a scalable architecture for service listings, user management, and organic search visibility. 

**Technologies:** Next.js, Supabase, Node.js, technical SEO, SSR, APIs. 

**Efecto Web** | Reservation system for Billar Efecto 

- Built an online reservation platform with an admin panel to confirm, reject, or reschedule booking requests. 

- Developed with Next.js and Django; deployed to a Linux VPS with SSH, SSL, domain, and DNS configuration. **Technologies:** Next.js, Django, Linux VPS, SSL, DNS. 

**Business Management SaaS** | Personal MVP for inventory, sales, and operations 

- Designed and developed a SaaS platform for business administration, inventory control, sales processes, data synchronization, and payment flows. 

- Built APIs, data models, and transactional processes focused on consistency, scalability, and production readiness. 

- Managed Linux VPS infrastructure, including SSL, domains, and production deployments. **Technologies:** Next.js, .NET, PostgreSQL, REST APIs, Linux VPS, SSL, DNS. 

## **EDUCATION** 

**B.S. in Computer Science Engineering** | Benemerita Universidad Autonoma de Puebla | Puebla, Mexico _2020 - 2025_ 

## **CERTIFICATIONS** 

**Google Data Analytics Professional Certificate** | Google _Feb 2024_ 

- Training in data analysis, data cleaning, visualization, and data-driven decision making. 

## **TECHNICAL SKILLS** 

Frontend: Next.js, React, JavaScript, TypeScript, Tailwind CSS, shadcn/ui. | Backend: .NET, Django, PHP Slim Framework, Node.js, REST APIs. | Mobile: Flutter. | Databases: PostgreSQL, Supabase, Firebase. | DevOps: Linux VPS, SSH, SSL, DNS, production deployments. | Tools: Git, GitHub, Gitflow, Scrum, Codex/Claude CLI. 

## **LANGUAGES** 

Spanish: Native | English: Intermediate / conversational