Flowdesk

Backend Engineer

• **Design and build competitive trading APIs**
• - Architect and implement public trading APIs (REST, WebSocket, and FIX) in Rust.
• - Ensure low-latency, high-throughput access to trading workflows (orders, balances, positions, executions).
• **Own the API lifecycle end-to-end**
• - Define and maintain OpenAPI specifications and other interface contracts.
• - Keep APIs consistent, versioned, and easy to integrate for external clients.
• - Drive clear, accurate, and up-to-date API documentation that external developers actually want to read.
• **Build secure, robust authentication flows**
• - Design and implement authentication and authorization for public trading APIs.
• - Apply best practices around key management, signatures, rate limiting, replay protection, and abuse prevention.
• **Collaborate across trading, product, and engineering**
• - Work closely with internal stakeholders (including Jing and Tony) to understand trading needs and constraints.
• - Translate trading and product requirements into clean API designs and reliable backend flows.
• - Partner with frontend / tooling teams (TypeScript) to ensure smooth end-to-end integration.
• **Raise the bar on reliability and quality**
• - Ensure APIs are observable, well-tested, and resilient under peak load.
• - Contribute to standards, patterns, and tooling for API development across the team.
• - Help review code, mentor teammates, and share best practices in Rust, security, and API design.

Senior Backend Engineer – API Trading