Senior Backend Engineer

About the Company

Proton was founded in 2014 by scientists from CERN with a mission to make privacy a fundamental human right. We have built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar.

Responsibilities

• Build features across all of Proton's products
• Collaborate closely with products and engineers across the company
• Build scalable software architecture using software engineering best practices
• Optimize user experience and design

Requirements

• Proven experience with back-end development
• Expertise in building scalable, high-performance solutions
• Proficiency with profiling techniques and performance optimization tools
• Experience leading a team initiative from discovery to production
• Strong understanding of SQL (MySQL preferred) and data modeling
• Familiarity with Redis or other caching technologies
• Knowledge of security best practices and secure software implementation
• In-depth understanding of HTTP/REST and web-based APIs
• Solid grasp of cryptographic concepts (key exchange, symmetric/asymmetric encryption)

Preferred Qualifications

• Experience within the payments domain

Benefits

• Meaningful work with measurable impact
• Collaborative environment with high-caliber peers
• Hardware and software provided
• Learning and development investment
• Health coverage and wellness support
• Stock options
• In-person collaboration in global offices
• Daily lunch and snacks
• Transport and bike allowances
• Flexible working hours