Founding Engineer (Backend)

Who we are

Lysk is a European defence startup. Our mission is to create modern software tailored for hostile environments. Backed by Europe’s leading defence VC, and high-profile angel investors, we’re assembling a world-class team at the intersection of modern software and defence. We do not work on weapons systems or hardware products.

Our founding team includes two early Cloudflare employees and a former GIGN commander (French special forces). We're actively looking for a founding engineer to join us as our first hire and help us reach product-market fit.

What you’ll work on

You’ll work closely with the founders to evolve our early stack and help service our first customers (French and German military units, as well as emergency services).

Initially, your focus will be on bespoke audio streaming tech and real-time voice systems, primarily in Python.

Who we’re looking for

Pragmatic, product-minded, strong execution skills, and a desire to build from zero. You might be especially excited about this if you:

• Have experience with implementing AI systems in resource constrained environments

• Are comfortable diving into audio processing and low-latency systems

• Want your work to have real-world impact, helping those who serve

• Thrive in ambiguous, fast-moving environments

Location & Compensation

• We’re currently hiring in Warsaw 🇵🇱 and Paris 🇫🇷

• We have an in office culture and can sponsor relocation, if required

• Compensation will depend on experience; expected range €60–90K + equity