Software Engineer, Backend (Rust)

About

Tier-1 VC-backed social platform building the next generation of digital friendship

Join an elite engineering team as an early member building a high-velocity social product. You will develop high-performance backend systems in Rust, managing everything from server-side infrastructure to cross-platform logic shared between iOS and Android. This role is perfect for engineers who value technical craftsmanship and rapid mistake-led learning.

Location

Paris, France

Why this role is remarkable

• Work at an intense, high-growth startup backed by world-class tier-1 investors with a pace unseen in the social space for five years.
• Exceptional benefits including 8-9 weeks of annual vacation time and full company shutdowns twice a year to ensure a true recharge.
• Join a deeply international team (17+ nationalities) with comprehensive relocation support, including visa sponsorship, housing assistance, and French lessons.

What You Will Do

• Develop and scale horizontal systems using cutting-edge technologies to handle massive traffic and real-time data synchronization.
• Maintain and evolve a shared Rust component used across iOS and Android to ensure a unified networking and data model layer.
• Collaborate across functions to design and implement creative features and "easter eggs" that prioritize user delight and product art.

The ideal candidate

• Proficient in Rust or low-level systems programming languages like C++, C, or OCaml with a passion for high-performance code.
• Experienced in operating distributed systems in production environments using technologies such as Redpanda, Kafka, ScyllaDB, or Cassandra.
• Driven by a strong product sense for consumer social applications and a desire to take full ownership of technical scopes and analytics.