Job Summary: We are seeking Senior and Principal Software Engineers to design and build scalable solutions for leading global clients. Key Highlights: 1. Challenging and high-impact projects 2. Design of distributed and scalable systems 3. Technical leadership and mentoring Job Description: At **Experis Argentina**, we are looking for top-tier talent to join a challenging project with a global technology company. **Position: Senior \& Principal Software Engineer (Python / Node.js)** Location: Buenos Aires (hybrid mode) Employment relationship with the client Advanced English You will work on high-impact projects, designing and building scalable solutions for industry-leading global clients. **What We Are Looking For?** For **Senior** profiles: * Solid backend development experience with Python (Django) or Node.js * API and microservices development * Proficiency with SQL and NoSQL databases * Experience with CI/CD and software development best practices * Cloud knowledge (AWS, GCP or Azure) For **Principal / Tech Lead** profiles: * Experience leading architectural decisions * Design of distributed and scalable systems * Strong cloud background (GCP \+ Kubernetes preferred) * Technical leadership and mentoring capabilities * End\-to\-end experience (from design to production) **We Value**: * Experience in agile environments * Results-oriented mindset * Use of AI tools for development (Copilot, etc.)