Senior Fullstack Developer & AI Systems

CONEXIONHR
📍 Buenos Aires, Autonomous City of Buenos Aires, Argentina 💼 Full-time 🕒 Posted February 25, 2026

Job Description

We are seeking a Senior Software Engineer to architect and scale our platform-level agentic AI systems. This role combines full-stack engineering excellence with deep expertise in LLM-powered experiences. You’ll design, implement, and optimize core components across frontend, backend, and model integrations, while driving engineering direction in close collaboration with our co-founders. Your work will directly shape the reliability, speed, and cohesion of company’s multi-agent ecosystem.

Key Responsibilities:
● Architect and implement cross-agent systems that power core platform experiences.
● Build and scale full-stack product components using TypeScript/React and Python services.
● Integrate LLMs into production workflows with strong contracts, observability, and test coverage.
● Develop shared UI components and typed SDKs to unify cross-agent experiences.
● Lead engineering direction, collaborating with founders and cross-functional stakeholde...

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Job Details

  • Location Buenos Aires, Autonomous City of Buenos Aires
  • Job Type Full-time
  • Category Other-General
  • Posted Date February 25, 2026
  • Application Deadline April 06, 2026