CRO Specialist

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 today supports 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. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. Proton has become profitable and reached scale without relying upon VC funding, largely due to superior talent that allows us to do things faster, more creatively, and more efficiently.

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 our social media pages to learn more about us: Twitter, Reddit, Instagram.

 

Role overview

We are looking for a CRO (Conversion Rate Optimisation) Specialist to support Proton’s Marketing team in improving conversion across our marketing websites and landing pages, spanning traffic from SEO, performance marketing, affiliates, and partnerships.​
You will help run a steady cadence of experiments and landing-page iterations that improve key funnels such as acquisition, sign-up, and upgrade, ensuring tests are well-scoped, properly measured, and clearly documented.​
You will collaborate closely with Design, Engineering, Product, and Analytics teams plus channel owners, to turn insights into high-quality tests and ship changes that measurably improve user outcomes.​

 

 

What you’ll do

• Be part of end-to-end experiment scoping and preparation by helping write and refine hypotheses, draft experiment briefs, align with the team on primary metrics and key guardrails, and translate requirements into the landing page/page-variant updates needed ahead of launch.
• Work in close alignment with the Data/Analytics team to review funnel performance, understand drop-offs and bottlenecks, and translate insights into prioritized test ideas and clear next actions.
• Coordinate with Product, Engineering, and Analytics to align on measurement needs (events, tracking plans, tagging assumptions, dashboards) so experiment readouts are reliable and consistent.
• Partner with Design, Content, and marketing channel owners to adapt landing page messaging and structure to match traffic intent and channel needs (Organic, Performance Marketing, Affiliates, and Influencers).
• Create, iterate on, and QA landing pages and experiment variants in the page/content publishing workflow, ensuring consistency across devices and key entry points.
• Document experiment outcomes, decisions, and learnings in a structured way so insights compound over time and enable faster iteration across future tests and teams.

 

Job requirements

 

• An experimentation mindset: you are curious, structured, and guided by a user-first mindset, focusing on measurable improvements across acquisition, sign-up, checkout, and upgrade funnels.
• 1 to 3 years of experience in conversion rate optimization and experimentation, with exposure to at least one of the following areas: growth, lifecycle, or performance marketing, and clear examples of measurable conversion impact.
• Ability to translate insights into clear hypotheses, define primary metrics and guardrails, and support A/B tests through launch, QA, and readout.
• Solid analytical foundations: comfortable reviewing funnel performance, spotting drop-offs, and turning results into prioritised next actions with Data/Analytics.
• Tracking and measurement literacy: able to align with Product and Engineering on events, tagging assumptions, and dashboards so results are reliable.
• Hands-on landing page optimisation: build, iterate, and QA pages and variants in a CMS/page builder, with strong attention to detail across devices.
• Strong cross-functional collaboration and documentation: coordinate with Design, Engineering, Product, and channel owners, and document learnings so iteration gets faster.​

What We Offer

• 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. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here.

Check our social media to learn more about Proton: 

LinkedIn ,Reddit ,X, YouTube

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.

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