Engineer - Backend

DiligenceSquared is an AI-native consulting firm delivering investment-grade market research and commercial due diligence powered by AI agents and experienced consultants. The Backend Software Engineer will develop an AI-powered market due diligence platform, including autonomous research agents, voice AI pipelines, scalable backend services, and end-to-end product features.

Tags

Big Data

Artificial Intelligence (AI)

Information Technology

Analytics

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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)

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

Obsess over system design and think deeply about technical trade-offs

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

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

San Francisco, California, USA

https://www.diligencesquared.com

Total Funding

$5.5M

Key Investors

Relentless

Y Combinator

2026-03-05

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, 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

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

Obsess over system design and think deeply about technical trade-offs

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

Required skills

Represents the skills you have, click on the tags, FastAPI, Django, LLM Agentic Systems, Anthropic Claude API, OpenAI Platform, PostgreSQL, SQL Database Design, Asynchronous Programming, Distributed Systems, Background Task Orchestration

Preferred skills

Experience with Anthropic Claude API and Agent SDK, Familiarity with agent orchestration frameworks, Background in AI/ML systems or voice AI, Previous startup experience, Act with Urgency so we can empower you with Agency, San Francisco, California, USA, https://www.diligencesquared.com, Total Funding, $5.5M, Key Investors, Relentless, Y Combinator, 2026-03-05, Seed· $5M, 2025-11-06, Pre Seed· $0.5M, Leadership Team, Frederik Hansen, Co-Founder & CEO, Soren Knudsen, Recent News, thesaasnews.com, DiligenceSquared Raises $5M Seed Round, 2026-03-09, PR Newswire, 2026-03-06, Company data provided by, AI Tools, Customize Your Resume, Maximize your interview chances

Experience

3+ years