Nelson Samuel Martinez Castillo

# Systems Engineer | Full-Stack Developer

Location HondurasDesired Salary UnspecifiedWork preference Full Time, Part TimeLinksNot setStatus   Actively looking Field / Industry Software Engineering

* SharePreferences:Relocation: NoNotice Period: ImmediateSkill Assessments:This user has not passed any tests yet

Languages:  English -   Spanish -

Report
[Overview](#overview)
* [Portfolio](#portfolio)

## About Me

I am a Technical Support Engineer and full-stack developer with hands-on experience supporting production SaaS platforms and building modern web applications. I focus on delivering reliable technical outcomes by troubleshooting issues quickly, analyzing root causes, and working across the full stack when needed.

I have experience debugging APIs, third-party integrations, and production incidents by reviewing logs, HTTP status codes, and database records. I am comfortable identifying problems in frontend, backend, and database layers, and I work to either implement fixes directly or escalate issues with clear technical context.

My development background includes building and maintaining SaaS products end-to-end using Next.js, React, TypeScript, Tailwind CSS, and Supabase. I have worked on features such as signed QR access control, atomic inventory holds, payment links, transactional email, PDF and Apple Wallet ticket generation, and multi-tenant architecture.

I also have experience supporting internal platforms in academic and enterprise environments. At UNAH, I provided technical support and maintenance for a registration and management platform, resolved production issues, and developed features such as QR code generation and scanning to improve access control and user workflows.

My technical strengths include REST APIs, object-oriented backend development, PostgreSQL, SQL, release and deployment management, and automated testing. I also work with tools and platforms such as GitHub, Linux, Vercel, CI/CD, Redis, and Supabase, and I am comfortable writing well-structured, type-safe code.

I am based in Honduras and work in English and Spanish. I am currently pursuing a Bachelor’s Degree in Systems Engineering at UNAH, and I am expected to graduate in December 2026.

## Skills

### [Python](https://jobicy.com/talent/python.md)[SQL](https://jobicy.com/talent/sql.md)[JavaScript](https://jobicy.com/talent/javascript.md)[React](https://jobicy.com/talent/react.md)[Linux](https://jobicy.com/talent/linux.md)[CI CD](https://jobicy.com/talent/ci-cd.md)[TypeScript](https://jobicy.com/talent/typescript.md)[Git](https://jobicy.com/talent/git.md)[Troubleshooting](https://jobicy.com/talent/troubleshooting.md)[GitHub](https://jobicy.com/talent/github.md)[Technical Support](https://jobicy.com/talent/technical-support.md)[HTML](https://jobicy.com/talent/html.md)[CSS](https://jobicy.com/talent/css.md)[PostgreSQL](https://jobicy.com/talent/postgresql.md)[Redis](https://jobicy.com/talent/redis.md)[Angular](https://jobicy.com/talent/angular.md)

## Experience

Technical Support Engineer & Developer @ Loyik  Jul 2025 - Present Provide frontline technical support for production SaaS web platforms, debug issues, and perform root-cause analysis across the full stack. Troubleshoot APIs and third-party integrations including payments, email, and authentication. Build and maintain two production SaaS platforms end-to-end using Next.js, React, TypeScript, Tailwind CSS, and Supabase. Work on features such as signed-QR access control, atomic inventory holds, payment links, transactional email, PDF and Apple Wallet tickets, multi-tenant architecture, role-based dashboards, and Excel import/export pipelines. Write SQL/PostgreSQL queries to investigate incidents, manage releases and deployments on Vercel, and ship well-structured, type-safe code with automated tests.

Web Developer (Part-time) @ Lunatech  Nov 2025 - May 2026 Built a corporate soil-analysis and management dashboard for Chumbagua sugar mill using Next.js, React, TypeScript, and Tailwind CSS on a Supabase backend. Developed interactive views for agricultural-plot visualization, fertility data, technical recommendations, rankings, and a 2D/3D lot viewer. Integrated data and authentication with Supabase within a multi-tenant platform.

Technical Support Engineer @ National Autonomous University of Honduras  Jul 2024 - Jun 2025 Provided technical support and maintenance for the Article 140 registration and management platform built with Angular and TypeScript. Troubleshot and resolved errors and production issues to keep the system running correctly for end users. Developed platform features including a QR code generator and QR code scanner for registration and access control, and debugged frontend components and fixed issues directly in the codebase as part of day-to-day support.

## Education

UNAH  Dec 2026  Bachelor's Degree in Systems Engineering

Portfolio not available.