Felix Dziekan

Felix Dziekan

Senior TYPO3 / Full-Stack Web Developer & Freelancer

Felix Dziekan

Senior full-stack web developer with 20+ years of experience — owning the full website lifecycle from CMS selection and launch through relaunch to operation and maintenance. I run my own TYPO3 multisite (since v4.2) powering several web portals with modern React/Next.js frontends, and operate my own Backend-as-a-Service platform with five production micro-SaaS products. As a founder/CTO I think in business value, not just code — with a strong focus on performance, security and DevOps. German native, English fluent.


Work Experience

Founder & CTO

serie3 Web Development | 02/2023 – Present

Founder and CTO of my own Backend-as-a-Service platform, running five production micro-SaaS products (including Bewerbungskit and MyMediaPlanner). End-to-end responsibility for architecture, React/Next.js frontends, infrastructure automation and stable 24/7 operation — with secure, reliable deployments built for 10+ projects.

Software Consultant

WuBv (Apotheken Umschau) | 02/2025 – 08/2025

Modernised an existing codebase: introduced automated backend unit tests and extended a Symfony client for the Interred editorial system.

Software Developer / CTO

Smart Abstract | 11/2023 – 12/2025

Maintained and extended an existing (legacy) software landscape, kept it running reliably, and continuously optimised and scaled the systems. Frontend work in an Angular environment.

Senior PHP Developer

Cimenio | 11/2022 – 02/2023

Backend developer on a verified-reviews platform: extended the API, built new features and documented the existing codebase.

Senior Symfony Developer / System Architect

PosterXXL | 06/2021 – 11/2022

At the EU’s largest print-on-demand provider: extended the web shop and checkout, then architected and integrated an AI image-enhancement pipeline (“Perfectly Clear AI”) over AWS (S3/SQS), scaled to 1M+ product images.

Full-Stack Developer / Architect

leadquelle.ch | 11/2020 – 01/2021

Designed the MVP and infrastructure for a lead-generation platform (React, PHP/Symfony, headless REST API, GitLab CI/CD).

Backend Developer

Freelance (EnBW, Sabre Hospitality, PSG Marketing) | 2018 – 2020

Backend development and security updates on live production systems — PHP/Symfony and Drupal, without downtime.

Own Web Portals

Founder/CTO of several TYPO3-based portals on a shared multisite: felix-dziekan.de (developer & TYPO3 blog), diversplace.net (the largest German-language diving lexicon, 600+ terms, successor to felixtravelblog.de), mynomadplace.com (travel) and mymediaplanner.com (headless TYPO3 + Next.js). Responsible for sitepackages, TypoScript, headless APIs and ongoing operation.