💼 Full-Time Position

Senior Backend Engineer (Payments)

🏢
Proton AG
📍 barcelona, cataluña, Spain
📍
Location
barcelona, Spain
📅
Posted
May 31, 2026
Type
Full-Time
🎯

Full-Time Opportunity: This is a permanent, full-time position with a competitive package and real career growth potential.

Job Description

Payments Team – Overview

Proton's Payments team focuses on enabling revenue generation across the ecosystem by integrating new payment methods and building client libraries. The team has a broad impact across all Proton products and works closely with the Account Team, Finance team, and Business Units to align pricing and promotions with user expectations.

Key Responsibilities

  • Build features in all Proton products.
  • Collaborate closely with product and engineering teams across the company.
  • Design scalable software architectures following best practices.
  • Optimize user experience and design.
  • Develop and maintain back‑end services in PHP/Symfony and collaborate on front‑end (React), mobile (Kotlin/Swift), and shared Rust code.
  • Ensure resilience and performance using profiling techniques, caching technologies such as Redis, and security best practices.
  • Lead initiatives from discovery to produ...