Engineer - Fullstack

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 DiligenceSquaredDiligenceSquared 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 applicationDesign and build new AI-powered modules from scratch (e.g., market sizing, competitive analysis) that become core capabilities of our research platformBuild 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 experienceStrong proficiency in React/TypeScript and PythonExperience 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 callsExperience with PostgreSQL and SQL database designExperience with modern frontend architecture, state management, and API designTrack record of shipping user-facing products end-to-endBonus:Experience with Next.js and FastAPIExperience with Anthropic Claude API and Agent SDKFamiliarity with agent orchestration frameworksBackground building interfaces for AI/ML products or data-intensive applicationsFamiliarity with vector databases and semantic searchExperience with SupabasePrevious startup experienceWho you are:Love owning complete features rather than just frontend or backend piecesCan context-switch effectively between system design and UI polishTake pride in your code and want to work with others who do the sameAct with Urgency so we can empower you with AgencyPay high attention to detail and are curious about how great products workFeel discomfort when things don't move as fast as you feel they should