Geneva; Taipei; Paris Hybrid

Proton is hiring a Frontend Engineer (Lumo)

Responsibilities

  • Turn UI mockups into production-ready React components.
  • Integrate those components with our backend services using TypeScript and modern data-fetching patterns.
  • Optimize performance so pages load instantly even on slower connections.
  • Collaborate closely with product managers, designers and other engineers to ship features end to end.
  • Own the quality of your work: write tests, document decisions and participate in code reviews.
  • Spot friction in the user journey and fix it before it becomes a complaint.

Requirements

  • Strong expertise in React.
  • Solid grasp of TypeScript and JavaScript fundamentals.
  • Experience with state-management and data-fetching libraries.
  • Ability to produce clean, maintainable code without cutting corners.
  • Good communication skills and a willingness to give and receive honest feedback.
  • A proactive attitude – you identify problems and solve them, not wait for direction.

Nice to Have

  • Exposure to AI or large language model products.
  • Python scripting for tooling or data tasks.
  • Knowledge of distributed systems and observability stacks.
  • Hands-on experience with design tools such as Figma.
Required Skills
React.jsDistributed Systems
About company
Proton

Proton is a privacy-focused technology company that provides end-to-end encrypted services to protect users' digital lives. Founded to empower individuals with privacy and freedom online, Proton offers a suite of secure products including email, calendar, VPN, cloud storage, password management, and video conferencing.

Used by over 100 million people and organizations, Proton’s services are built on a foundation of zero-access encryption, open-source code, and independent security audits. The company is committed to transparency, community-driven development, and defending digital rights globally.

Headquartered in Switzerland, Proton operates under one of the world’s strongest privacy laws and is structured as a non-profit foundation to ensure its mission remains user-first.

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Job Details
Department Lumo AI team
Category frontend
Posted a month ago