Convexity - Founding Engineer (Relocation to San Francisco)

This is an opportunity for an exceptional, deeply technical engineer from Argentina to join as Founding engineer of a fast-growing startup. You'll be the technical co-leader of the company alongside the founders: owning the product's architecture, setting the engineering bar, and building the team and culture from the ground up, with the ownership and upside that comes with a leadership role this early. Convexity serves as the source of truth for inventory and an AI operations manager, automatically converting orders from emails and marketplaces into sales orders and invoices, forecasting demand at the SKU level, and telling teams exactly what to buy and when. Customers can also use Convexity directly through ChatGPT, Claude, or Gemini. The goal: inventory management on autopilot. Interview process: Silver Screening Interview; Silver Technical Interview; Client Resume Review; Client Screening Interview; Client Technical Interview

Responsibilities

Stay deeply hands-on across the whole stack: frontend, backend, data, infrastructure, and AI, owning products end-to-end from the first line of code to production; Own technical architecture and make key product decisions, balancing speed with building systems that scale; Talk directly to customers, understand how distributors operate, and turn their problems into shipped features; Help hire and build the engineering team as the company grows; Work in person with the founders in San Francisco with extreme ownership of technical decisions

Requirements

Very technical with a spiky profile: exceptional depth in at least one area and the potential to grow fast in all of them; Has built ambitious systems from zero; Obsessive about details, loves going deep into hard problems, and cares more about the work than appearances; High-energy, passionate about what they build, and genuinely good-hearted; Strong experience with some of: Python, React, TypeScript, APIs and databases; Based in Argentina and willing to relocate to San Francisco; C1 English level