Senior Software Engineer - Python/React (LATAM, Remote)

We're hiring a Senior Software Engineer for an early-stage, US-based AI software company. You'll own large product features end to end, from a loosely defined spec to production, on a small team that ships fast while the product finds its market. This is a full-time, fully remote role on US Pacific hours. What you'll do • Turn large, loosely defined product specs into technical plans, milestones and shipped code • Build across the stack: Python and FastAPI on the backend, React and TypeScript on the frontend • Design data models across BigQuery (SQL) and Firestore (NoSQL) • Push toward higher automation rates for customers, so the product does more of the work for them • Surface issues early, take initiative and own your projects from design through production • Get your engineering plans reviewed and signed off by the team, and bring product questions to leadership • Use AI coding tools in a disciplined workflow, while fully understanding the code you ship • Join the on-call rotation and keep production healthy You may be a fit if • You have senior-level experience owning large, ambiguous scopes from spec to production • You write strong production Python, ideally with FastAPI or Flask, and work comfortably in React and TypeScript • You model data well across relational/analytical and NoSQL databases • You've built systems that grew in users, traffic or data, and you design for scale • You operate autonomously and proactively, raise problems before they grow, and are reliable on deadlines • You use AI tools daily and review their output carefully • You're energized by fast iteration and comfortable when an experiment fails and the plan changes • You're fluent in English and communicate well in writing, in an async-first team • You can work 9 AM to 6 PM US Pacific Time • You're based in Latin America (Mexico and Central America preferred for time zone overlap) Nice to have • Early engineer at a startup that grew significantly while you were there • Founder or founding engineer experience or BigTech experience • Shipped AI features: LLM integrations, chatbots, agents or support automation • Experience with SMB-focused SaaS, payments or commerce What we offer • Full-time, fully remote, long-term role (independent contractor) • Real ownership on a small, senior team with no project managers or process overhead • A flexible day: no time tracking, you're judged on what you ship • Direct work with the company's leadership Originally posted on Himalayas