Engineer - Fullstack

Reposted One Month Ago
New York City, NY, USA
In-Office
160K-200K Annually
Mid level
Artificial Intelligence • Marketing Tech
The Role
The Founding Engineer will develop a full-stack AI platform, owning end-to-end features from backend systems to frontend interfaces, enhancing due diligence processes.
Summary Generated by Built In

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 is the AI-native consulting firm. We deliver investment-grade market research and commercial due diligence, powered by AI agents and led by experienced consultants. Our founding team brings deep experience from Blackstone and BCG, and we're backed by Y Combinator and Relentless. Our clients include 5 of the 10 largest private equity firms in the world and represent more than $3T in combined AUM.

What you will do:

  • 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).

Qualifications:

  • 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

Bonus:

  • 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

Who you are:

  • Love owning complete features rather than just frontend or backend pieces

  • Can context-switch effectively between system design and UI polish

  • Take pride in your code and want to work with others who do the same

  • Act with Urgency so we can empower you with Agency

  • Pay high attention to detail and are curious about how great products work

  • Feel discomfort when things don't move as fast as you feel they should

Skills Required

  • 3+ years of professional full-stack development experience
  • Strong proficiency in React/TypeScript and Python
  • Experience building agentic systems with LLM platforms
  • Deep hands-on experience with LLMs in production
  • Experience with PostgreSQL and SQL database design
  • Track record of shipping user-facing products end-to-end
Am I A Good Fit?
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The Company
HQ: San Francisco, CA
8 Employees
Year Founded: 2025

What We Do

At DiligenceSquared, we enable leading investors and corporates to make critical investment decisions with confidence through AI-powered market research and commercial due diligence. Our platform uses a network of AI agents to conduct expert interviews, synthesize insights, and produce fully auditable reports.

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