Join Proton and help build a better internet where privacy is the default. Proton was founded in 2014 by scientists from CERN, based on the belief that privacy is a fundamental human right. Since then, Proton has developed the world's largest encrypted email service and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar, serving millions globally. Proton is profitable, independent, and hires selectively from the top ~1% of applicants. The team consists of 700+ members across 50+ countries, moving fast with light hierarchy and prioritizing impact.
Tasks
- Own the administration and reliability of Proton's web-scale MySQL fleet, accessed via ProxySQL, including participating in a 24/7 on-call rotation.
- Design and implement automation to eliminate manual operational toil and measurably improve platform reliability.
- Write code and tooling to improve management, monitoring, and scaling of the database platform, treating infrastructure as software.
- Own performance tuning across the full stack—hardware, OS, storage, network, and query level—and resolve bottlenecks before they become incidents.
- Drive database best practices into product design reviews, providing guidance on architecture, data modeling, scalability, and system integration.
- Lead planning and execution of database version upgrades and full stack updates with minimal service disruption.
- Shape Proton's long-term database strategy by evaluating emerging technologies like distributed databases and influencing cross-company engineering standards.
Requirements
- 3+ years of hands-on experience operating highly available MySQL databases at scale in production.
- Deep MySQL expertise: replication, query optimization, indexing, schema design, and performance tuning at the OS and application layers.
- Solid experience with ProxySQL and Linux in production environments.
- Strong automation background, with meaningful reduction of operational toil through scripting or custom tooling (Python, Go, Bash, or equivalent).
- Comfortable with observability stacks (Prometheus, Grafana, or comparable) and using data to diagnose and resolve complex infrastructure issues.
- Experience running databases on bare-metal or on-premise infrastructure (not cloud-managed DB services).
- Hands-on experience with distributed databases such as CockroachDB or YugabyteDB (nice to have).
- Experience with Puppet or comparable configuration management systems (nice to have).
- Prior exposure to high-traffic, multi-tenant ProxySQL deployments (nice to have).
Benefits
- Work that matters: Millions of people trust Proton with their privacy.
- 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: Investment in your growth, real challenges, and 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 Proton is building.
- Salary range: Paris - 50,000€ to 76,000€, with final compensation determined based on qualifications, skills, and previous experience.
- In-person collaboration: Offices across Geneva, Zürich, Barcelona, London, Paris, and more, with up to 30% remote flexibility.
- Food: Lunch and snacks provided every day in the office.
- Transport: Coverage for public transport, bike allowances, or parking.
- Flexible working: You own your schedule; outcomes matter more than clock-in times.
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Über uns
Das Team
The Database team owns the backbone of every Proton product, managing a web-scale fleet of mission-critical MySQL databases serving hundreds of millions of users. The team is part of the Infrastructure department and focuses on availability, performance, and security, emphasizing automation and scalability.