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DiligenceSquared (YC F25) · 3 hours ago

Founding Engineer - Backend

United States

Full-time

Remote

Mid Level

3+ years exp

DiligenceSquared is a YC-backed company that automates commercial due diligence for Private Equity funds. They are seeking a Founding Software Engineer with deep expertise in backend development to help architect an AI-powered engine for market reports, enhancing the efficiency of investment professionals in Private Equity, Hedge Funds, and Corporate M&A.

AnalyticsArtificial Intelligence (AI)Information Technology

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 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 (AI agent orchestration, voice AI pipelines, app and API performance, intelligent automations)

Architect scalable backend services with complex async processing and background task orchestration

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)

Qualification

PythonProduction APIsLLM platformsPostgreSQLAsync programmingBackground task orchestrationAI/ML systemsVoice AIStartup experience

Required

3+ years of professional Python backend experience

Strong expertise building production APIs (FastAPI, Django, or similar)

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

Understanding of async programming, job queues, and distributed systems

Experience with background task orchestration and async processing workflows

Preferred

Experience with Anthropic Claude API and Agent SDK

Familiarity with agent orchestration frameworks

Background in AI/ML systems or voice AI

Familiarity with vector databases and semantic search (pg_vector, etc.)

Experience with Supabase or similar Backend-as-a-Service platforms

Previous startup experience

Company

DiligenceSquared (YC F25)

At DiligenceSquared, we enable leading investors and corporates to make critical investment decisions with confidence through AI-powered market research and commercial due diligence.

Founded in 2025

San Francisco, California, USA

2-10 employees