Senior CRO Growth Product Manager

Join Proton and build a better internet where privacy is the default 

Proton is one of Europe’s fastest growing scale-ups, serving more than 100 million users around the world. Since the launch of our first service – Proton Mail – in 2014 by scientists who met at CERN, Proton now provides an ecosystem of well-known services such as Proton VPN, Proton Drive (encrypted file storage), Proton Pass (encrypted password manager) and much more.

Our mission is to build a more ethical and responsible alternative to Big Tech services, with a focus on end-to-end encryption, privacy, open-source and ease-of-use. Our user-first approach has helped Proton grow organically to serve millions of consumers and businesses around the world, with users from organisations including The Guardian, The New York Times and the UN. Proton does not have venture capital investors, is profitable and self-sufficient, and today has over 500 employees representing over 50 nationalities. We're headquartered in Geneva, Switzerland, with additional offices in Zurich, London, Paris, Barcelona, Taipei, Skopje, Vilnius and Prague.

As one of Europe's fastest-growing companies, we offer the chance to tackle complex challenges, influence millions and shape a more equitable internet. We want to create more than just one of the world's most impactful tech companies: we want to create a new internet that serves the interests of all people. We need you, your voice, your ideas and your ambition to make it happen.

Role overview

We are looking for a highly skilled Website Conversion Optimisation Expert to lead the strategy and execution of Proton’s website conversion optimisation efforts. This role combines product management, data-driven decision-making and growth marketing to transform Proton’s website into a high-performing, conversion-centric asset. As the Senior CRO Lead, you will drive the optimisation of user journeys and enhance Proton’s product experience, ensuring that we accelerate user acquisition, free sign-ups and paid subscriptions.

You’ll work closely with engineering, design, product, data and business teams to continuously improve website performance, create data-driven roadmaps and launch experiments that drive growth across both our consumer and business-facing websites. Additionally, you will be responsible for optimising the mobile experience, ensuring a seamless experience across all devices and platforms.

What you’ll do

• Create, prioritise and manage a continuous roadmap of web and app store optimisation experiments aimed at increasing conversions, improving user experience (UX) and driving revenue growth (free sign-ups, subscriptions and sales leads)
• Work closely with Engineering, Product, Design, Performance Marketing, SEO and Proton's business units to ensure a seamless user experience that is optimised for conversion across all web and mobile touch-points
• Define and implement growth experiments (e.g. A/B and multivariate tests) to optimise website elements and user flows, prioritising tests based data-driven insights and validating hypotheses to drive conversions and enhance the overall user experience
• Champion improvements to the entire user journey, from ad click-throughs to landing page conversions and sign-ups, working with the Growth, Engineering and Marketing teams to ensure that all touch-points are designed for maximum engagement and conversion
• Collaborate with the Accounts and Payment teams to optimise the end-to-end product onboarding journey, owning the CRO across the full funnel — from initial acquisition to successful subscription and payment
• Ensure that Proton’s website and user journeys are fully optimised for mobile, ensuring responsiveness, ease of navigation and optimal performance on mobile devices, providing a smooth user experience across all screen sizes
• Leverage web analytics, customer feedback, user research and other data to identify conversion bottlenecks, measure growth impacts and inform website optimisation decisions, developing actionable insights that drive the website optimisation roadmap and growth strategy
• Share findings, insights and learnings from experiments and tests with cross-functional teams to encourage a data-driven, iterative culture of continuous improvement
• Define and track key performance indicators (KPIs) for growth, including conversion rates, user engagement, traffic patterns, free sign-ups and paid subscriptions, presenting findings and recommendations to senior leadership to inform website optimisation strategy
• Stay informed about the latest trends in digital marketing, web optimisation, CRO strategies and competitor activities to ensure Proton’s website remains cutting-edge and highly competitive in the market

What you'll bring

• 8-12 years of experience in conversion optimisation, digital marketing and growth-focused roles, preferably in fast-paced tech, SaaS or privacy/security environments
• Extensive hands-on experience with Conversion Rate Optimisation (CRO), A/B testing and multivariate testing, as well as familiarity with popular web analytics tools (e.g. Google Analytics, Mixpanel, Hotjar etc.) and data-driven decision-making
• Experience in growth marketing and strong understanding of the full user lifecycle and how to optimise each touchpoint to drive revenue and engagement
• Proven experience in optimising websites and user journeys for mobile responsiveness and performance, ensuring that all content is seamlessly adapted for mobile devices and mobile-first UX
• Familiarity with both B2C and B2B product environments, particularly in privacy, security or SaaS-based industries
• Strong analytical mindset with the ability to synthesise data, identify trends and make recommendations that improve website performance
• Strong verbal and written communication skills, with the ability to effectively present complex findings and work cross-functionally with different teams
• Passion for privacy, productivity and the future of the open internet, aligning with Proton’s vision and mission to create secure and private digital experiences

What we offer 

• 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 
• Learning & Development: we are committed to your professional growth – Proton offers various learning opportunities, including training programs, conferences/events and continual learning 
• Employee Benefits: comprehensive health insurance plans, competitive retirement savings options, generous vacation/leave policies and wellness programs 
• Stock Options: at Proton, we are all owners of the company and you get stock options when you join us 
• In-Person Collaboration: 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 enjoy working from home for up to 30% of the time, while enjoying great company culture during our three core days in the office (depending on the role, fully remote positions may also be available)
• Food: lunch and snacks are provided by Proton every day at our offices 
• Transport: we'll always support our employees with transport costs through subsidising public transport, bike allowances or parking spaces based on your office location 
• Flexible Working: you can define your own working hours as long as it works with team meetings 
• Work that Matters: Proton is a community-first organisation, 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) 

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 its 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 anonymise 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 CVs 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.