Job Overview
Location
Paris
Job Type
Full-time
Category
Software Engineering
Date Posted
May 28, 2026
Full Job Description
đź“‹ Description
- • As a Staff Software Engineer (Rust) at Finary SAS, you will design and build high-performance backend services in Rust for a fintech platform serving over 800,000 users, directly contributing to a mission that empowers individual investors with tools to track assets, manage budgets, invest money, and learn about finance.
- • Your day-to-day responsibilities include designing scalable and reliable backend systems using Rust, driving technical direction across teams by shaping architecture and engineering standards, leading complex technical initiatives from design to rollout, collaborating with product and engineering teams to deliver pragmatic solutions, and mentoring engineers to strengthen engineering culture through knowledge sharing and continuous improvement.
- • You will join a team of 10 Rust engineers across multiple product squads (One, Crypto, Life, or others), working in a high-performing environment where ownership, technical freedom, and impact are prioritized, backed by strong investor support including PayPal Ventures and Y Combinator.
- • In this role, you will deepen your expertise in Rust-based distributed systems, influence fintech-grade architecture at scale, mentor peers, and grow as a technical leader while building products that meaningfully improve people’s financial lives.
🎯 Requirements
- • Rust expertise: understanding of Rust's memory safety and concurrency model with production-quality code experience
- • Strong PostgreSQL skills and experience with message queues for resilient systems
- • Ability to architect scalable systems meeting fintech-grade reliability demands
- • English fluency, written and spoken
- • Problem-solving skills to diagnose complex issues and devise effective solutions
- • Team player mindset: humble and committed to helping others grow
🏖️ Benefits
- • Hybrid work setup with in-person weeks in Paris 6 times per year (travel and accommodation covered)
- • High-performing environment with A-players who challenge and support your growth
- • Opportunity to build products that help people take control of their financial future
- • Equity package included with base salary of €80-95K
- • Freedom to make technical decisions and ownership from day one
Skills & Technologies
About Finary SAS
Finary SAS is a French fintech that offers a platform for real-time tracking and analysis of investment portfolios, bank accounts, crypto, real estate, and private equity. The service aggregates data from more than 200 institutions, provides net-worth calculations, performance analytics, and automated document storage, and is available on web and mobile. Users subscribe to freemium or paid plans, with additional features such as family sharing, ESG scoring, and personalized insights. The company was founded in 2020 and is headquartered in Paris, France.
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