Senior Software Developer

Interfaces, backend and web systems — reliable in production.

I build REST APIs, integrations and web applications using Symfony or plain PHP.
Focus: clear data flows, solid persistence (MySQL, MSSQL, PL/SQL/APEX) and maintainable implementations.

Web3 Symfony PHP REST / OpenAPI MySQL, MSSQL, PL/SQL WordPress TYPO3 Docker

Summary

  • Fabian Georgi
  • 18+ years of development experience
  • Agency & industrial projects, production-grade
  • Focus on integration, data, performance

Profile

Senior-level delivery focused on backend, integrations and operations. Clear architecture, robust error paths, traceable changes.

I’m Fabian Georgi. I’ve built software for many years across different environments: freelance, my own software agency, agency teams and industrial companies. This gives me both delivery speed and reliable handovers, operational thinking and experience with legacy landscapes.

I’m strongest where systems must work together: APIs, data models, synchronizations and interfaces between web, commerce and ERP/inventory systems. I also take on CMS projects (WordPress/TYPO3) when updateability, performance and deployment processes must be done properly.

How I work

  • Implementation with operations and failure cases in mind
  • Documentation: OpenAPI, README, runbooks when needed
  • Delivery: CI/CD, reproducible deployments
  • No overengineering, but clear boundaries

Services

Integration and backend first — complemented by web/CMS when it makes sense end-to-end.

REST APIs & Services

Building APIs with Symfony or plain PHP — versioned, documented, secured.

  • OpenAPI/Swagger, consistent payloads
  • Auth: JWT/OAuth, roles/permissions
  • Robust error handling, idempotency, retries

Data & Persistence

Data modeling, migrations and efficient queries — with growth and maintenance in mind.

  • MySQL, MSSQL, SQL/PL/SQL
  • APEX environments (PL/SQL) project-specific
  • Performance: indexes, query optimization, caching

Integration & Operations

System synchronization plus clean delivery and operational processes.

  • ERP/commerce/PIM connections, data sync
  • Docker, CI/CD, reproducible deployments
  • Migrations (DNS/TLS/hosting) with downtime focus

Web & CMS (WordPress / TYPO3 / Symfony)

When website and backend must be designed together: updateable, fast, maintainable.

  • Relaunch/takeover, stabilization, security updates
  • Custom extensions/plugins, API integrations
  • Performance: caching, CDN/reverse proxy

Technical ownership

Especially in critical phases: assessment, plan, delivery and clean handover.

  • Assessment of existing systems (risks, roadmap, quick wins)
  • Architecture and interface concepts
  • Documentation, knowledge transfer, code reviews

References

A selection of typical deliverables. Details depending on NDA on request.

Product & inventory middleware

Symfony/PHP · REST/OpenAPI · MySQL · JWT · Shopify · ERP

Central web tool for managing product master data and inventory. API-first approach, sync mechanisms, monitoring and clear data ownership.

Hosting migration & production stability

Linux · Docker · CI/CD · DNS/TLS · release processes

Migrations and operational handovers including hardening, deployment workflows and downtime minimization. Goal: predictable releases and stable operations.

TYPO3 backend maintenance (B2B)

TYPO3 · hosting · Git · deployments · API integrations

Rebuild and continuous development including hosting setup, system hardening, deployment processes and technical alignment with the client.

Long-term operation of a community platform

operations · migrations · performance · maintenance

Building and operating a large community platform (e.g. golf2forum.de) including maintenance, evolution and performance work over many years.

Technology

Overview of core technologies. What matters is the right solution — not the longest list.

Backend / APIs

Symfony PHP REST OpenAPI JWT/OAuth

Data

MySQL MSSQL SQL PL/SQL APEX

Web / Operations

TYPO3 WordPress Docker CI/CD Linux

Additional experience: C#, C/C++, Android (Java), computer vision (TensorFlow/Keras), smart vision/MDE, Agile/Scrum, Jira, Dynamics 365, SAP S/4HANA, SAGE.

Career

Key roles at a glance. Full CV on request.

  • 09/2025 – heute · Senior Software Developer · Häcker Küchen GmbH & Co. KG
  • 01/2024 – 08/2025 · Backend Developer · HDNET GmbH & Co. KG
  • 02/2020 – 12/2023 · Software Engineer Full-Stack · coolmobility GmbH
  • 02/2018 – 05/2023 · Systemintegrator & Prozessentwickler · HARDO Maschinenbau GmbH
  • 01/2015 – 10/2023 · Geschäftsführer · inoWRX UG (haftungsbeschränkt)
  • vor 2015 · Freelancer · Webdesign / IT-Service

Key facts

  • Collaboration: remote / on-site by arrangement
  • Languages: German / English
  • Personal: married, one daughter

Contact

A short outline is enough: goal, systems, timeline. I’ll respond with a concrete assessment and next steps.

What I need for a quick response

  • Goal / problem in 2–3 sentences
  • Systems involved (CMS/commerce/ERP/CRM, databases)
  • Interface type (REST, batch, events) and data volume
  • Timeline (MVP/go-live) and dependencies
  • Optional: budget range