Lisa Keller

Overview

Senior Embedded Engineer at Sable Data, focused on embedded systems. Reduced cloud spend on firmware by 31% in two quarters. Before that: N26 and Microsoft.

Prefers short, specific messages

Experience

1. Senior Embedded Engineer

   Apr 2026 - Present
   Sable Data · 6 mo · Full-time · Zurich, Switzerland
   • Shipped a rewrite that took build times from 27 minutes to under 5.
   • Mentored 14 engineers through their first promotion.
2. Embedded Engineer

   Sep 2024 - Apr 2026
   N26 · 1 yr 7 mo · Full-time · Zurich, Switzerland
   • Moved 73% of firmware traffic off a legacy monolith without a customer-facing incident.
   • Cut p99 latency on the firmware services from 352ms to 99ms.
3. Embedded Engineer

   Jun 2023 - Sep 2024
   Microsoft · 1 yr 3 mo · Full-time · Zurich, Switzerland
   • Cut p99 latency on the firmware services from 675ms to 86ms.
   • Shipped a rewrite that took build times from 29 minutes to under 6.
4. Embedded Engineer

   Apr 2022 - Jun 2023
   Santander · 1 yr 2 mo · Full-time · Zurich, Switzerland
   • Wrote the Bluetooth LE service that now handles 33 million requests a day.
5. Embedded Engineer

   Nov 2020 - Apr 2022
   Just Eat Takeaway · 1 yr 5 mo · Contract · Zurich, Switzerland
   • Cut p99 latency on the firmware services from 739ms to 76ms.
   • Wrote the hardware bring-up service that now handles 54 million requests a day.

No references yet.

Education

1. École Polytechnique

   Ingénieur, Computer Engineering
   2016 - 2020