Convexity - CTO (Relocation to San Francisco)

This is an opportunity for an exceptional, deeply technical engineer from Argentina to join as CTO of a fast-growing startup. The CTO will 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. About Convexity: For distributors and manufacturers, growth often means hiring more people to process orders, manage purchasing, and keep up with emails. 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; Founders Interview

Responsibilities

Own the technical vision and architecture of the platform, balancing shipping fast today with building systems that scale to thousands of distributors; Stay deeply hands-on across the whole stack (frontend, backend, data, infrastructure, and AI), writing code and shipping products end-to-end, especially in the early days; Set the technical roadmap together with the founders and translate business priorities into engineering plans; Talk directly to customers, understand how distributors operate, and turn their problems into shipped features; Hire, lead and mentor the engineering team, defining processes, standards, code quality and culture; Own reliability, security and data integrity for the product

Requirements

Very technical with a spiky profile: exceptional depth in at least one area and strong command across the full stack; Has built ambitious systems from zero and taken them to production with real users; Has experience as a tech lead, founding engineer, or early engineering leader, and has made architecture decisions they had to live with; Has hired engineers or helped build a team, or is excited and ready to do it now; Obsessive about the details, loves going deep into hard problems, and cares more about the work than about 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

Nice to have

Experience with LLMs, integrations, or data-heavy systems