I lead checkout at SCAYLE, working on backend and platform problems inside a commerce platform serving Harrods, Deichmann, and 100+ brands.
My focus is payment-critical reliability, pragmatic architecture, and reducing operational noise so teams can ship fast without creating 3am problems.
13+ years across fullstack engineering, architecture, DevOps, and team leadership
A quick view of the systems I worked on, the scale they ran at, and a few concrete examples of the work behind them.
At SCAYLE, I took ownership of on-call quality for a payment-critical checkout domain.
I focused on alert quality, observability, and the failure paths that were waking people up for the wrong reasons.
The result was a calmer on-call setup with more trustworthy alerts and less operational noise.
Evidence: That work became part of the reason I was promoted into the current lead role.
Checkout had to stay stable through the most demanding commerce event of the year.
I helped prepare and operate the domain around peak traffic, with attention to multi-step state changes, incident response, and runtime behavior under load.
Peak tenants handled roughly 550 orders per minute during Black Friday 2025 with zero downtime in the domain I was responsible for.
Evidence: The site now frames that number as domain impact, not as a blanket claim over the whole business.
anwalt.de needed stronger search capabilities and better foundations for future product work.
I rebuilt search around GraphQL, geolocation, aggregations, and range filters, then stepped into broader team lead and platform work.
That work improved a core marketplace experience and led into architectural, CI/CD, and mentoring responsibilities adopted across the team.
Evidence: It is one of the clearest examples of individual technical ownership that later expanded into leadership scope.
# A quick scan of selected recommendations.
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“Jonas is a doer and one of those developers you really want to have in your company. He is actually a developer, devops,...”
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“It has been my honor to work alongside Jonas for over two years. In this time, I’ve seen him excel as a highly competent...”
“I had the pleasure of working closely with Jonas for almost two years at Anwalt.de. He is a highly talented and dedicate...”
“Jonas was one of the greatest team members I've ever worked with. He has extensive knowledge covering full stack softwar...”
