About

Hi, I’m Johann.

I care about building systems people can trust—technically and organizationally.

Landscape photograph by Johann Roux
Greenland · Photo © Johann Roux

I’m a software engineering manager and backend engineer from Lyon, currently based in Berlin.

Over the years I’ve worked across health tech, e-commerce, and venture building—often in environments where reliability and clarity matter as much as speed.

What I optimize for

  • Confidence: predictable delivery, transparent trade-offs, and systems that behave under pressure.
  • Craft: strong defaults, observability, and clean interfaces that make change safe.
  • People: alignment, ownership, and a culture where feedback is frequent and kind.

Working style

I like crisp goals, small feedback loops, and written decision records. I’m at my best when I can partner with product and design early, and when the engineering team has the space to build quality in—not bolt it on later.