Job Title
Senior Electronics Engineer

Company Description
Cultzyme is a venture-backed deep-tech company in San Sebastián building an intelligent bioreactor platform to turn opaque biological processes into programmable systems. Backed by Nucleus Capital and advised by Merck executives, Cultzyme is giving biomanufacturing its first real nervous system through advanced sensors, AI, and cloud computing.

Job Description
You will lead the hardware electronics cycle for a platform integrating electrochemical, optical, and capacitive sensors to monitor biological processes in real-time. This high‑impact role involves designing low‑signal analog front‑ends and mixed‑signal PCBs, while coordinating firmware across ESP32 and Linux systems. You’ll be the primary architect shaping the hardware for general pharmaceutical manufacturing lines.

Location
San Sebastián, Spain

Why this role is remarkable

Lead the full hardware lifecycle for a platform destined for the world’s most relevant pharmaceutical manufacturing lines, moving from first principles to industrialization.





Work in a high‑talent, ~15‑person team backed by Nucleus Capital and Merck advisors, blending the intellectual honesty of a research lab with startup execution speed.

Access your own dedicated lab and workshop with a budget for specialized equipment, directly impacting the future of biopharmaceuticals and alternative proteins.

Responsibilities

Design low‑signal analog front‑ends and impedance measurement circuits for sensors operating on cell cultures, handling complex electrochemical and amperometric signals.

Lead the full electronics cycle in Altium Designer, including schematic design, multilayer PCB layout, bring‑up, and managing manufacturing with international suppliers.

Coordinate firmware development on ESP32, STM32, and embedded Linux (Raspberry Pi 5) while defining calibration protocols that ensure measurements make biological sense.

Qualifications

Master’s degree in Electrical Engineering w

📌 Senior Electronics Engineer (San Sebastián)
🏢 Jack and Jill
📍 San Sebastián