Software Engineer - Back-End; Storage

Purpose of the role

Storage is at the very center of everything we do. Whatever needs to be persisted eventually uses our Storage infrastructure. For this we run our storage infrastructure predominantly on‑premise in multiple data centres. In this role you will join the Storage Dev team that is responsible for developing and maintaining all the software required in the Storage realm, including Storage APIs, Seaweed & Ceph contributions.

• Be responsible for the operational excellence of the systems/features and their interaction with other systems
• Work closely with a group of Back‑End Engineers and Architects to build resilient, massively scalable solutions for millions of people to rely on
• Collaborate with the SRE teams and other stakeholders to ensure that the Storage back‑end meets critical business and reliability requirements
• Document back‑end capabilities and their proper use
• Create technical designs and implement them to further develop the platform

• Deep experience with Back‑end development (C++, Go, Rust, or PHP)
• Experience building complex production systems
• Experience with profiling methods and tools
• Experience leading a team initiative from discovery to production
• Solid understanding of security best practices
• High‑level understanding of cryptography concepts

• Experience with storage systems (e.g., Ceph, Seaweed or Tape)
• Operational experience such as SRE or on‑call, demonstrating ability to diagnose and troubleshoot complex problems for critical systems

Even if you don’t meet all the requirements listed above, but feel you could still be a great fit, please still apply.

• Office First Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office.
• Technology We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
• Food Lunch and snacks are provided by Proton every day at our offices.
• Transport We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location.
• Stock Options At Proton, we are all owners of the company and you get stock options when you join us.
• Flexible Working You can define your own working hours as long as it works with team meetings.
• Learning and Development We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
• Employee Benefits Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters Proton is a community‑first organization, started with the support of a crowdfunding campaign and built with community input, and we put our users and community first in everything we do. Read more about our impact here.

At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio‑economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.

If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.

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