Optical Engineer Intern (PAR+)

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Optical Engineer Intern (PAR+)

ou will help verify our greenhouse coating performance and optimize coating process parameters. You understand the relevance of both optical theories and coating characterization. Your recipe will be used in creating a functional and scalable solution to increase greenhouses’ yield by 7.5%.

Full-time · Delft

Join today, shape tomorrow.

This is just the beginning and we want you to be a part of it.

We are a technology company from Delft, engineering coating, solar and sensor solutions for the global energy transition. Across all these solutions, we consistently aim to change the perspective on how current materials are used and implemented, as well as challenging the system innovation behind them.

PAR+ is on a mission to increase yield inside greenhouses in a sustainable manner with a revolutionary coating. This past year, we have executed our first two pilots and achieved positive results on crop quality and crop growth. By converting UV light to photosynthetic active radiation (PAR) as well as altering the light entry condition, we can increase the yield of a greenhouse by as much as 7.5% annually. We use computer simulation to improve our design parameters where maximized crop yield can be reached. To verify the input from computer simulation, you will be helping us bridge the simulation to actual coating deposition and characterization with our Optics Engineer and Chemical Engineer.

What you’ll be doing?

  • Conduct experiments aimed at characterizing optical properties of our wet coatings.
  • Help us build new optical characterization tools
  • Help design 3-D models based on raytracing for our next optical characterization tools.

Who we’re looking for:

  • You are approaching the end of a Bachelor’s or Master’s degree in a technical oriented education,
  • such as (but not limited to) physics, applied physics, and optical engineering.
  • You have experience with optical simulation and characterization
  • You can work in a diverse team with multiple backgrounds
  • You have a self-starting mentality and like to explore ways to improve
  • You understand (or are eager to learn) wet coating optics
  • You are fluent with English (both written and spoken)
  • Experience with ray tracing software and/or python is a plus

What you can expect? 

  • Be part of a growing organization, with the mission to positively contribute towards the world's food security and for a healthier planet. 
  • Focus on your personal development. 
  • We care for your wellbeing. From Monday bootcamp sessions with the team to unlimited consults at OpenUp platform to support you in your mental health. 
  • A diverse and inclusive environment, with 12 different nationalities, where you can express your opinion and share new ideas. 

Want to apply? Please do so via the link below. Send us your CV and share something extra about yourself and the reasons you want to change the perspective with PHYSEE. 

Our Core Values

Each PHYSEEonair brings unique mentalities, customs and skillsets to the table, but we're binded by these values. They reflect what we stand for as a company and how we conduct our business on a day-to-day basis. We are proud to have a group of 45 curious, ambitious, quirky and adventurous PHYSEEonairs and that these values continue to drive our growth. 

My motivation to work at PHYSEE has been the people from the start until today. Focusing on first the who and then the what is in my opinion the key formula to success.” 

Sadiq van Overbeek,  Co-founder PAR+


You're part of a young and fast growing company wanting to change the world’s perspective of a sustainable future. Your work matters at PHYSEE. Your colleagues are funny, creative and supportive! With different nationalities, deep passion and energy, PHYSEEonairs make work exciting. Work-life balance -or in our lingo: "Plan it Happy"- is key.

Plenty of benefits. Healthy and free lunch. Budget for external career trainings. Covered travel costs. Monthly reimbursements of technical equipment.

Flexibility and responsibility. As long as you make our mission your mission, you are given the freedom to decide how to achieve your best potential. 

We are healthy. We love sports. We stay active with weekly PHYSEEo (bootcamp), PHYoga, PHYSki trip and fresh fruit every single day. 

Open knowledge sharing in a creative way. Every Friday we host interdepartmental brainstorms and have daily '4 O'clock' breaks to give your mind a break while learning about new topics. 


Willem Kesteloo

Co -Founder PHYSEE & CEO PHYSEE Coatings

Sadiq van Overbeek

CPO Coatings & Co-founder PAR+

Joe Kao

Technology and Operations Manager

Chiara Battaglia

Chemical Engineer

Giacomo Bosco

Optics Engineer