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Senior Rust Engineer – Freienbach | JobRevolt

Über den Job

Threema is the world's best-selling secure messenger, trusted by millions of private users and thousands of businesses globally since 2012. We are seeking a Senior Engineer Backend (80-100%) to design and build core services handling message delivery, real-time presence, and end-to-end encryption at scale. You'll join a small team that cares about correctness, performance, and simplicity, writing production code in Rust from day one.

Aufgaben

Design and build backend services in Rust that handle high-throughput, low-latency messaging traffic
Work on core infrastructure: message queues, delivery guarantees, connection handling, and storage layers
Debug and optimize systems under real production load, not just in benchmarks
Review code and mentor other engineers on patterns and systems design
Take ownership of a service end to end, from design through deployment and maintenance

Profil

10+ years of professional software engineering experience, with at least 2 years writing Rust in production
Solid understanding of concurrency, memory management, and systems programming
Experience with distributed systems: network partitions, node failures, queue backups
Comfort working close to the metal (networking, storage engines, protocol design)
Experience building scalable, low-latency, high-throughput systems
Strong communication skills to explain trade-offs to non-technical audiences
Degree in computer science or equivalent experience
Nice to have: async experience (Tokio), messaging protocols/telecom/real-time systems background, open source contributions, encryption or security-critical systems experience

Rahmenbedingungen

Pensum: 80-100%
Start: Immediately or by agreement
Location: Pfäffikon SZ (Greater Zurich Area)
Applications via official "Apply" button only (email applications cannot be considered)

Benefits

Young, motivated team with straightforward communication
Flexible working hours, work from home up to two days per week
Work from anywhere for two weeks per year
Unpaid leave option
Choose your own hardware (macOS or Linux)
Public transportation discount or parking space (electric car charging available)
Free fitness room access, including monthly fitness trainer session
Professional massage once a month
Internal or English language courses
Regular company events and aperitifs
Contribute to privacy protection for millions of people

Senior Rust Engineer

Über den Job

Über den Job

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Rahmenbedingungen

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