
Backend Development Pragmatic System Implementer & Custom Solution Architect Coding PHP Symfony NodeJS Lua Laravel Python Extensive hands-on experience modifying, extending, and optimizing backend systems in PHP (Zend/Symfony) with MySQL over 15+ years, using Concrete-CMS and PrestaShop. NodeJS for about 2 years, Lua for 1 year, and various supporting Python scripts throughout as needed. This current site has Fastify & MongoDB as backend for its AI Chat. Proven ability to quickly onboard, analyze, and deliver robust solutions in both current and legacy stacks. Functional, OOP & async Domain & Event Driven Architectures xDebug, DataDog, Blackfire, qCachegrind REST APIs, streaming & Sockets CDP & Analytics integrations Message queues & eventing ServerSide personalization User and session management —·¤·∞•«⟨≡&&≡⟩»•∞·¤·— Content & Commerce Systems While primarily focused on frontend, I possess deep domain expertise in; Contentful — PHP integration through workers & Live Edit Concrete CMS — Zend/Symfony Advanced Multi-site builds Prestashop — Complex features & performance tuning OpenResty — Lua enhanced NGINX ·―<=[&&]>=―· Databases MySql MongoDB Redis GraphQL Supabase Firebase MySQL and PostreSQL have been my main database systems for 15+ years. MongoDB and Redis during core projects along my career, GraphQL, Supabase, and Firebase incidental and minor projects. ·~•◁[≈&&≈]▷•~· Contact Delft, The Netherlands linkedin/robertjansen hire@robertjansen.dev Style Preferences Theme Palette Appearance Text Smoothing Corner Smoothing

Backend Development

Pragmatic System Implementer & Custom Solution Architect

Coding

PHP
Symfony
NodeJS
Lua

Laravel
Python

Extensive hands-on experience modifying, extending, and optimizing backend systems in PHP (Zend/Symfony) with MySQL over 15+ years, using Concrete-CMS and PrestaShop. NodeJS for about 2 years, Lua for 1 year, and various supporting Python scripts throughout as needed. This current site has Fastify & MongoDB as backend for its AI Chat.

Proven ability to quickly onboard, analyze, and deliver robust solutions in both current and legacy stacks.

Functional, OOP & async
Domain & Event Driven Architectures
xDebug, DataDog, Blackfire, qCachegrind
REST APIs, streaming & Sockets
CDP & Analytics integrations
Message queues & eventing
ServerSide personalization
User and session management

—·¤·∞•«⟨≡&&≡⟩»•∞·¤·—

Content & Commerce Systems

While primarily focused on frontend, I possess deep domain expertise in;

Contentful — PHP integration through workers & Live Edit
Concrete CMS — Zend/Symfony Advanced Multi-site builds
Prestashop — Complex features & performance tuning
OpenResty — Lua enhanced NGINX

·―<=[&&]>=―·

Databases

MySql
MongoDB
Redis

GraphQL
Supabase
Firebase

MySQL and PostreSQL have been my main database systems for 15+ years. MongoDB and Redis during core projects along my career, GraphQL, Supabase, and Firebase incidental and minor projects.

·~•◁[≈&&≈]▷•~·