# Founding Engineer - Backend
**Company:** [DiligenceSquared](https://hotfix.jobs/companies/diligencesquared)
**Location:** New York, NY
**Salary:** $160K-$200K
**Experience:** 3+ years
**Skills:** Python, FastAPI, Django, Postgres, SQL, LLMs, Anthropic, OpenAI, Async Programming, Job Queues, Distributed Systems, Pg_Vector, Supabase
**Posted:** 2025-12-10
> Founding backend engineer architects scalable AI-powered services, agent orchestration, and voice AI pipelines for automated market due diligence platform. Requires 3+ years Python backend, production APIs, LLMs, PostgreSQL, and async systems expertise.
## Job Description
## Responsibilities
- Build new product features and experiences end-to-end, from database models to API endpoints, integrating with UI components for web and AI Voice Agent Application.
- Design and build new AI-powered modules from scratch (e.g., market sizing, competitive analysis) for the 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 to improve the product continuously.

## Qualifications
- **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.
- 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.

## Bonus
- 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.
**Apply:** https://hotfix.jobs/jobs/founding-engineer-backend-at-diligencesquared-2a3d2364-0dd9-4b3d-95af-8fdc1834c40c
**Canonical:** https://hotfix.jobs/jobs/founding-engineer-backend-at-diligencesquared-2a3d2364-0dd9-4b3d-95af-8fdc1834c40c