Tech Lead Full Stack Developer (f/m/x) @ Sii Polska

At least 8 years of software engineering experience, including 3 years in full‑stack roles designing, building, and launching web platforms Strong expertise in modern frontend frameworks (React, Angular, or Vue), including component‑driven architecture, state management, routing, and responsive UI Solid backend experience covering RESTful APIs, microservices, domain‑driven design, scalable architectures, and fault tolerance Proven ability to build platforms and tools from scratch and deliver en…