Senior Backend Web Developer - Client Facing Platform EMEA (F/M/D)

Flowdesk's mission is to build a global financial institution for digital assets, one designed from the ground up for market integrity and efficiency.

To achieve this in a rapidly evolving market, we apply a disciplined, first-principles approach to everything we do. This approach is embedded in our core services, from institutional liquidity provision, trading solutions, OTC execution to our comprehensive treasury management offerings. This is how we cut through the noise and build robust and scalable systems across all our business lines.

We seek individuals who are driven by this systematic approach. Joining Flowdesk means you will be a key contributor in building and scaling a more transparent and efficient financial markets infrastructure.

At Flowdesk, our client platform is the front door to everything we do. It’s how institutional clients access trading, settlement, and reporting with confidence. We’re looking for a senior backend engineer who can own this platform end-to-end from the API layer to the workflows our clients depend on every day.

This is a hands-on role. You’ll design and build backend services in Rust, and you’ll set the direction for a small team of backend and fullstack engineers. Together, you’ll deliver a product that is fast, reliable, and safe for clients.  Security and correctness aren’t add-ons here - they’re the foundation of our business.

What you’ll do

• Take technical ownership of the client-facing platform - design, delivery, and continuous improvement.
• Lead and mentor a small team, keeping the bar high on code quality and secure engineering practices.
• Work directly with product managers and frontend engineers to turn client needs into seamless, end-to-end workflows.
• Build and evolve APIs in Rust, with security and clarity at their core.
• Ensure everything shipped follows best practices (OWASP Top 10, SQL safety, authentication/permissions).
• Keep close to the product - think about features not just as code, but as tools our clients use to trade with confidence.