Founding Backend Engineer

Back End Developer

$120,000 - $250,000 + Market Leading Equity + Benefits + Flexible PTO

New York, NY

Are you an engineer who wants to build and own the core backend systems powering an AI research platform used by top investment and M&A teams, transforming complex data into real-world decision intelligence, whilst benefiting from full autonomy and market leading equity?

This is an excellent opportunity to join a YC-backed, fast-growing AI startup tackling a $10B+ market historically dominated by large consulting firms. The team is building an autonomous research platform that replaces expensive, manual due-diligence workflows with AI agents and voice pipelines that generate fully auditable market and commercial intelligence. Every insight is source-linked, verifiable, and delivered at scales and speeds impossible with traditional consulting models.

You will own the end-to-end development of the platform, building everything from database models and API endpoints to UI integrations for web and AI Voice Agent applications. This includes designing new AI-powered modules, developing core product foundations such as agent orchestration and voice AI pipelines, architecting scalable backend services with async processing and background task workflows, and continuously improving the platform by applying lessons learned from each project.

You’ll report directly to the founding team and operate as a key owner across backend architecture, AI agent orchestration, and production infrastructure. Expect deep technical responsibility, product influence, and the chance to build fundamental systems that will define how institutional research is produced and consumed.

If you want to join a tight-knit, high-caliber team where your code drives product direction and market impact, whilst continuing to rapidly develop your skillset and supercharging your career as the company continues to rapidly scale in revenue and size.

• Build end-to-end product features spanning database models, Python APIs, and integrations with the web and AI Voice Agent applications.
• Design and implement new AI-powered modules such as market sizing and competitive analysis that become core platform capabilities.
• Own product foundations including agent orchestration, voice AI pipelines, intelligent automations, and application/API performance.
• Architect scalable backend services with complex async processing, background task pipelines, and distributed workflows.
• Continuously ship and iterate based on production learnings to improve reliability, performance, and system quality.

• 3+ years of production Python backend experience building APIs with FastAPI, Django, or similar frameworks.
• Hands‑on experience developing LLM‑powered agentic systems using platforms like OpenAI or Anthropic.
• Strong background designing scalable systems with Postgre
  
  SQL, async processing, background jobs, and distributed workflows.
• Comfortable working in a high‑autonomy, feedback‑driven early‑stage startup environment.
• Experience with Claude or agent SDKs, orchestration frameworks, vector databases (), AI/ML or voice AI platforms, Supabase or similar BaaS tools, and prior startup experience.