Engineer - Fullstack

DiligenceSquared • New York City, NY

3d

About The Position

We're looking for a Software Engineer with deep expertise in full-stack development to help develop the next-generation AI platform for market due diligence. You'll own complete features end-to-end - from AI-powered backend systems to polished frontend interfaces that investment professionals in Private Equity, Hedge Funds, Private Credit, and Corporate M&A use to make billion-dollar decisions. About DiligenceSquared DiligenceSquared automates commercial due diligence for Private Equity funds. We're YC-backed, just raised a significant Seed round, and our clients include some of the world's largest PE funds. The market is $10B+ annually - PE funds pay McKinsey, BCG, and Bain $500K-$1M per report. Our AI agents do this work faster, cheaper, and with higher accuracy than any human. Our founders bought and sold these reports at Blackstone and BCG where they held senior positions. We have deep experience with the workflows and know exactly what the market needs - and now we're automating it.

Requirements

• 3+ years of professional full-stack development experience
• Strong proficiency in React/TypeScript and Python
• Experience building agentic systems with LLM platforms (Anthropic, OpenAI, or similar)
• Deep hands-on experience with LLMs in production - building reliable agentic systems, not just API calls
• Experience with PostgreSQL and SQL database design
• Experience with modern frontend architecture, state management, and API design
• Track record of shipping user-facing products end-to-end

Nice To Haves

• Experience with Next.js and FastAPI
• Experience with Anthropic Claude API and Agent SDK
• Familiarity with agent orchestration frameworks
• Background building interfaces for AI/ML products or data-intensive applications
• Familiarity with vector databases and semantic search
• Experience with Supabase
• Previous startup experience

Responsibilities

• Build new product features and experiences end-to-end, everything from database models to API endpoints, and integrating them with UI components for our Web App and AI Voice Agent application
• Design and build new AI-powered modules from scratch (e.g., market sizing, competitive analysis) that become core capabilities of our research platform
• Build and own product foundations across the stack (AI agent orchestration, voice AI pipelines, interactive data visualization, app and API performance, intelligent automations)
• Apply learnings from each project into the product, so we're 1% better everyday (Law of Compounding is real. After all, we are founded by investment professionals).

What This Job Offers

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