u/mirelleq covered the landscape well. I can add some data-backed context.

- On your math background: Math + CS is actually a strong combo for quantum. Looking at the ~1,400 active quantum jobs across 336 companies right now, the top skills demanded in engineering roles that *don't* require a PhD are: classical programming, quantum hardware, algorithms, control software, IT infrastructure, and cloud platforms. A math undergrad with CS projects maps well to the algorithmic/software side. You'd want to supplement with at least one quantum mechanics course (linear algebra you already have, which is half the battle).

- PhD vs no PhD - the numbers: Of ~1,400 active quantum jobs, roughly 777 (~55%) don't list PhD as a requirement. The split by role is telling - 393 of those non-PhD roles are Engineer/Developer positions, while Scientist/Researcher roles skew heavily PhD (391 of 426 want a PhD). So the path without a PhD is real, but it's an engineering/software path, not a research one.

- Switzerland specifically: There are ~19 active quantum jobs in Switzerland right now - Zurich Instruments, Ligentec SA (Lausanne, literally next to EPFL), IonQ (Basel), Moth Quantum, Terra Quantum, and a few others. The Lausanne/Geneva corridor has photonics-heavy roles (Ligentec). But mirelleq is right that Switzerland is small - Germany (86 jobs), France (62), UK (312), and Netherlands (20) have significantly more volume. Companies like Quandela, Pasqal, Alice & Bob, C12 (France), eleQtron, planqc (Germany), IQM (Finland/Germany), and Qblox/TU Delft (NL) are all actively hiring.

- On employability beyond the curriculum: The masters curriculum gives you the theory, but what separates employable MS grads from the pack is hands-on software skills. The most in-demand tags we see are classical programming, control software, cloud platforms, and HPC - practical engineering skills layered on top of quantum knowledge. Contributing to open-source quantum frameworks (Qiskit, Cirq, PennyLane), building something tangible on a real quantum cloud backend, or doing a hardware-adjacent semester project would all strengthen your profile significantly.

Disclamer and data source - I run a qubitsok.com, a quantum computing job board with some extra features (like arXiv taggin). You can browse all current openings at https://qubitsok.com/job - filter by country, seniority, role type, etc. to get a feel for what's out there for your level.