Développeur·se Frontend Senior / Senior Frontend Engineer

Role Overview

As a Senior Frontend Engineer, you play a key role in designing and building the interfaces of ChapsAgents within the Agentic squad. You develop complex agent-based visualizations and workflows (build, test, execution, monitoring) featuring rich interactions and real-time capabilities, tackling demanding UX, performance, and frontend architecture challenges to make sophisticated agent behaviors clear and seamless for users.

You work closely with your team to analyze, break down, and estimate requirements, proposing elegant and high-performing solutions to advanced technical problems (real-time systems, complex interactions, multiple state management, tool‑calling flows). You design and maintain scalable, well-tested React components within a codebase built for long‑term sustainability, and actively contribute to the Argonos frontend community to evolve shared standards and best practices.

In this role, you operate in an environment where co...