We are looking for (intern)

Electronic development engineer

To implement our breakthrough diagnostic technology and optimize our laser systems, you will become part of our electronic development team. Besides designing and testing advanced subsystems for light detection and signal processing (analog and digital), including low-noise photodetectors, lock-in amplifiers and PID control loops, you will assist the development of our electronic laser control units. In addition, you will program and optimize firmware for the microcontroller-based control units. You will work closely with our laser, software, and microscope specialists to define technical requirements and perform system testing.

Your responsibilities:

  • Concept development, simulation, and rapid prototyping of analog and digital circuits
  • PCB design, research of components and coordination of production via external providers
  • Ensure product compliance and certification according to industry standards
  • Learn all the details about the existing electronic systems and optimize them
  • Programming of STM32 MCU with C and C++
  • Support production of laser products
  • If desired: tasks in related fields such as service, sales, or PR

Your qualifications:

  • Training or degree in electrical engineering, physics or related fields
  • Knowledge and experience in analog and digital circuit technology
  • Understanding of interfaces and bus systems such as CAN, SPI, I2C, USB, Ethernet 
  • Experience in programming MCU with C and C++
  • Basic knowledge in the use of ECAD systems
  • Good manual skills with soldering station
  • Experience in simulations with LTspice
  • Passion for experimentation

We offer:

As part of Refined, you will have the possibility to shape our ambitious company and to grow with it. By accepting responsibility in various positions, you can find the ideal role for you. We value professional dialog and mentoring – we find solutions to complex problems together, make decisions by consensus, and are open to individual education, e.g., by attending congresses or workshops. Besides our motivation to shape future diagnostics, we share humor and friendship. Regular „Well-Done-Beers“, company retreats and running jokes are examples of our team spirit.

We also offer:

  • Flexible working hours and the possibility to work remote if your tasks allow you to
  • Long-term contract
  • Competitive salary, 30 vacation days plus vacation on new year’s and Christmas‘ eve
  • Training and exciting tasks at the intersection of lasers, microscopy, and AI
  • Free drinks and height-adjustable desks
  • Münster – One of the most livable and bike-friendliest cities of the world
  • Individual benefits, e.g. job bike, sport & fitness courses, payment of daycare fees or company pension plan

Please send your CV to or feel free to contact us if you have any questions.