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djacmarg/README.md

Senior Full-Stack Developer | SaaS | AI Automation | APIs | DevOps

I am a Full-Stack Developer with 14+ years of experience designing, developing, deploying, and maintaining web applications, SaaS platforms, business management systems, APIs, and content-driven platforms.

My experience covers the complete software development lifecycle — from requirements analysis and system architecture to database design, frontend development, backend/API development, third-party integrations, deployment, automation, and production support.

What I specialize in

Full-Stack Development

  • Next.js
  • React
  • JavaScript / TypeScript
  • Node.js
  • RESTful APIs
  • Strapi
  • PHP
  • CodeIgniter / Laravel

Databases

  • MySQL
  • PostgreSQL
  • MongoDB
  • Prisma
  • Mongoose

DevOps & Infrastructure

  • Linux / Ubuntu /Windows
  • Docker & Docker Compose
  • Nginx
  • PM2
  • Git / GitHub
  • SSL/TLS
  • VPS deployment
  • Production application management

AI & Automation

  • AI Agents
  • RAG (Retrieval-Augmented Generation)
  • LLM-powered applications
  • n8n workflow automation
  • Qdrant vector search
  • Ollama / self-hosted LLMs
  • Embeddings
  • AI-powered knowledge bases
  • Business process automation

I have worked on and developed solutions spanning SaaS, education technology, school management, learning management, inventory management, business administration, payment integrations, communication systems, CMS platforms, and AI-powered applications.

A particular area of interest for me is the intersection between full-stack engineering and AI automation. I enjoy taking an existing business process or application and determining where APIs, automation, AI agents, RAG, and intelligent workflows can create measurable improvements.

My approach is not simply to build applications that work, but to build systems that are maintainable, secure, scalable, deployable, and practical to operate in production.

I'm particularly interested in opportunities involving:

• Senior Full-Stack Development • SaaS & Multi-Tenant Applications • Next.js / React • Node.js & REST APIs • AI Application Development • AI Automation & n8n • RAG & LLM Applications • System Architecture • API & Third-Party Integrations • DevOps & Production Deployment • Long-term Remote Engineering Projects

I build software, automate business processes, and turn complex requirements into practical production systems.

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