Sr. Fullstack Engineer

Ryz Labs
📍 Buenos Aires, Buenos Aires C.F., Argentina 💼 Full-time 🕒 Posted March 03, 2026

Job Description

RYZ Labs is looking for an experienced Sr. Full-stack Engineer to join one of our clients' teams. This role will be pivotal in building features and improving performance in the applications that the customers rely on every day.
This role is needed on a short-term basis (approximately 4-8 weeks) to support an ongoing code rewrite.
Requirements
5+ years of professional work experience as a full-stack engineer
Proficient in React, Python, or Node
Experience working on an engineering team at a startup
Extensive knowledge of modern web development technologies, frameworks, and architecture
Experience using AI tools (e.g., ChatGPT, Claude, GitHub Copilot) to support software development workflows (coding, debugging, documentation, testing, etc.)
Experience integrating AI/LLM-based APIs or services into products is a plus (e.g., OpenAI, Anthropic, other LLM providers)
Ability to reason about AI/LLM limitations (hallucinations, latency, cost, security/privacy) and d...

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Job Details

  • Location Buenos Aires, Buenos Aires C.F.
  • Job Type Full-time
  • Category Other-General
  • Posted Date March 03, 2026
  • Application Deadline April 12, 2026