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Backend Engineer (B2B)
Исключительная вакансия в компании с мировым именем, сильной миссией и отсутствием контроля со стороны венчурных капиталистов. Предлагаются опционы, отличный соцпакет и работа над продуктами, которыми пользуются миллионы.
Сложность вакансии
Высокая сложность обусловлена строгим отбором (топ 1% кандидатов) и необходимостью глубоких знаний PHP/Symfony в сочетании с опытом работы над высоконагруженными B2B продуктами.
Анализ зарплаты
Зарплата в Proton обычно соответствует верхнему квартилю рынка для опытных инженеров, учитывая их селективность. В дополнение к базовой ставке предлагаются опционы, что значительно повышает совокупный доход.
Сопроводительное письмо
I am writing to express my strong interest in the Backend Engineer position within the B2B team at Proton. Having followed Proton’s mission to protect privacy as a fundamental human right, I am inspired by your commitment to building open-source, encrypted tools that serve millions of users globally. My extensive experience in PHP and Symfony, combined with a deep understanding of MySQL and data modeling, aligns perfectly with your tech stack and the challenges of scaling services for over 50,000 organizations.
In my previous roles, I have led complex backend projects and focused on building robust, scalable APIs. I thrive in environments with light hierarchy where impact is prioritized over optics, and I am eager to bring my product engineering mindset to a team that values ownership and technical excellence. The opportunity to contribute to a profitable, independent company that operates at the intersection of high-scale engineering and social impact is exactly the kind of challenge I am looking for.
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Откликнитесь в proton уже сейчас
Присоединяйтесь к элите инженеров Proton и создавайте интернет, где приватность — это стандарт, а не опция.
Описание вакансии
Join Proton and build a better internet where privacy is the default
Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right. Since then, we’ve built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar—tools used by millions globally to protect their freedom, fight censorship, and keep their data safe. In some situations, Proton has literally helped save lives.
We are profitable, independent (no VC control), and selectively hire from the top ~1% of applicants. Our 500+ team members across 50+ countries come from leading organizations and elite academic backgrounds. We move fast, keep hierarchy light, and prioritize impact over optics. If you want to do meaningful work with exceptionally high-caliber people, this is it. Join us and do work you can truly be proud of. Check our open-source projects here!
The B2B Team:
The central B2B team focuses on the priority needs of the 50,000+ businesses, non-profits, and government organizations that use Proton for work: https://proton.me/business. We expect significant growth in B2B users in the coming years across all Proton products. We have built solutions that span multiple products as well as product-specific features. We work closely with product teams and other central teams such as Account and Payments. We are part of a group that is split between Europe and Taiwan and operates 24/7 to ensure reliable service for our users.
Tech Stack and Tools:
- Our frontend is based on React
- Our backend API is based on PHP/Symfony
- All our client-code is open-source and 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 Jira and Confluence
What you will do:
We believe in small empowered teams that focus on delivering large impact. This requires strong engineers with product engineering mindset who can collaborate well, take ownership, and do whatever is needed to achieve our ambitious goals.
What we are looking for:
- Extensive experience as a backend developer, ideally in PHP
- Database and data modeling knowledge (we use MySQL)
- Experience leading large and complex projects as a backend engineer
- Bonus for B2B product experience and infrastructure knowledge
Even if you don’t meet all the requirements listed above, but feel you could still be a great fit, please still apply.
What We Offer
- **Work that Matters:** millions of people trust Proton with their privacy. We answer only to our users — not advertisers, not investors with conflicting agendas, not governments. The work you do here is real, and the impact is measurable. (read more about our impact here)
- **Technology:** you'll get the right hardware and the right software you need to do your best work.
- **Learning & Development:** we invest in your growth because sharp people make us better. Proton is one of the fastest ways to accelerate your career because you'll be thrown into real challenges, with real ownership, from day one.
- **Employee Benefits:** your wellbeing isn't an afterthought. We offer strong health coverage, solid retirement options, generous leave, and wellness support so you can bring your best self to work every day
- **Stock Options:** at Proton, we all have the opportunity to be owners of the company. From day one, you have a real stake in what we're building. When Proton wins, you win.
- **In-Person Collaboration:** Amazing things happen when passionate, smart, and purposeful people get together in the same room. With offices across Geneva, Zürich, Barcelona, London and more, you'll spend most of your time collaborating face-to-face with people who genuinely care about what they're building
- **Food:** Lunch and snacks are on us every day in our offices so you can focus on the work and not on what's for lunch.
- **Transport:**getting to the office shouldn't cost you. We cover public transport, bike allowances, or parking, whichever works for you.
- **Flexible Working:** you own your schedule. Set hours that work for you and your team — because outcomes matter more than when the clock says you started.
Our Commitment to Diversity and Inclusion
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.
Candidate Privacy Notice
When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills.
If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at careers@proton.ch.
Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.
To learn more about our privacy policy, please visitour privacy policy page.
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Навыки
- PHP
- Symfony
- MySQL
- Kubernetes
- React
- Jira
- Confluence
Возможные вопросы на собеседовании
Proton активно использует PHP/Symfony для своего API. Важно понимать уровень владения фреймворком.
Расскажите о наиболее сложной архитектурной задаче, которую вы решали с использованием Symfony. Как вы оптимизировали производительность API?
Компания использует MySQL и работает с огромными объемами данных.
Как вы подходите к проектированию схем баз данных для B2B систем, где требуется строгая изоляция данных и высокая доступность?
Proton переходит на Kubernetes и работает на собственном оборудовании.
Есть ли у вас опыт контейнеризации PHP-приложений и оптимизации их работы в кластерах Kubernetes?
Безопасность — это основа Proton. Инженер должен понимать принципы защиты данных.
Какие практики безопасной разработки (Secure SDLC) вы применяете при написании кода на PHP для предотвращения утечек данных?
Вакансия предполагает лидерство в сложных проектах.
Опишите случай, когда вам приходилось брать на себя полную ответственность за сложный проект от проектирования до деплоя. С какими трудностями вы столкнулись?
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