Fullstack Developer

Manifest OS • New York, NY

1d • $215,000 - $236,000 • Onsite

About The Position

We're building an AI-powered legal tech platform and need a backend-focused fullstack developer who treats AI tools as a core part of how they build — not an afterthought. You'll own features end-to-end across secure client portals and enterprise-grade B2B systems, from architecture to deployment. This is a high-trust, high-autonomy role on a small team where your decisions directly shape the product.

Requirements

• 7+ years shipping fullstack TypeScript in production (React/Next.js and Node.js)
• Proven ability to deliver complete features end-to-end with measurable business outcomes
• Strong PostgreSQL or relational database design skills
• Experience building production APIs with proper error handling, monitoring, and documentation
• Hands-on cloud platform experience (GCP preferred; AWS or Azure acceptable)
• Daily use of AI coding tools for the majority of your development work
• Based in NYC and able to work in-office

Nice To Haves

• Experience at a high-hiring-bar tech company or VC-backed startup (Seed–Series C)
• Shipped a production AI feature: RAG, LLM integration, agents, embeddings, or semantic search
• Currently working at a startup or growth-stage company under 1,000 employees

Responsibilities

• Design and build scalable backend architectures for client and lawyer portals
• Implement AI-powered workflows including document generation, case evaluation, and conversational interfaces
• Build and maintain secure APIs in Node.js/TypeScript for internal and client-facing applications
• Ensure systems meet compliance requirements for legal documents, client data, and financial transactions
• Translate complex legal workflows into intuitive digital experiences alongside stakeholders
• Use AI development tools (Cursor, Copilot, v0) as a primary part of your daily coding workflow
• Own features from conception through deployment with measurable impact on user outcomes

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed