Services

Hands-on development, stabilization, and migration of production backend systems.

I work project-based and operationally. The focus is on technical execution, operational stability, and traceable results — without management roles or organizational overhead.

Backend Development (PHP / Symfony)

Development and extension of production backend systems using Symfony and PHP, with a focus on maintainable code, clean interfaces, and stable runtime behavior.

Symfony 5/6/7, REST APIs, worker architectures
Extension of existing platforms
Refactoring and technical consolidation

EU-Compliant Infrastructure & Operational Migration

Hands-on transformation of live backend and infrastructure systems into EU-compliant, auditable, and reliably operable setups. Implemented step by step, without disrupting production systems.

Concrete changes to infrastructure, deployment, and runtime setups
Refactoring backends for clear data and system separation
Migration of sensitive data to EU-based operating environments
Replacement or decoupling of critical external dependencies
Technical documentation derived directly from the implemented system

Legacy Modernization & Remediation

Takeover of grown systems with technical debt. The goal is a controllable and maintainable code and system structure.

Analysis of existing code and deployment structures
Incremental modernization without a big-bang approach
Reduction of complexity and failure risks

AI Integration & Automation

Integration of AI functionality into existing applications, pragmatic and production-ready.

Integration of OpenAI APIs
Automated text, document, and analysis workflows
Cost control, logging, and monitoring

Databases, SQL & Performance

Stable data models and performant queries as the foundation of reliable applications.

MySQL, MariaDB, Oracle, SQLite
Query, index, and data model optimization
Reporting and analytics structures

DevOps, Deployment & Operations

Design and stabilization of reproducible runtime and deployment environments.

Linux servers (Debian, Ubuntu, Red Hat)
Docker, CI/CD, automated deployments
Logging, monitoring, backup, and recovery concepts

Code Quality & Stability

Improvement of technical quality in live systems without interrupting operations.

Static analysis (PHPStan, linting)
Security and dependency checks
Traceable changes and clean releases

Technical Reviews & Second Opinion

Independent technical evaluation of existing systems or planned implementations.

Architecture and code reviews
Risk and maintainability assessment
Concrete, written recommendations

Suitable for projects with clear objectives, regulatory requirements, and operational implementation needs. Availability is project-based, remote or on-site.

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