16 days ago
Paris, France or London, United KingdomSenior
Responsibilities
- Design and build shared libraries, framework layers, and internal services used across Proton products.
- Develop API-related functionality in PHP and performance- or memory-safety-sensitive components and microservices in Rust.
- Own libraries and initiatives end to end, including design, implementation, documentation, versioning, adoption, and migration paths.
- Create reusable abstractions from recurring patterns and improve build times, local development, test ergonomics, debuggability, and developer experience.
- Define and enforce healthy module boundaries, dependency direction, and monorepo architecture through RFCs, rules, and code changes.
- Collaborate with product teams through design reviews, integration work, and pull requests to drive seamless adoption of shared components.
Requirements
- At least five years of experience building and operating production backend systems, with a focus on modern PHP.
- Working knowledge of Rust or clear evidence of being able to learn it quickly, including understanding ownership and lifetimes.
- Strong judgment in API design, including naming, defaults, error handling, and library-versus-service boundaries.
- Experience working with architecture at codebase scale, including module boundaries, dependency direction, and monorepo health.
- Experience evolving shared code used by other teams without breaking existing consumers.
- A security-minded approach to designing abstractions and anticipating misuse.
- Ability to influence adoption of internal libraries and carry designs through cross-team disagreements.
- Preferred experience with Domain-Driven Design or complex domain modeling, developer tooling, platform or developer-experience teams, open-source libraries, incremental architecture or language migrations, applied cryptography, key management, end-to-end encryption, or CI/CD.
Benefits
- Meaningful work protecting the privacy of millions of users.
- Collaborative, diverse teams and opportunities for significant ownership and learning.
- Hardware and software needed to do the job.
- Health coverage, retirement options, generous leave, and wellness support.
- Stock options and company ownership opportunities.
- Primarily in-person collaboration at offices including Geneva, Zürich, and Barcelona, with the posting marked onsite.
- Company-provided lunch and snacks at offices.
- Public transport, bike allowances, or parking support.
- Flexible working hours and schedule ownership.
