Job Description

Proton is seeking a Senior Backend Engineer for the Platform team to architect and build core systems shared by Proton Mail and Calendar. You will focus on performance, cost‑efficiency, and data‑driven delivery while collaborating with product and engineering teams.

You should have hands‑on experience with monitoring and observability tools, strong SQL and data modelling skills, and familiarity with Kubernetes, PHP/Symfony, Rust, or Python. A full‑stack mindset is valued for this role.

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