Dennis Schwenker-Sanders

Does your project need to be built cleanly and delivered on time, but you lack in-house expertise or capacity? This is exactly why agencies and technical teams in SMEs commission me.

My focus is on backend development with Symfony and PHP. From API integration and Shopware extensions to refactoring projects in existing codebases. I have been working with these technologies for over 15 years and know the typical points where projects get stuck.

Reference excerpt: 4.5 years of legacy migration of a B2C marketplace to Symfony, payment backend refactoring, ERP integrations (Navision, nextPIM), payment modules for Mollie and PAYONE, parental leave cover in an enterprise Symfony project.

AI-powered development is not a buzzword for me. I work daily with Claude, Claude Code, OpenAI Codex, and GitHub Copilot for code analysis, architecture reviews, and accelerated implementation. This shortens project timelines without compromising code quality and maintainability.

What clients appreciate about working with me: direct communication without detours, realistic assessments instead of pleasing statements, and code that is still maintainable in two years. I don't take on ten projects simultaneously; whoever books me has my full attention.

Typical project types:

Location: Sandkrug near Oldenburg, remote nationwide