Electronics and firmware engineer – Medical device development

About RENALYSE

RENALYSE is a technology company dedicated to developing a medical device for the decentralized measurement of potassium and creatinine from a single drop of blood. Our mission is to bring fast and accurate diagnostics closer to the patient, improving quality of life and facilitating clinical monitoring of kidney diseases.

Joining RENALYSE means becoming part of an interdisciplinary team committed to innovation, quality, and real impact in the healthcare sector.

• Develop and implement the electronics for our measurement devices, ensuring compatibility with electrochemical sensors.
• Integrate microfluidic circuitry with measurement systems and ensure the use of compatible components.
• Design, program, and validate the firmware required for system operation.
• Integrate electronic modules with data acquisition, processing, and communication platforms.
• Participate in defining technical requirements and design specifications for both electronics and microfluidics.
• Collaborate with the sensor and software teams to ensure proper data transfer and visualization.
• (Optional/desirable) Contribute to the development or adaptation of software, applications, or web interfaces associated with the device.
• Prepare technical documentation and support product verification and validation activities.

• Bachelor’s or Master’s degree in Electronic Engineering, Biomedical Engineering, Telecommunications Engineering, or related disciplines.
• Experience in electronic system design and firmware programming.
• Knowledge of microcontrollers, analog and digital circuits, and communication protocols.
• Basic understanding of microfluidics and/or integration of electronic systems with fluidic components.
• Familiarity with electronic design tools (Altium or similar).
• Valuable: experience integrating sensors, medical devices, or data acquisition systems.
• Additional experience with software or application development (Python, C#, JavaScript or similar) will be positively considered.
• Ability to work independently and collaboratively within a multidisciplinary team, with strong attention to detail and results orientation.
• Good level of English and proficiency in Catalan and Spanish.

• The opportunity to join an innovative project with high social impact in the field of digital health.
• A dynamic, collaborative, close-knit, and highly technological working environment.
• Permanent contract and competitive conditions according to experience and qualifications.
• Professional development opportunities and growth within the R&D team.

Interested candidates may send their CV to , indicating in the subject line: “Electronics and firmware engineer”.