pablo.rejón Journey Blog

Hello there! 👋

I'm Pablo Rejón.

Computer Engineering student & IT professional

I build and ship full-stack software — from clinical AI platforms to self-hosted infrastructure on my own VPS. Final-year Computer Engineering student, graduating in 2027.

About me

I'm a final-year Computer Engineering student at the University of Granada, back from an Erasmus exchange at Università Roma Tre. I combine academic training with real-world IT experience: I worked as IT Infrastructure & Support Manager at a biotech company — managing infrastructure, resolving incidents, and contributing to IT process improvement projects.

I build web apps with Java/Spring, TypeScript and Python — and I run my own Linux VPS where my projects live in production behind Docker, Caddy and CI/CD pipelines. Currently focused on full-stack and cloud/DevOps engineering.

GitHub contributions chart

Skills

Java Java Spring Boot Spring TypeScript TypeScript JavaScript JavaScript Python Python Go Go C# C# React React Next.js Next.js Node.js Node.js PostgreSQL PostgreSQL MySQL MySQL Docker Docker Linux Linux Git Git AWS AWS Apache Spark Spark

Experience

2024 — Present
IT Infrastructure & Support Manager · Biotechnology Company

Full management of IT systems and infrastructure across a biotech environment. Technical incident resolution, user support, access and permissions management, weekly backup procedures. Contributed to IT process improvement projects organization-wide.

IT Infrastructure Systems Administration User Support Backup & Recovery
2026
Cybersecurity Bootcamp · University of Málaga · funded by Google

Intensive hands-on cybersecurity training programme organized by the University of Málaga (UMA) and funded by Google.

Cyber Málaga Bootcamp — UMA program with support from Google.org
Cybersecurity Google UMA
2025 — 2026
Erasmus Exchange · Università Roma Tre 🇮🇹

International academic exchange in Rome. Software engineering and web systems coursework — SIW projects (Football Manager, Art Gallery) deployed to production on a self-managed VPS.

International Spring Boot Production
2022 — Present
B.Eng. Computer Engineering · University of Granada (UGR)

Core coursework in algorithms, data structures, operating systems, networks, databases, and software engineering. Personal projects applying theory to real-world problems.

C++ PHP MySQL Networks

My works

TriajIA — emergency triage platform CLOSED BETA

TriajIA

Clinical triage platform for ERs: AI-guided patient kiosk + clinical workspace with Manchester scale, NEWS2/PEWS scoring, pediatric dosing and allergy detection. Multitenant isolation, RBAC and immutable audit log.

Next.js TypeScript Prisma PostgreSQL TailwindCSS
Vessel — self-managed Micro-PaaS engine OPEN SOURCE

Vessel

Self-managed Micro-PaaS engine written in Go. Automates container provisioning via Docker Engine API and handles dynamic zero-downtime routing through Caddy HTTP API. High-security hardening (subtle time compares, request limits).

Go Docker PostgreSQL Bash
↗ Code
SkyFlow-Insights — distributed flight delay analytics OPEN SOURCE

SkyFlow-Insights

Distributed Big Data pipeline analyzing ~7M flight records: the same business logic implemented and cross-validated in Hadoop MapReduce, Hive and Spark — identical results across all three. Run locally on a Dockerized cluster and in production on AWS EMR with S3.

Apache Spark Hadoop AWS Python Docker
↗ Code
Football Manager — tournament management platform LIVE

Football Manager

Tournament management platform: Thymeleaf + Spring Security 6 with a React 18 live standings table over REST. N+1 queries solved with JPQL fetch joins. Dockerized on a Hetzner VPS with anti-bot registration.

Spring Boot Java React PostgreSQL Docker
↗ Live
Organizator — self-hosted productivity hub SELF-HOSTED

Organizator

Full-stack productivity hub (P.A.R.A.) migrated from managed cloud to a self-hosted Hetzner VPS: custom JWT auth, native PostgreSQL, Docker Compose behind Caddy, CI/CD over SSH and DevSecOps hardening.

React Node.js PostgreSQL Docker GitHub Actions
Bramasole — art gallery e-commerce LIVE

Bramasole

Art gallery e-commerce: catalog, cart, per-size stock and full checkout with admin/customer roles. React + Vite SPA embedded into Spring Boot via a multi-stage Docker monolith, live on a Hetzner VPS.

Spring Boot React Vite PostgreSQL Docker
↗ Live
CampoSync — agricultural management SaaS COMPLETED

CampoSync

Agricultural SaaS for Spanish advisors solving the Digital Field Notebook (CUE): regulator-compliant SIEX/FEGA XML export plus a Big Data layer — retrieval benchmarks (TF-IDF, BM25, pgvector) and an N+1 query benchmark with 100k records (JOIN FETCH: 3.6× throughput).

Spring Boot Java React Vite PostgreSQL
Samurai Defense — 2D action-strategy game OPEN SOURCE

Samurai Defense

Complete 2D action-strategy game built in Unity (C#): 5-level campaign, auto-battler combat with multi-target AI, ally economy, persistent upgrade shop, final boss and Android touch controls. Shipped: tutorial to credits.

Unity C# Android
↗ Code

More on GitHub

Contacts

Have an opportunity or a question? My inbox is open.

pablorejoncamacho@gmail.com