Daniel Salas
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About
I am a full-stack developer based in Mexico City, focused on building maintainable software for real business use. My work spans web applications, REST APIs, mobile-connected workflows, integrations, and production deployments.
I have shipped projects with Next.js, Django, .NET, PHP, Supabase, Firebase, and PostgreSQL, adapting the stack to the product instead of forcing the product into a preferred stack.
I also handle Linux VPS deployment responsibilities, including SSH access, SSL certificates, domains, DNS configuration, and release checks so products can move from development to production cleanly.
Professional Snapshot
Modern Application Delivery
I build web applications, REST APIs, and business workflows with a focus on maintainability, performance, and production readiness.
Backend and Integration Work
My work includes authentication flows, external APIs, webhooks, payment processes, and data models that support real operations.
Linux VPS Operations
I deploy and maintain products on Linux VPS infrastructure using SSH, SSL, domain configuration, DNS, and release validation.
Technical Focus
Frontend: Next.js, React, TypeScript, Tailwind CSS
Backend: Node.js, Django, .NET, PHP Slim Framework, REST APIs
Data: PostgreSQL, Supabase, Firebase
Operations: Linux VPS, SSH, SSL, DNS, deployment workflows
Experience Journey
View CV Source2023
2023 - Present
Freelance Full-Stack Developer
Building full web applications and backend integrations for independent projects and Upwork-style client delivery.
- Develop applications with Next.js, Django, .NET, and Node.js.
- Implement business logic, APIs, authentication, and database-backed workflows.
- Manage Linux VPS deployments with SSH, SSL, domains, and DNS configuration.
2024
Feb 2024 - May 2025 / Aug 2025 - May 2026
Full-Stack Developer · Criteria Inteligencia de Negocios
Delivered software for business operations, fiscal workflows, and mobile-connected products.
- Developed and maintained REST APIs using PHP and Slim Framework.
- Contributed to Flutter applications for fiscal solutions tied to SAT-certified workflows.
- Integrated Firebase, Supabase, payment methods, external APIs, and webhooks.
Recent work includes marketplace platforms, reservation systems, POS software, and supplier-facing portals.
- Built SEO-oriented platforms with Next.js and Supabase.
- Delivered reservation products with admin workflows and business operations support.
- Implemented CI/CD and production improvements for supplier-facing systems.
2020
2020 - 2025
B.S. in Computer Science Engineering
Completed computer science engineering studies while building production-oriented client and personal projects in parallel.
- Balanced academic training with hands-on delivery work.
- Built practical depth in application architecture, databases, and deployment.