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About the Role We're building a production-grade centralized crypto exchange. You'll work across a TypeScript + Rust monorepo powering wallets, trading, ledger, and blockchain integrations. What You'll Work On JWT, 2FA (TOTP), WebAuthn, Google OAuth Custodial multi-chain wallets (EVM, BTC, SOL, TRON), deposit/withdrawal processing Double-entry accounting, balance consistency (gRPC + HTTP) Order lifecycle, Kafka event flows, gRPC to matching engine Rust-based, high-performance (Tokio, Tonic gRPC, Prometheus) Escrow, disputes, BullMQ job queues API gateway, notifications (Firebase/Twilio/SES), admin, helpdesk Required Skills 2+ years backend experience in Node.js / TypeScript PostgreSQL — transactions, isolation levels, query optimization (Prisma ORM) Redis — caching, rate limiting Kafka / AWS SQS — event-driven microservices, idempotency Rust — ownership, async/await, Tokio, Tonic gRPC Blockchain fundamentals — HD wallets (BIP-32/39/44), EVM (ethers.js), deposits/withdrawals Security — JWT, OAuth2, 2FA, secure key management Good to Have Experience on a CEX, wallet platform, or fintech system gRPC service-to-service experience AWS (SQS, S3, SES), Docker, Turborepo Prometheus / Pino / structured observability Stack Node.js · TypeScript · Express · Rust · PostgreSQL · Redis · Kafka · AWS SQS · ethers.js · BullMQ · Docker · Turborepo Competitive compensation based on experience.
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