I applied online. The process took 3 months. I interviewed at Proton, privacy by default in Apr 2022
Interview
The process is very thorough with a few steps to complete.
- Preliminary HR interview
- Written technical questionnaire
- HR interview
- Technical interview
- Technical exam
- Team meeting
- Final offer.
It can take several months to get an offer, but it's no big deal if you like what you do and your intentions are true.
I applied online. The process took 4 weeks. I interviewed at Proton, privacy by default in Sept 2025
Interview
Interview pipeline took approx 1 month. Initial call with HR, technical discussion with hiring manager, troubleshooting w/ Linux, coding, finally talk with the director. Although coding round was done with a Backend Engineer rather than an SRE, it was still fun. The team is kind and technical interviews allow you to share your experiences and think outside the box. It is evident they apply a healthier SRE culture here. Unfortunately, offer did not meet my expectations - should the circumstances meet in the future, I would definitely join. It seems growing fast with their users expanding and their mission requires applying great engineering at scale. It was great to see team applying their products into interview pipeline also (using proton meet, proton docs for coding etc). Best of luck to Proton and I still believe in their mission!
Interview questions [1]
Question 1
SRE Culture, Incident Response, Monitoring and Alerting, Text book ("tell me about a time when ... " questions from Director), Linux & Networking A-Z.
