Backend Engineer (Node.js) – AI x Finance

Backend Engineer (Node.js) – AI-Native Finance Infrastructure

Remote | Contract or Full-Time Node.js • TypeScript • Distributed Systems • AI Integrations About LedgerLabs LedgerLabs is building

LedgersOS — the AI Operating System for Finance. We are developing AI-native ERP infrastructure designed for: Crypto hedge funds Token foundations Digital asset businesses High-growth global startups This is not another SaaS dashboard. We are building financial infrastructure: AI-powered general ledger systems, treasury automation, real-time reconciliation, and intelligent financial agents. Early-stage. Product-led. Execution-focused. The Role We’re looking for a strong Backend Engineer (Node.js) to architect and build the core systems behind LedgersOS. You will work directly with the founder to design and implement: Scalable backend architecture for financial-grade workloads Secure APIs and modular microservices Multi-tenant data models and permissions frameworks Authentication, RBAC, and audit-trail systems AI service orchestration (LLM workflows, automation agents) Real-time data ingestion (wallets, exchanges, external APIs) Financial-grade database schemas (ledger design, transaction models) High-performance, secure, and reliable infrastructure This is a

core systems role

— not feature maintenance. You will be building the foundation layer of an AI-native financial platform. What We’re Looking ForRequired

3+ years production experience with Node.js Strong TypeScript proficiency Experience building and maintaining production APIs Solid database design (PostgreSQL preferred) Experience with REST and/or GraphQL Understanding of backend security best practices Ability to think in systems, not just endpoints Strong Bonus

Experience in fintech, accounting systems, or crypto infrastructure Familiarity with ledgers, financial data models, or reconciliation logic Experience with real-time systems (WebSockets, queues, streaming) Experience integrating AI APIs (OpenAI, Claude, etc.) Cloud infrastructure experience (AWS, GCP, etc.) Experience handling high-integrity financial data What You’ll Get

Direct influence over core product architecture Early-stage equity upside High ownership and autonomy Remote flexibility The opportunity to build infrastructure used by modern finance teams and crypto funds How to Apply Apply with: GitHub profile Links to relevant projects Short note explaining why this problem space interests you