Senior PHP Developer for Agencies

Agencies rarely need "a developer" – they need someone who fits into a running project without a long onboarding, talks to the team like a senior and delivers what was promised. That is exactly how I work with agencies: as technical reinforcement on demand, with clear agreements and without your client noticing a difference.

How I support agencies

Capacity on demand

A project is bigger than planned, a developer is out, three deadlines collide. I join for weeks or months – in your repository, your workflow, your tools.

Symfony and PHP tasks not covered in-house

Complex integrations, data migrations, background processing, performance problems, architecture decisions – the topics you need a senior for, but not permanently.

Shopware development on your behalf

Plugins, theme customization, migrations from Shopware 5 to 6, performance – as a Shopware freelancer with years of practice, in your agency's name.

Code review and second opinion

Before something goes live or before a quote goes out: an independent assessment of quality, risks and effort.

Emergency response

Store down, import broken, security incident, the client's developer is gone. I look at it at short notice, stabilize and document what happened.

Legacy takeovers for new clients

Your agency wins a client with a grown application. I do the assessment and the modernization, you keep the client relationship.

How the collaboration works

• White-label possible: on request I do not appear towards your client; communication runs through you or – if you prefer – directly with the client in your name.
• Your tools: Git, ticket system, chat, deployment – I adapt instead of bringing my own processes.
• Reliable communication: short status updates, early warning about risks, no surprises at the deadline.
• Confidentiality: NDA and data processing agreement as needed, no reference mentions without approval.
• Billing: hourly or daily rate, billed monthly; allotments for longer collaborations are possible.

Who it fits

Digital and e-commerce agencies, system houses and software companies in the DACH region that implement Shopware, Symfony or PHP projects for their clients and need reliable senior capacity without a permanent hire. Also for intermediaries looking for a freelancer with a solid profile – the CV contains tech stack and availability.