Senior Backend Engineer - Intents API

Job Role

We're looking for a Senior Backend Engineer (Intents - Order Server) to lead the development and scaling of the core off-chain coordination service. This is a critical infrastructure role, as the Order Server is the central hub that manages the entire Intent lifecycle —from quote aggregation and intent validation to real-time broadcasting and cross-chain status tracking. You will be building a secure, high-throughput system using TypeScript and NestJS that allows applications to discover competitive quotes and protects our Solvers from fraudulent orders, enabling a robust and trustless cross-chain experience. This position is vital for the success of solver-based Intents architecture.

Location

Remote within the EMEA region (Europe, Middle East, Africa). Your application will not be considered if youre outside of this region.

Responsibilities

Your core mission will be to lead the technical direction and implementation of the central off-chain coordination system for our next-generation architecture. This is a critical infrastructure role focused on security, performance, and reliability.

• System Architecture & Development : Design, implement, and maintain the highly available, low-latency APIs required for seamless application interaction, quote management, and system-wide status retrieval using Node.js / TypeScript and the NestJS framework.
• Security & Validation Logic : Develop advanced and rigorous validation mechanisms to ensure data integrity and prevent fraudulent activity within the system, including logic for checking digital signatures, timing constraints, and necessary co-signatures.
• Real-Time Data Distribution : Build and optimize the infrastructure for immediate, real-time broadcasting of critical, validated data to all participating external liquidity providers and execution partners.
• Multi-Phase Status Tracking : Integrate with specialized data indexing services to reliably monitor and track the multi-phase lifecycle of core system objects across distributed environments, ensuring users and applications receive accurate, real-time status updates.
• Optimization of Execution Coordination : Implement advanced logic for data aggregation, caching, and mechanisms for partner reputation and selection to ensure the best possible user experience.
• Security & System Integrity : Proactively identify and resolve potential security vulnerabilities in the off-chain coordination flow to maintain the trustless nature of the overall system.
• Cross-Functional Collaboration : Work closely with the core Smart Contract and Product teams, and ensure comprehensive documentation for the backend architecture and APIs.

Requirements

Nice to haves

Company culture

Embrace your own differences

Own tasks end-to-end

Try - dont be afraid to fail

Take the time to get to know and understand each other better