Senior Backend Engineer - Platform & Performance (Data-Driven)

Proton AG; Paris; Sur place; EUR 54 000 - 83 000; Plein temps

Avantages offerts par ce poste

Stock Options

Technology

Learning & Development

Employee Benefits

In-Person Collaboration

Lunch & Snacks

Transport Coverage

Flexible Schedule

Résumé du poste

Proton Technologies AG in Paris is seeking a Senior Backend Engineer for the Platform team. You will design and build core systems shared by Proton Mail and Calendar, focusing on scale and cost-efficiency while working with cross-functional teams.

You will improve performance, implement data-driven delivery, and collaborate with backend and client engineers to ship reliable, high-quality software. Experience with Kubernetes, PHP/Symfony, Rust or Python is valued and full-stack capabilities are a

Qualifications

• Experience designing scalable backend systems for large user bases.
• Ability to improve performance and reduce costs in production.
• Hands-on with monitoring/observability tools and data-driven decisions.
• Solid SQL skills and data modeling knowledge.

Responsabilités

• Architect and develop core systems shared by Proton Mail and Calendar.
• Improve performance and drive cost-reduction across platform components.
• Apply a data-driven approach to planning and delivery.
• Collaborate with backend and client engineers to ensure quality.
• Develop comprehensive testing strategies for reliability.

Connaissances

Backend development

Performance optimization

Monitoring & observability

SQL & data modeling

Lead initiative

Client-server sync

Kubernetes

PHP/Symfony

Rust

Python

Full-stack

Outils

Grafana

OpenTelemetry

Description du poste

Proton Technologies AG in Paris is seeking a Senior Backend Engineer for the Platform team. You will design and build core systems shared by Proton Mail and Calendar, focusing on scale and cost-efficiency while working with cross-functional teams.

You will improve performance, implement data-driven delivery, and collaborate with backend and client engineers to ship reliable, high-quality software. Experience with Kubernetes, PHP/Symfony, Rust or Python is valued and full-stack capabilities are a