Senior Backend Engineer - Intents API

5+ years backend development experience building and scaling high-throughput, mission-critical services. Expert proficiency in TypeScript/Node.js with deep working experience using NestJS. Deep understanding of blockchain data and security primitives (EIP-712 signatures, transaction execution flows, on-chain events/logs). Proven experience designing and scaling real-time communication systems (WebSockets, Redis Pub/Sub). Solid experience with relational databases (PostgreSQL) and optimizing complex queries. Strong system design skills, building fault-tolerant and highly available microservices. Experience with monitoring, logging, and observability tools.

Design, implement, and maintain highly available, low-latency APIs. Develop validation mechanisms to ensure data integrity and prevent fraud. Build and optimize infrastructure for real-time data broadcasting. Integrate with data indexing services for multi-phase status tracking. Implement logic for data aggregation, caching, and partner selection. Identify and resolve potential security vulnerabilities. Collaborate with Smart Contract and Product teams, and document backend architecture.