
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!
Purpose of the role
As a Backend Engineer in Marketing Technology you will be responsible for building our key components of our marketing technology stack. You will drive software design and implementation likewise while helping a newly formed cross-functional team. You will interact with key stakeholders in the Business Units, Software Development, Marketing, Sales and more to understand requirements and use cases while keeping the bigger picture in mind.
If you’re a self starter and results-driven backend engineer, and you thrive in a fast-paced environment, this is a great opportunity to play a pivotal role in a fast-growing company. You will have a concrete impact on the future of the business as a whole.
What you will do
Research, plan, scope, evaluate and implement our MarTech stack using Python and PHP
Help and train the engineers of our business units to integrate sdk's we provide
Own MarTech maintenance, including updates, enhancements, security, and privacy of the systems
Help teams identify where technology can help increase conversion, efficiency and user experience
Be a point of contact when it comes to technical solutions in the MarTech space and be the key person when it comes to technical questions about the stack
Job requirements
Demonstrable experience in building high-quality systems
Experience building scalable solutions with Python or PHP
Solid understanding of SQL
Solid understanding of HTTP/REST, including both developing and consuming Web-based APIs
Proven capability in integrating different in-house built systems with off the shelf products
A curious, passionate, and growth-oriented mindset
Strong interpersonal and communication skills. Ability to build strong relationships with cross-functional stakeholders and influence at all levels of the organisation
Proven ability to manage multiple projects and priorities, and deliver high-quality software solutions on time and on budget
Ideally you already had some touchpoints with marketing technology in the past.
What We Offer
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 visit our privacy policy page
#LI-ONSITE

A better internet starts with privacy.
At Proton, we believe that privacy is a human right, the foundation of a free and open society.
That’s why we’re building an ecosystem of privacy-first, open-source tools that put people (not profits) first.
Created by scientists from CERN and MIT, governed by the Proton Foundation (a Swiss non-profit organization) and powered by a global community of supporters, Proton is independent, community-funded, and 100% subscription-based, not driven by ads or data mining.
Our privacy-by-design ecosystem includes:
✉️ Proton Mail: the world’s most private email service, free of ads and trackers
🌐 Proton VPN: a fast, secure VPN to browse freely and protect your identity online
🗓️ Proton Calendar: an encrypted calendar that keeps your schedule private
🗂️ Proton Drive: encrypted cloud storage with secure file sharing and Proton Docs for private document editing
🔑 Proton Pass: a secure password manager with a built in 2FA authenticator for logins, hide-my-email aliases, credit cards, notes, and encrypted files.
🔒 Proton Authenticator: a free, open-source 2FA app that keeps your accounts safe
🤖 Lumo: your privacy-respecting AI assistant, powered by Proton’s secure ecosystem
Trusted by over 100 million people worldwide, from journalists and activists to global NGOs, academics, and creatives, Proton is the trusted alternative to Big Tech.
Headquartered in Switzerland, with offices in Geneva, Zurich, Skopje, Taipei, Vilnius, Barcelona, Paris, and Prague, Proton is home to a growing team of 600+ people across 20+ countries, united by a single mission:
To make privacy the default for everyone. 🔐