Experience

3CX Ltd

Senior Software Developer · Nicosia, Cyprus

May 2022 — Present

3CX is a leading provider of VoIP PBX and unified communications solutions, trusted by 350k+ organizations in 190 countries for secure and reliable business telecommunications.

• Key contributor in the AI team, focused on agentic capabilities for voice and chat. Work spans the full stack — management UIs, agent runtime logic, voice processing pipelines, provider orchestration, evaluation systems, and design system components.
• Implemented fuzzy matching algorithms (Levenshtein distance, phonetic similarity) for contact search to improve lookup accuracy and robustness against speech recognition errors in voice agent interactions.
• Reduced median call-state latency for real-time VoIP/WebRTC calls from ~250ms to ~120ms by re-architecting RxJS event pipelines, synchronizing heterogeneous data sources, and eliminating redundant emissions and memory leaks under high-load conditions.
• Migrated 3CX LiveChat from Vue 2 to Vue 3 — drove adoption to 150k+ active installations via integrations across major CMS and e-commerce platforms.
• Developed integrations with third-party VoIP providers, CRM systems, and AI services (speech transcription).
• Contributed to the WebClient migration from AngularJS to Angular, improving maintainability and system performance.
• Mentored junior developers through code reviews, onboarding, and technical guidance.