60–80 senior hours
Full-stack and AI development from the engineer who knows the codebase. Scaled up or down month to month.
03 · 60–80 h / month
Retainer
The engineer who built the product keeps building it. A fixed block of senior hours a month, no recruiting, no ramp-up, cancel any month.
Price
from €3,000/mo
Included
60–80 senior hours
Included
Weekly call + daily Slack
Included
Same-day emergencies
Per month80h
Same-day fixes24h
Weekly call1:1
No lock-in∞
How it works
A senior AI engineer costs €90K–€120K a year plus three to six months to hire and ramp up. The retainer starts at €3,000 a month for 60–80 hours from someone who already knows your stack, and it stops when you say so.
The hours go where the roadmap says: new features, model fine-tuning and evaluation, refactoring, infrastructure and API cost optimisation. Critical issues get same-day attention. Everything else is planned on a weekly call and discussed daily in Slack.
What you get
Four things land on your side.
Weekly planning, daily Slack
One planning call a week; async questions answered the same day.
Model & cost optimisation
Prompt and model evaluation, fine-tuning where it pays, and a monthly look at cloud and API spend.
Same-day emergency support
Production issues are picked up the day they happen. Maintenance and refactoring are part of the hours, not extra.
How it runs
Retainer, week by week.
Plan
Monthly: priorities from your roadmap, sized against the hours.
Ship
Weekly: features and fixes deployed, demoed on the call.
Measure
Model quality, latency and cost reviewed with real usage data.
Adjust
Hours, scope or cadence changed for next month. Or cancelled.
Questions
What people ask before they book.
- Why not just hire an AI engineer?
- A senior hire runs €90K–€120K a year and takes three to six months to find and onboard. The retainer starts at €3,000/mo, starts next week, and covers the full stack — not only the model.
- Is there a minimum term?
- No. It is month to month. Most clients stay because the work is good, not because of a contract.
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