Electrical / RF Engineer – Bioimpedance Navigation for Cardiac Surgery

Few engineering jobs let you say: I helped make heart surgery better. This is one of them. About us We are a Vienna-based medical-device start-up developing AutoVein - a novel vein-harvesting system for coronary artery bypass grafting, the most common cardiac surgery worldwide. Our goal is ambitious: to improve the standard of care in bypass surgery by making high-quality vein harvesting less invasive, more reproducible, and more accessible. The work is technically demanding, but the impact is very real: better tools for cardiac surgeons, better graft quality, and ultimately better outcomes for patients undergoing one of the most important procedures in cardiovascular medicine. Valeriot is run by engineers and built around technical depth. We combine strong in-house engineering with excellence in regulatory affairs, quality management, clinical affairs, and surgical expertise. Two cardiac surgeons are part of the team, and clinical, regulatory, engineering, and manufacturing questions are not treated as separate worlds - they are developed together. We are now moving from proof of concept toward a regulatory-ready system. A central part of this next phase is bringing more electrical and RF/HF expertise in-house: to challenge external designs, verify prototypes ourselves, develop the impedance-navigation concept, and make sure the complete system behaves reliably in the real surgical environment. Electrical / RF Engineer - Bioimpedance Navigation for Cardiac Surgery Medical Device | Cardiac Surgery | Bioimpedance | RF/HF Electronics | Vienna The role You will join the engineering team as the key person for bioimpedance navigation, RF/HF behavior, and system-level electrical understanding of AutoVein. The most important part of the role is the development of AutoVein's impedance-based navigation concept. We are exploring tetrapolar impedance measurements and EIT-inspired multi-electrode approaches to understand how the device interacts with tissue and to support navigation of the harvester. Your task will be to turn this concept into a practical, testable, and ultimately product-relevant system. A second major part of the role is to strengthen our ability to challenge, verify, and improve the RF/HF electronics developed with external partners. We need someone who can critically review the generator concept, electrode configuration, cable routing, waveform, PCB layout, or prototype result and ask the right questions. You will work closely with the CEO, engineering colleagues, external electronics developers, regulatory and quality experts, manufacturing partners, and cardiac surgeons. We already have engineering and PCB-design capability around the project. Your role is to add depth in impedance measurement, RF/HF behavior, electrode-tissue interaction, prototype characterization, and in-house verification. What you will work on • Develop the impedance-navigation concept for AutoVein, including tetrapolar measurement principles, electrode configurations, signal injection, signal acquisition, and interpretation of impedance changes • Translate EIT-inspired ideas into practical circuits, prototypes, experiments, and design decisions • Develop and validate the impedance-measurement chain, including current injection, voltage acquisition, electrode interfacing, signal quality, SNR, dynamic range, contact impedance effects, stray capacitance, and synchronous detection where appropriate • Build up in-house testing and verification capability for the impedance-navigation system and RF/HF electronics • Characterize RF/HF generator prototypes, including waveform behavior, load dependence, power delivery, switching behavior, and interaction with tissue-equivalent loads • Challenge and review external RF generator designs, schematics, PCB layouts, test results, and technical assumptions • Review the surgical harvester's electrode geometry, routing, materials, insulation, cable paths, and connector concepts from an RF/HF and impedance-measurement perspective • Design and execute structured lab experiments using oscilloscopes, signal generators, impedance analyzers, prototypes, and tissue-equivalent test setups • Document findings, design decisions, test results, and trade-offs clearly enough to support engineering decisions, regulatory documentation, and future production This is a broad technical field, and we do not expect one person to arrive as an expert in every part of it. If you bring strong electrical-engineering judgment, curiosity, and a structured way of solving real hardware problems, we want to talk. What you bring • A degree in Electrical Engineering, Electronics Engineering, Biomedical Engineering, or a comparable field with a strong electrical/electronics focus • Strong understanding of analog circuits, signals, impedance, and high-frequency behavior • Interest in bioimpedance, RF/HF electronics, electrosurgical systems, and medical-device development • Confidence in the lab: measuring, debugging, questioning results, and designing meaningful experiments • The ability to review technical work critically without needing to have designed every component yourself • A practical understanding that real hardware is shaped by parasitics, layout, cables, grounding, shielding, materials, and measurement setup • Clear technical communication and the ability to work closely with engineers, surgeons, regulatory experts, and external development partners • Curiosity, ownership, first-principles thinking, and the desire to build something clinically meaningful What we offer • The chance to do engineering work that can be felt by patients you may never meet, in operating rooms around the world • A technically serious start-up environment run by engineers, with strong clinical, regulatory, quality, and manufacturing expertise around the table • Close collaboration with cardiac surgeons, external electronics experts, regulatory specialists, and the founding team • Real responsibility without being isolated: you will own important technical questions while working inside a capable team • A hands-on culture with short decision paths, high standards, and no corporate overhead • An office in Vienna's 13th district, very close to U4 Hietzing Salary The actual minimum salary is 4,500 EUR gross per month (on a 40-hour basis), the actual salary depends on your qualifications and experience. The salary is paid 14 times per year. About this job Employment type: Full Time (Permanent employment) Salary: from 4,500 EUR monthly Seniority level: Young Professional, Professional Experience Work model: Hybrid Place of work: Wien Field of work: Pharmaceutical, Health, Social, Engineering, Technical Jobs, Science, Research Unfilled vacancies: 1 vacancy unfilled for this position About the company Employer: Valeriot FlexCo Number of employees: 1 - 10 employees Locations: Wien Details about this job Full Time (Permanent employment) • Monday to Friday • 40 hours Place of work • Wien Required languages • English C1 All infos regarding your application Required application documents: • Résumé • Cover letter Contact person Michael Flatscher