Senior Systems Engineer (100%)

entoothiast ag; Zürich; On-site; CHF 140,000 - 210,000; Full time

Job summary

entoothiast ag in Zürich is seeking a hands-on senior engineer to own the electronics and system architecture of a wearable lactate sensing platform. You will lead technical development from concept through industrialization in a fast-growing, interdisciplinary team.

The role requires leading multidisciplinary projects, experience with regulated MedTech environments, and a proactive, autonomous work style. Swiss work permit or citizenship is required.

Qualifications

• Systems engineering mindset with ability to translate user needs into testable requirements.
• Experience in regulated MedTech environments is a strong plus.
• Proven track record leading multidisciplinary product development from prototype to production.

Responsibilities

• Own and evolve end-to-end system architecture across sensing, electronics, firmware and data.
• Lead product development projects from concept through industrialization, balancing scope and timeline.
• Drive alignment with internal teams, suppliers and pilot customers.
• Define verification/validation strategy to ensure performance, reliability and quality.
• Maintain design and change documentation throughout the lifecycle.
• Lead technical reviews and foster hands-on engineering culture.

Skills

Systems engineering

Requirements engineering

Uncertainty quantification

Quality control

Cross-functional leadership

Autonomy

Education

Electronics engineering or Mechatronics degree

Job description

We are looking for a hands-on senior engineer to own the electronics and system architecture of our sensing platform and lead technical development projects from concept through industrialization.

Start Date: 01/01/2027

Who We Are & What We Are Doing

We’re building the first wearable sensor that continuously and non-invasively measures lactate in saliva. This hasn’t been technically possible until now. We believe it unlocks a new class of insight into exercise control and recovery, turning lactate into a real-time signal instead of a lab artifact.

Our wearable sensor has the potential to transform sports performance optimization, enabling athletes to achieve peak performance in every session will result in more successful competitions and medals won. We have developed a functional prototype, and we are currently building our first commercial product.

The company is growing fast and we are looking for several people to join our incredible team in Zürich.

Responsibilities

• Own and evolve the end-to-end system architecture, requirements and interfaces across sensing, electronics, firmware, mechanics and data.
• Lead product development projects from concept through industrialization, balancing scope, timelines, budget, quality, risks and technical trade-offs.
• Drive alignment across internal specialists, external development partners, suppliers and pilot customers.
• Define and execute a risk-based verification and validation strategy to ensure product performance, reliability and quality.
• Maintain clear and pragmatic design, test and change documentation throughout the development lifecycle.
• Lead technical reviews, resolve cross-functional challenges, drive critical engineering decisions and help establish a strong, hands‑on engineering culture.

Preferred Background

• A degree in electronics engineering, mechatronics or a related field, or equivalent practical experience.
• You have successfully led multidisciplinary product development projects and owned the electronics and system architecture of complex sensing, wearable, health-tech or laboratory products from prototype through production.
• Experience in regulated MedTech environments and insights into quality management and documentation challenges is a strong plus.
• Experience driving complex technical projects, keeping cross-functional teams, suppliers and stakeholders aligned while turning decisions into action.

Must Haves

• Systems engineering judgement: turning user needs into testable requirements, managing interfaces and closing technical risks.
• You have experience with uncertainty quantification and quality control.
• You get things done; you execute fast and with high standards.
• You’re persistent and unblock yourself.
• You communicate clearly and directly.
• You challenge ideas to get to the right answer.
• You operate independently and make informed decisions autonomously.
• Valid Swiss work permit or Swiss citizenship
• Big plus if you’re an endurance athlete or actively care about performance measurement and self-quantification.

You’ll work from our office in the center of Zürich, alongside a small, dynamic, interdisciplinary team that moves fast and argues constructively. We take the work seriously, not ourselves. There’s unlimited coffee and an emotional support dog in the office, because building hard tech is easier when the environment is human.