Description
The Fullstack Developer is responsible for designing, developing, and optimizing AI-driven co-pilot agents and related collaboration tools. This role focuses on building scalable backend services using C# .NET and creating intuitive frontend experiences with React, while supporting two high-impact engineering teams simultaneously.
Working closely with cross-functional stakeholders, the developer contributes to both the creation of new co-pilot capabilities and the finalization of existing AI agents to ensure production readiness and successful delivery. Success in this role means delivering reliable, scalable, and user-focused AI solutions while demonstrating strong ownership, adaptability, and technical leadership across multiple workstreams.

Responsibilities
● Develop and maintain backend services using C# .NET to support co-pilot agent logic, integrations, and workflows.
● Build responsive and user-friendly frontend interfaces using React for AI-driven collaboration and planning tools.
● Collaborate across multiple teams to align technical approaches and delivery goals.




● Support the deployment and finalization of co-pilot agents, ensuring production readiness and functional completeness.
● Design, implement, and optimize RESTful APIs connecting AI agents with internal systems and third-party services.
● Identify and mitigate technical risks related to AI feature feasibility, scalability, and performance.
● Participate in technical discovery sessions and contribute to DVF (Desirability, Viability, Feasibility) evaluations for new features.
● Contribute to the technical design and continuous improvement of AI-enabled solutions within the broader ecosystem.

Requirements
● 5+ years of experience in software development with strong expertise in C# .NET and React.
● Proven experience as a Fullstack Developer working on enterprise or complex software solutions.
● Experience building or integrating AI-driven agents, co-pilot tools, or chat-based AI systems

📌 Sr Fullstack Developer (Argentina)
🏢 Nybble Group
📍 Argentina