Evgenii Vagurov
Twenty years building real-time video and streaming platforms that just work.
Quollo AI — structured interview platform
A B2B SaaS platform that helps European hiring teams run structured interviews, capture insights automatically via AI, and stay compliant with GDPR and the EU AI Act.
quollo.aiSole engineer, end-to-end — product design, frontend, backend, AI pipeline, infrastructure, and deployment.
Agentic workflows for interview-plan generation, real-time follow-up suggestions, and post-interview AI reports.
Video, recording & Q&A-to-timeline mapping — reusing deep WebRTC and video-pipeline experience in a new domain.
Where I’ve built things
Own end-to-end design and implementation of the video recording subsystem on a platform serving thousands of active users. Built the shared UI kit and design system from scratch; drive improvements across the recording, processing, and storage pipeline on both backend and frontend.
Delivered features across three consumer-facing video streaming applications used by a mass-market audience, working across both web and mobile clients — from streaming playback to user-facing controls.
Founded and grew the frontend department from zero to 6–10 engineers delivering 3–5 projects in parallel. Owned hiring, onboarding, reviews, and growth plans; established the standards, tooling, and review practices used across all projects.
Designed the architecture for a webinar system supporting hundreds of concurrent participants per room — WebRTC DataChannel for P2P video distribution with MPEG-DASH fallback. Built the MVP single-handedly, then led an engineering team of 5–8 as technical owner.
Built hybinar.ru from scratch end-to-end: Node.js + MongoDB server, NW.js desktop client, and web client. Managed the team and owned all major technical decisions. Earlier, shipped cross-platform desktop apps with Python, WebKit, and gStreamer.
Founded and ran a web development agency — client work, project management, and end-to-end delivery.