Skip to main content
Open to opportunities

Szabolcs Sajben

Full-Stack Web Developer

Ruby on Rails & security-focused. ~10 years building and modernizing high-traffic e-commerce, media, and SaaS platforms.

Cardiff, UK
PHP
Laravel
Ruby on Rails
JavaScript
TypeScript
Next.js
WordPress
Security
What I Do

Skills & Expertise

Tap any skill to learn more about my experience.

Backend Development

PHP 8, Laravel, Ruby on Rails, Symfony – scalable platforms and API layers.

Frontend & CMS

Next.js, React, Vue.js, WordPress (Trellis/Bedrock/Sage) + 20+ custom ACF blocks.

Performance

Up to 40% faster load times via caching, query tuning, and asset optimization.

Leadership & Collaboration

Led teams of 2–4; cross-functional squads and cross-cultural stakeholder work.

DevOps & Security

Docker, CI/CD (GitHub Actions), DigitalOcean, Wordfence/Aikido vulnerability management.

Modernization

Laravel 9β†’12 upgrades, legacy Java/C# modernization, third-party API integrations.

My Journey

Career Roadmap

Key milestones in my professional development.

2025
Present

Full-Stack Developer

Coreβ€’
Cardiff, UK

Operated 12+ WordPress sites (Trellis/Bedrock/Sage) and built 20+ custom ACF blocks. Delivered Next.js features in a 6-person cross-functional squad. Modernized Laravel classic-cars marketplace (9β†’12) with vehicle API integration, cutting import time ~30%. Owned security (Wordfence + Aikido) and full DevOps (Docker, CI/CD, Nginx, DigitalOcean).

WordPress
Next.js
Laravel
Tailwind
Docker
CI/CD
Wordfence
DigitalOcean
2022
3 years

PHP Developer

Box UKβ€’
Cardiff, UK

Upgraded DesignSpark from PHP 7.4/Symfony 2.4 β†’ PHP 8/Symfony 5.4 (25% throughput gains). Built YAML-driven mega-menu CMS, integrated FastSpring payments + HubSpot CRM, expanded Optimizely A/B testing. Contributed TypeScript/SASS UI components from Figma.

PHP
Symfony
TypeScript
SASS
FastSpring
HubSpot
Optimizely
2018
3 years

Freelance Full-Stack Developer

Remoteβ€’
Remote

Shipped WooCommerce plugins (60k+ installs) and Vue/Laravel e-commerce platforms. Built viewplex.io (THREE.js 360Β° virtual tours + subscriptions, later acquired by a real estate company). Managed 10+ concurrent clients end-to-end including CI/CD and maintenance.

Laravel
WooCommerce
THREE.js
Vue.js
CI/CD
2015
3 years

Early Career

Various (SourceCode Labs, Quantina Intelligence, Fresh Consulting)β€’
Cardiff, UK

Web Developer at SourceCode Labs: led a team of three migrating a CMS to WordPress and contributed to a Laravel + ES6 + THREE.js mapping application. Junior Software Developer at Quantina Intelligence: modernized flagship Java software, updated MQL4 trading tools, and developed C#/.NET applications. Apprentice IT Engineer at Fresh Consulting: supported IT across five schools and performed server maintenance.

WordPress
Laravel
ES6
THREE.js
Java
C#/.NET
MQL4
IT Support

What’s Next?

Seeking opportunities in Japan to deliver technical leadership, pragmatic execution, and security-conscious development.

Get in Touch