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
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