Frontend Engineer (Payments)

Barcelona; London; Taipei; Join Proton and build a better internet where privacy is the default At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations. Proton is a profitable company that does not rely upon VC funding, supporting over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online. Hiring at Proton is highly selective, with less than 1% of candidates hired. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. You will have the opportunity work with many of the world's top minds in their fields, ranging from former international math and science olympiad winners to chess champions. We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of.Check ouropen-source projectshere!

The Payments Team

The goal of the Payments team is to enable revenue generation for the entire Proton ecosystem. This comes in the form of introducing new payment methods for users to architecting our client libraries. This team has impact across all of Proton's products and is critical to the success of the business as a whole.

The Payments Team works to continuously expand the possibilities for users to pay with various payment methods, beyond just plain credit cards or Paypal - we aspire to create the best end to end payments experience for users globally
The team works in tight collaboration with the Account Team (responsible for the Proton user lifecycle), the Proton Finance team,and every single Business Unit to ensure that plans,promotionsand pricing meet user expectations -- we arethe most cross-functional team inthe business with direct impact onthe ecosystem strategy

Tech Stack and Tools:

Differently than many other stacks at Proton,the Payments stack depends largely on external services such as payment providers,tax-information providers,currency-conversion providers... As such it is critical,forthe success ofthe service,to build with resilience.
Internally our backend code is in general based on PHP/Symfony,our frontend is based on React,our mobile code is based on Kotlin (on Android) and on Swift (on iOS),with a growing shared codebase in Rust.
All our client-code is open-sourceand GPL3.
We are migrating our infrastructure to Kubernetes.
Everything runs on premise in Proton's data-centers.
To organize our work we use classic tools such as Jiraand Confluence.

Future Plans:

With payments beingthe backbone of any subscription business,we have ambitious plans to expandthe team to cover a wide breadth of topics ranging from demystifying payment performance data across regions/products,to thinking aboutthe holistic strategy of product catalogs,

nd everything in between.or this particular team requires someone who is a strong generalist,who thrives with ambiguity.There's huge potential for growth no matterthe domain,andthe outcome for any candidate is an in-depth view into how money moves globally.

What you will do:

Build features in all of Proton's products.
Close interactions with productsand engineers acrossthe company.
Build scalable software architecture through software engineering best practices.
Optimise user experienceand design.

As a Front-end Engineer at Proton,you will play a crucial role in developing Proton's most vital servicesand serving over 100 million users worldwide.We expect you to be customer-centric,continuously learning,passionate about technologyand usability.You are adept at turning technical complexities into seamless user experiences.Effective teamwork,collaboration with Product,Design,APIs,and your team,and data-driven decision-making are essential aspects of this role.

What you will do:

Develop new features: Developing,deployingand supporting high-quality user experiences,including feature developmentand implementation.
Collaboration: Work closely with backend,product owners,designers,QA,and other engineers to take initiatives from ideation to completion.
Code review and optimization:Conduct code reviews and provide constructive feedback to ensure code quality, maintainability,

and performance optimization.

Testing: Develop and implement comprehensive testing strategies, including unit tests and integration tests,to ensure the reliability of core libraries.
Management: Break down large initiatives into smaller milestones to gather stakeholder feedback quickly,tallowing us to course-correct immediately.

Job Requirements:

Deep understanding of JavaScript methodologies and design patterns
Proficiency with TypeScript or any typed language
Experience with React or 2+ similar frameworks, developing performant and reusable components
Strong understanding of software engineering best practices,such as SOLID , Design Patterns , CI/CD
A product mindset with a focus on offering the best user experiences
Experience working in a distributed team

Bonus points for:

Awareness of common security issues in client-side development,such as those in OWASP top ten , their mitigation methods
Familiarity with UX , accessibility , internationalization , and localization concerns and solutions
Experience with Grafana or other monitoring platforms
Experience with breaking down product requirements into architecture design and implementation
Experience with NodeJS
High-level understanding of cryptography concepts such as key exchange and difference between symmetric and asymmetric encryption

What We Offer:

Office First: Collaboration is easier and more effective in person; offices are located 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 three core days in office.
Technology: We provide all devices/software needed for your role success.
Food: Lunch & snacks provided daily at offices.
Transport: Support via subsidizing public transport/bike allowances/parking spaces depending on office location.
Stock Options: All employees get stock options upon joining.
Flexible Working: Define your own working hours compatible with team meetings.
Learning & Development: Various learning opportunities including training programs/conferences/events/continual learning.
Employee Benefits: Comprehensive health insurance plans; competitive retirement savings options; generous vacation & leave policies; wellness programs.
Work that Matters: Community-first organization started via crowdfunding campaign built with community input; revenue solely from user subscriptions; trusted by over 100 million people prioritizing users & community first.

Our Commitment to Diversity And Inclusion

At Proton we believe diversity drives innovation & strengthens mission providing privacy as default for all. Committed fostering inclusive environment where all individuals regardless race/ethnicity/gender/age/sexual orientation/physical ability/socio-economic background feel valued & empowered. Strive equal opportunities/promote open dialogue/support continuous learning ensuring every voice heard & respected. If you need extra support or reasonable adjustments during hiring process please notify your talent partner.