Hi, I'm Luis.
Software Developer & IT Professional
I build practical software for security, automation, and cloud infrastructure — combining full-stack development with real-world experience running IT systems for businesses. Currently finishing my MSIT and looking for my next challenge.
Developer first.
IT operator second.
I'm Luis Alberto Colón — a software developer and IT professional finishing my Master's in Information Technology at the University of West Florida. I write code that solves real problems, and I understand the infrastructure it runs on.
Through founding NodeLink Technologies LLC, I've designed IT support systems, built MSP workflows from scratch, and developed tools that real businesses depend on — giving me the kind of production experience most junior developers don't have until year three on the job.
My edge: I can ship full-stack features and reason about cloud architecture, network security, and system constraints. I don't need to be walked through how production environments work — I've built and maintained them.
Software Development
Full-stack apps with Next.js, TypeScript, FastAPI, and REST APIs — focused on practical, deployable products.
Cybersecurity
DNS hardening, email authentication (SPF/DKIM/DMARC), endpoint protection, and external vulnerability scanning.
Cloud Infrastructure
AWS hands-on: VPC design, IAM policies, EC2 with Auto Scaling, CloudWatch monitoring, and RDS deployments.
Networking & IT
VLANs, firewall rules, DNS/DHCP, VPNs — deployed on real hardware including Ubiquiti environments.
What I work with
A full-stack skill set spanning development, cloud, networking, and security — built through coursework, personal projects, and running a real IT business.
Frontend
Backend & APIs
Cloud & Infrastructure
Networking
Security
Tools & Platforms
Things I've built
Multi-tenant MSP monitoring dashboard with database-level security
A production-ready SaaS dashboard for Managed Service Providers (MSPs) to monitor client health, ticket queues, and SLA metrics through a centralized pane. Data isolation is strictly enforced at the database layer using PostgreSQL Row-Level Security (RLS), ensuring robust multi-tenancy. Built with a modern stack featuring schema-first validation, automated CSV parsing, and secure PKCE authentication flows.
Key Features
- Multi-tenant architecture with Postgres Row-Level Security (RLS)
- Real-time client health monitoring (Devices, Tickets, Backups)
- SLA metric tracking and enforcement
- Secure authentication via Supabase (PKCE flow)
- Schema-first validation with Zod and Prisma
Automated external threat surface analysis for small businesses
A web-based security audit tool that scans a company domain for real external vulnerabilities: email authentication gaps (SPF/DKIM/DMARC), SSL/TLS misconfigurations, exposed ports, HTTP header weaknesses, and DNS hygiene issues. Calculates a weighted risk score and generates a branded PDF report — giving SMBs actionable security intelligence without hiring a consultant. Built as a lead-gen tool for NodeLink Technologies MSP prospects.
Key Features
- Automated DNS security audits (SPF, DKIM, DMARC)
- SSL/TLS configuration and certificate validation
- Network port scanning and service identification
- Automated PDF report generation with risk scoring
- Lead-generation workflow for MSP services
Tamper-proof audit logging powered by smart contracts
A blockchain-based audit logging system that gives small businesses an immutable, verifiable record of security-relevant events - login attempts, permission changes, configuration updates, and data access. Each even is hashed and written to an Ethereum smart contract, making the audit cryptographically tamper-evident even from privileged insiders. Designed to help SMBs meet compliance requirements (HIPAA, SOC 2) without the cost of enterprise SIEM platforms
Where I've worked
Founder & IT Consultant
Built NodeLink Technologies from zero — designing service offerings, building internal tooling, and establishing the technical and operational foundation of an MSP business targeting small businesses and medical offices in the Tampa Bay area.
- Designed and documented scalable IT support service packages for SMBs, including tiered response SLAs and onboarding workflows
- Built MSP platform infrastructure using Atera RMM and SuperOps PSA — configuring automation rules, alert thresholds, and remote access policies
- Deployed and managed endpoint protection, cloud backup (Acronis), and patch management across client environments
- Developed internal automation scripts (PowerShell, Python) to reduce manual IT support overhead and standardize maintenance tasks
- Wrote technical SOPs, client-facing documentation, and network topology diagrams for every engagement
- Configured Microsoft 365 tenants including Exchange Online, Teams, SharePoint, conditional access, and MFA policies
- Designed and maintained Ubiquiti network infrastructure including VLAN segmentation, firewall rules, and wireless SSIDs for multi-site setups
Academic background
Let's work together
I'm actively looking for junior developer, cloud, and IT roles — and always open to interesting projects. Reach out and let's talk.
luis@nodelinktechnologies.com
GitHub
github.com/lcolon231
www.linkedin.com/in/luiscolon31/
Tampa, Florida — open to remote & hybrid roles