Juan
Cartagena
Full-stack developer experienced in .NET, Angular and React. I design n8n and AI-driven automations that streamline operations, and I'm currently building a B2B SaaS for the restaurant industry.
About me
A developer who builds
real products.
Software Engineering student in my final semesters. I currently work at Telesentinel, where I design n8n and AI automations that streamline operational processes. Previously, at SoftwareOne, I led the production migration of a corporate application from Angular 12 to 16 and delivered end-to-end modules with .NET and Angular.
In parallel, I'm independently building a B2B SaaS for restaurant management and advising local businesses in Bogotá on building their digital presence.
I specialize in clean architecture and process automation, with a focus on building efficient solutions that deliver real value.
My stack
Professional experience
Where I've worked
Software Developer
Telesentinel · Bogotá, Colombia
- I design and operate automation flows in n8n that integrate internal systems and third-party APIs, removing manual work from the operations team.
- Implemented automated alerts, notifications and reports that deliver operational information to teams without human intervention.
- I build AI agents on top of n8n to classify events, respond automatically and support repetitive decisions.
Software Developer
SoftwareOne · Bogotá, Colombia
- Led the migration of the core application from Angular 12 to 16, adopting standalone components and refactoring the .NET/C# back-end.
- Built a cross-cutting module (back-end + front-end) with advanced filters and UX improvements that reduced navigation friction for end users.
- Implemented unit tests, increasing coverage and improving long-term maintainability.
Projects
Services
What I offer
Process automation with n8n & AI
Flows that connect your systems (CRM, invoicing, WhatsApp, spreadsheets) and remove manual work: alerts, automated reports and AI agents.
Landing pages & websites
Professional websites for local businesses and entrepreneurs. Custom design, hand-written code, ready for Google.
Custom web applications
Complete systems to automate processes: admin dashboards, B2B platforms, MVPs with scalable architecture.
Local digital presence
Google Business Profile + WhatsApp Business + local optimization so your business shows up when customers search for you.
Different project or need something more specific? Tell me your idea.
Have a project? Let's talk.
I'm available for freelance work, collaborations and interesting projects. Tell me your idea.