Custom web applications
SaaS platforms and admin dashboards built with Angular and NestJS. Scalable, multi-tenant architecture ready to grow without rewrites.
Available for new projects
Software engineering that builds trust and solves business problems.
I'm Greiber Salas, a full-stack developer. I turn complex ideas into solid, fast and maintainable platforms — from first sketch to production.
Full-stackFront · Back · DB
B2B & SaaSReal production
End-to-endScoping to deploy
Services 01 02 03 04
End-to-end capabilities
I guide every project from technical strategy to deployment. No middlemen, no loose ends.
B2B portals and solutions
I digitize ordering processes, catalogs and ERP integrations, turning manual, chaotic workflows into efficient systems.
Robust APIs and backends
REST API design with NestJS or PHP, data modeling in PostgreSQL/MySQL, authentication, security and performance.
AI-powered digital products
AI built into workflows and products: from internal tools to micro-SaaS for professionals.
Tech stack
Production-proven tools
I pick each technology for the problem, not the hype. A modern, typed and maintainable foundation.
- Angular
- NestJS
- TypeScript
- PostgreSQL
- RxJS
- Signals
- REST API
- PHP
- CodeIgniter
- MySQL
- WebSocket
- JWT
- Node.js
- AI / LLMs
Projects 01 02 03
Selected work
A sample of systems I have designed and built to solve concrete business problems.
SaaS · Hospitality
POS system / Web back office
Management platform for the hospitality sector: real-time orders, cash register, catalog and reporting. Modular, multi-tenant architecture with live events.
AngularSignalsWebSocketREST
$ KDS › event received › table #12 ✓
B2B · Distribution
B2B ordering portal
Digitized a distributor's ordering process: mobile-first portal, one-click reordering, dynamic pricing and ERP integration.
AngularNestJSERPPostgreSQL
$ POST /orders › 200 OK › 142ms
Product · AI
AI-powered digital products
A line of productivity and wellbeing products for professionals, with AI-assisted prompts and workflows built in natively.
AI / LLMsAutomationContent
$ ai.generate() › output ready ✦
About
One developer, from start to finish
I'm Greiber Salas, a full-stack developer. I design and build custom web platforms: SaaS products, B2B portals, APIs and internal tools that businesses rely on every day.
I work with Angular and NestJS, PHP when the project calls for it, and PostgreSQL and MySQL databases. I am involved in the whole cycle: understanding the business, designing the architecture, building and shipping to production.
You work directly with me, with no middlemen: clear communication, frequent deliveries and technical decisions explained in business terms.
- Direct contactYou talk to the person writing the code.
- Product mindsetEvery technical decision serves the business.
- Maintainable codeTyped, documented and ready to grow.
How I work
A process that gives you peace of mind
Clarity at every stage. You always know where your project is and where it is heading.
01
Discovery
I understand your business and goals before writing a single line of code. We define scope and priorities together.
02
Architecture
I design the technical foundation: stack, data model and integrations. Decisions that prevent costly rewrites.
03
Iterative development
I build in short cycles with visible deliverables. You see real progress, not promises.
04
Deployment and support
I ship the system to production with quality and stay with you afterwards. The project doesn't end at deploy.
Shall we build something
that lasts?
Tell me what you have in mind. I'll reply with a clear, honest take on how to approach it — no strings attached.