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

Full-stack Engineer

• Develop and optimize trading infrastructure for OTC execution and settlement.
• Collaborate with traders, quants, and cross-functional teams to implement trading strategies and workflows.
• Build scalable APIs and microservices for trade lifecycle management, pricing, and risk systems.
• Design resilient solutions for clearing, settlement, and regulatory compliance Required.

Senior Software Engineer, OTC

• 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 look for 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.
• We are seeking Software Engineer with extensive experience in OTC trading to join us. You will design, develop, and maintain high-performance trading systems that power our OTC operations.

OTC Software Engineer – EMEA

Operations

• 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.
• As **Technical Operaitons Lead, **you'll drive operational execution across Engineering, Infrastructure, IT, and Cybersecurity. This is a delivery-focused role: turning ambiguous needs into clear plans, aligning stakeholders, managing vendors/procurement, and ensuring cross-organization integrations ship on time and to the expected quality bar.
• This role requires technical competence (e.g., basic scripting, observability tools, ticketing/work tracking), but the primary driver is ownership, coordination, and operational excellence.

Technical Operations Lead

QA Engineer

• **Your mission will be to**
• - Execute manual testing strategies and systematically identify, document, and report bugs or inconsistencies.
• - Actively participate in the definition and challenge of specifications, identifying edge cases and alternative user journeys.
• - Automate test cases using Typescript and contribute to maintaining and improving our automated testing suite.
• - Collaborate using GitHub for version control and code reviews.
• - Leverage curiosity and technology affinity to propose new tools or methods for improving quality assurance and testing efficiency.
• - Explore the use of AI tools for test generation or scenario discovery.
• - Contribute to a culture of excellence and rigor, ensuring newly released features are thoroughly validated before going live.

Senior Backend Engineer – API Trading

Senior Software Engineer, OTC

OTC Software Engineer – EMEA

Technical Operations Lead

Junior QA Engineer, EMEA