Senior Full Stack Engineer, AI-First (Go / React)

Description: Build cloud CPaaS/CCaaS infrastructure for contact centers with high traffic and real-time services. Own features end-to-end across Go backend and React/TypeScript frontend, utilizing AI agents in development. Requirements: 5+ years of professional software engineering experience with strong fundamentals. 4+ years of hands-on production experience with Go. Practical experience with React and/or TypeScript. Experience with high-load and distributed production systems. Proficient in designing, building, and debugging production services and APIs. Familiarity with AI coding tools (e.g., Claude Code, Copilot) beyond simple autocomplete. Strong engineering judgment and ability to make independent technical decisions. Benefits: AI-first engineering environment with real production development. Opportunity to work on high-load communication products with significant business impact. Influence technical decisions and architecture as a Senior Engineer. Flexible working format: remote, office-based, or hybrid. Access to mental health programs, comprehensive medical insurance, and sports card (for Bulgaria employees). Free educational events, courses, and English classes with native speakers.