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I am Boris Lazar Varbanov, a Senior Full Stack Engineer with 7+ years of experience architecting scalable web applications, specializing in real-time communications systems and live streaming platforms. I excel at building secure, high-performance platforms and leading cross-functional teams. I enjoy collaborating with UI/UX and product teams, designing scalable architectures, and implementing security practices (SOC 2, GDPR). I thrive on solving hard latency, uptime, and cross-device compatibility challenges to deliver reliable software used by thousands of concurrent users.…I am Boris Lazar Varbanov, a Senior Full Stack Engineer with 7+ years of experience architecting scalable web applications, specializing in real-time communications systems and live streaming platforms. I excel at building secure, high-performance platforms and leading cross-functional teams. I enjoy collaborating with UI/UX and product teams, designing scalable architectures, and implementing security practices (SOC 2, GDPR). I thrive on solving hard latency, uptime, and cross-device compatibility challenges to deliver reliable software used by thousands of concurrent users.

Boris Lazar Varbanov

Full Stack Developer, Front-End Developer, Back-End Developer, +4

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I am Boris Lazar Varbanov, a Senior Full Stack Engineer with 7+ years of experience architecting scalable web applications, specializing in real-time communications systems and live streaming platforms. I excel at building secure, high-performance platforms and leading cross-functional teams. I enjoy collaborating with UI/UX and product teams, designing scalable architectures, and implementing security practices (SOC 2, GDPR). I thrive on solving hard latency, uptime, and cross-device compatibility challenges to deliver reliable software used by thousands of concurrent users.…I am Boris Lazar Varbanov, a Senior Full Stack Engineer with 7+ years of experience architecting scalable web applications, specializing in real-time communications systems and live streaming platforms. I excel at building secure, high-performance platforms and leading cross-functional teams. I enjoy collaborating with UI/UX and product teams, designing scalable architectures, and implementing security practices (SOC 2, GDPR). I thrive on solving hard latency, uptime, and cross-device compatibility challenges to deliver reliable software used by thousands of concurrent users.

Available to hire

I am Boris Lazar Varbanov, a Senior Full Stack Engineer with 7+ years of experience architecting scalable web applications, specializing in real-time communications systems and live streaming platforms. I excel at building secure, high-performance platforms and leading cross-functional teams.

I enjoy collaborating with UI/UX and product teams, designing scalable architectures, and implementing security practices (SOC 2, GDPR). I thrive on solving hard latency, uptime, and cross-device compatibility challenges to deliver reliable software used by thousands of concurrent users.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Bulgarian

Advanced

English

Fluent

Work Experience

Senior Software Engineer at Kigla

June 1, 2025 - Present

Architected React.js and Node.js enhancements for a SaaS web application, built modular UI components and backend APIs, and delivered features with improved delivery speed and platform stability. Drove Docker-based CI/CD pipelines and cloud deployments on AWS/Azure for high-availability SaaS platforms.

Senior Full Stack Engineer at Snotor

July 1, 2023 - May 1, 2025

Developed React.js single-page applications and Node.js microservices for SaaS modules, delivering features that increased user engagement by 35% and supported 30K monthly active users. Implemented CI/CD workflows and containerized services to improve deployment reliability.

Senior Full Stack Engineer at Dreamix

March 1, 2021 - April 1, 2023

Built full-stack features for client SaaS products using React.js and Node.js; delivered 12 major releases over 24 months, boosting client retention and satisfaction. Implemented GraphQL APIs and Postgres-backed data models with migrations and optimized queries.

Frontend Engineer at The Bureau of Small Projects

May 1, 2018 - February 1, 2021

Developed responsive front-end applications with React.js and TypeScript; built reusable UI components used by 15+ projects; integrated REST APIs and GraphQL endpoints to streamline data flow and UI performance.