ProtonMail 質子科技有限公司 work environment photoProtonMail 質子科技有限公司 work environment photo

Job Description

At Proton, we envision an internet where privacy is the default, and we’re building ways to help all people secure their digital lives and take control of their data. ProtonMail was founded in 2014 by a group of scientists who met at the European Organization for Nuclear Research (CERN). And since its inception, the company has grown at a fast pace and today has over 40 million users.

Our principal product, ProtonMail, is the world’s largest secure email service. Our second product, ProtonVPN, is one of the world’s most popular VPN services. Our vision is to build an internet platform for the protection of digital rights, and we are also developing additional products, including ProtonCalendar, ProtonDrive, and more to come.

Proton users include leaders of the Hong Kong protest movement, New York Times journalists, some of the world’s largest corporations, and millions of ordinary citizens from over 180 countries. Our team is diverse and dynamic, representing over 30 different nationalities, with offices in Geneva, Zurich, Prague, Vilnius, Skopje, and Taipei. We're also considering future potential office locations such as London and Barcelona.

What you will do

Contribute to the iOS development effort for existing and future products created by ProtonVPN, ProtonMail, ProtonCalendar, etc. Interact with our existing backend REST APIs and provide feedback based on mobile needs. Work with web, backend, and server teams on building new features. Work with QA/Support team in analyzing and debugging.


Job requirement:

  • Experience in iOS or macOS development.
  • 4+ years of experience in software development with a strong command of OOP.
  • Experience working with RESTful web APIs.
  • Knowledge of Git or other source control.
  • Experience with Swift is a must.
  • Excellent communication and a strong sense of ownership.

Bonus points for:

  • Networking experience on Apple platforms.
  • Well versed in security and with a good understanding of security best practices for mobile development.
  • Leadership experience, with experience of scaling to millions of users.
  • Highly rated apps in App store with a large number of downloads.
  • Bachelor's degree in a relevant field of study and/or scientific background.

Why work at ProtonMail?

  • We work on interesting, challenging problems every day. There is never a dull moment.
  • Our startup culture means everyone’s opinion matters. You can have a significant impact.
  • Our rapid growth means there are many opportunities for advancement.
  • The chance to do something meaningful. ProtonMail protects dissidents, journalists, and activists. Our work saves lives.
  • Be part of something bigger. Millions of people and businesses around the world have embraced our idea of an Internet where privacy and security are the default. Join the privacy revolution that is changing the world.

Please apply for the role via Looking forward to hearing from you!

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About us

我們是一群想爭取線上公民自由權的科學家、工程師與開發人員。這是我們建立 ProtonMail 的原因,ProtonMail 是一個簡單易用的加密電子郵件服務,並提供內建端對端加密以及許多最新的安全功能。我們的目標是要建立一個尊重隱私的網際網路,並能安全地防範網路攻擊。


We are scientists, engineers, and developers drawn together by a shared vision of protecting civil liberties online. This is why we created ProtonMail, an easy to use secure email service with built-in end-to-end encryption and state of the art security features. Our goal is to build an internet that respects privacy and is secure against cyberattacks. We are committed to developing and widely distributing the tools necessary to protect your data online. Our team combines deep mathematical and technical knowledge from the world's top research institutions with expertise in building easy to use user interfaces. Together, we are building the encrypted communication technologies of the future.


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