ASO Manager

Proton; Greater London; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Work that matters

Great team

Tech environment

Learning & development

Employee benefits

Stock options

In-person collaboration

Food

Transport

Flexible working

Job summary

Proton in London is seeking an experienced ASO Lead to own organic growth across Proton VPN and Proton Mail. You will define strategy, run metadata testing, and drive improvements across Google Play and the App Store.

You will scale localisation across 30+ markets, partner with translators, and collaborate with Design, Growth, and Product to maximise install conversion and international reach. The role offers a hybrid work model with offices in London and other locations, plus a supportive team

Qualifications

• 5+ years in ASO with a proven uplift across iOS and Android.
• Deep knowledge of Google Play and Apple App Store ecosystems.
• Experience scaling ASO across 10+ markets and languages.

Responsibilities

• Own ASO strategy across Google Play and App Store for Proton VPN and Proton Mail.
• Build and scale metadata localisation across 30+ markets with regional translators.
• Drive install conversion rate improvements through structured asset testing with Design.
• Define ASO KPIs and build reporting infrastructure for measurement cadence.
• Identify and prioritise new market opportunities via competitive analysis.
• Align ASO and SEO strategies for a unified organic acquisition funnel.
• Own Proton's ASO tooling stack and ensure scalable workflows.

Skills

ASO strategy

Market localisation

KPI analysis

App Store optimization

Analytics tools

Tools

AppTweak

SensorTower

Mobile Action

AppFollow

Firebase

Job description

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 700+ 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. Check our open-source projects here .

The Organic Acquisition Team

Organic growth is one of Proton's primary acquisition engines — we've scaled to over 100 million users without paid performance marketing as the core driver. The Organic Acquisition team owns SEO, ASO, and content strategy across all Proton products, with a current primary focus on Proton VPN and Proton Mail. We operate across 30+ markets in multiple languages, and the ASO function sits at the intersection of mobile product, design, and web acquisition strategy.

This role is the first dedicated ASO Lead at Proton — meaning you'll be building the function, not inheriting a playbook. You'll work closely with the SEO, Product, Design, and Growth Engineering teams. The right fit is someone who moves quickly, owns results end-to-end, and is energised by the scale and complexity of a multilingual, multi-product environment.

What You'll Do

• Own ASO strategy across Google Play and the Apple App Store for Proton VPN and Proton Mail — from keyword architecture to metadata optimisation to creative testing
• Build and scale metadata localisation across 30+ markets, coordinating with regional translators to improve keyword rankings in priority languages including Korean, Japanese, Portuguese, and German
• Drive install conversion rate improvements through structured creative asset testing — working with Design to iterate on screenshots, app icons, and preview videos based on A/B test results and market-specific insights
• Define ASO KPIs, build the reporting infrastructure, and own the measurement and experimentation cadence across both stores
• Identify and prioritise new market opportunities through competitive analysis, store performance data, and market research — then execute on them
• Align ASO and SEO strategies so that keyword targeting, landing pages, and content campaigns form a unified organic acquisition funnel
• Own Proton's ASO tooling stack — evaluate, implement, and maintain the tools and workflows that enable scalable, multi-product, multilingual execution

Who You Are

• 5+ years of hands-on ASO experience with a documented record of improving app rankings, impressions, and install conversion rates across both iOS and Android
• Deep knowledge of the Google Play and Apple App Store ecosystems — including ranking algorithms, metadata rules, creative asset specifications, and native A/B testing frameworks
• Proven track record scaling ASO across 10+ markets and multiple languages, with experience managing localisation workflows at scale
• Strong analytical skills — comfortable owning KPI definition, measurement, and experiment design using App Store Connect, Google Play Console, Firebase, and/or comparable analytics platforms
• Hands-on experience with dedicated ASO tooling (AppTweak, SensorTower, Mobile Action, AppFollow, or equivalent)

Nice to Have

• Working fluency in Korean, Japanese, Portuguese, or German
• Experience bridging ASO and SEO strategy to build a unified organic acquisition funnel

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.
• A Great Team: Diverse, collaborative, and tight-knit, with people from MIT, Harvard, Stanford, Caltech, Cambridge, ETH, and more.
• Technology: The right hardware and software to do your best work.
• Learning & Development: We invest in your growth. Proton is one of the fastest ways to accelerate your career — real challenges, real ownership, from day one.
• Employee Benefits: Strong health coverage, solid retirement options, generous leave, and wellness support.
• Stock Options: From day one, you have a real stake in what we're building. When Proton wins, you win.
• In-Person Collaboration: Offices across Geneva, Zürich, Barcelona, London, and more. You spend most of your time collaborating face-to-face.
• Food: Lunch and snacks on us every day in the office.
• Transport: We cover public transport, bike allowances, or parking — whichever works for you.
• Flexible Working: You own your schedule. Outcomes matter more than clock-in times.

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.

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 at Proton Technologies AG, 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 and may be retained for future roles.

If we no longer have a legitimate business need to process your information, we will either delete or anonymise it. For questions about your data, contact: [e-mail]

Proton does not accept unsolicited CVs from any sources other than directly from candidates.