Software Engineer at Cisco
Florida, United States
Oleksii Bondar
Council Member
Oleksii Bondar is a Software Engineer with 5+ years of experience specializing in WebRTC and full-stack development, delivering high-performance web applications and real-time video systems across enterprise collaboration, retail, and diverse freelance projects. Based in Miami, Florida, he builds secure, low-latency video solutions and scalable web applications, with deep expertise across the WebRTC stack including SDP/ICE, SFU, simulcast/SVC, and congestion control.
At Cisco (January 2025 - Present), working on Webex, the industry-leading collaboration platform, Oleksii serves as Software Engineer enhancing advanced video conferencing solutions with focus on call quality, reliability, and security.
He profiled end-to-end media latency and tuned congestion-control and buffering strategies to reduce stalls and improve smoothness in real-time calls. He repaired simulcast layer negotiation and fallback, improving visual quality and stability under fluctuating bandwidth and heterogeneous endpoints. He extended signaling handling for real-time events including timeouts, retries, and ordering, increasing message reliability and reducing edge-case failures. He increased automated test coverage for SDP/media-description matching and related edge cases, catching regressions earlier in CI, and simplified test strategy to rely on public APIs, improving maintainability and signal-to-noise in tests. He implemented VDI-aware presence and auto-away flows keeping audio, video, and status in sync across environments, hardened presence/away logic in SDK and web client to ensure consistent state transitions under network churn, and added lightweight telemetry hooks across media flows to improve diagnostics and QoE analytics.
At Circle K (August 2022 - January 2025), he progressed from Junior to Regular Software Engineer over 2.5 years, building multi-functional account management platforms that increased security and usability across internal applications. He cut page load time by approximately 20% via caching and efficient data access, improving user experience at scale. He developed banking integration that contributed approximately 15% revenue uplift with multi-language support, and created a centralized auth module that reduced new-feature integration time by approximately 40% while hardening security.
At Cisco (January 2025 - Present), working on Webex, the industry-leading collaboration platform, Oleksii serves as Software Engineer enhancing advanced video conferencing solutions with focus on call quality, reliability, and security.
He profiled end-to-end media latency and tuned congestion-control and buffering strategies to reduce stalls and improve smoothness in real-time calls. He repaired simulcast layer negotiation and fallback, improving visual quality and stability under fluctuating bandwidth and heterogeneous endpoints. He extended signaling handling for real-time events including timeouts, retries, and ordering, increasing message reliability and reducing edge-case failures. He increased automated test coverage for SDP/media-description matching and related edge cases, catching regressions earlier in CI, and simplified test strategy to rely on public APIs, improving maintainability and signal-to-noise in tests. He implemented VDI-aware presence and auto-away flows keeping audio, video, and status in sync across environments, hardened presence/away logic in SDK and web client to ensure consistent state transitions under network churn, and added lightweight telemetry hooks across media flows to improve diagnostics and QoE analytics.
At Circle K (August 2022 - January 2025), he progressed from Junior to Regular Software Engineer over 2.5 years, building multi-functional account management platforms that increased security and usability across internal applications. He cut page load time by approximately 20% via caching and efficient data access, improving user experience at scale. He developed banking integration that contributed approximately 15% revenue uplift with multi-language support, and created a centralized auth module that reduced new-feature integration time by approximately 40% while hardening security.
As a Freelance Full-Stack Developer on Fiverr (May 2019 - June 2022), he delivered 20+ projects across various industries, building responsive websites and custom web applications using React, Node.js, and PostgreSQL. He translated client needs into technical solutions, consistently improving performance and UX while refining skills in client communication, project management, and tackling diverse technical challenges.
As Founder and Lead Engineer of Cloud Web IDE, he led a cross-functional team to build a cloud IDE using Go, React, and Node.js, delivering a stable and scalable platform. He established CI, code quality, and branching standards that increased team throughput and reliability.
Oleksii is recognized for professional service as an Invited Judge for Global E-Commerce & Digital Marketing Awards 2025, Hack for Mental 2025, and Neuro Nostalgia Hackathon. He is a Senior Member of ECDMA, an achievement-based association. He has been featured in TechRound and TechTimes for bridging digital wellness and enterprise innovation, authored two peer-reviewed articles, and is an active contributor on HackerNoon. He holds a Bachelor's degree in Information Technology from the Polish-Japanese Academy of Information Technology. His technical expertise spans JavaScript/TypeScript, Go, Java, React, Next.js, Vue.js, Angular, Node.js, Nest.js, PostgreSQL, MongoDB, AWS, Docker, WebRTC, WebSockets, and AI/ML tools including TensorFlow, PyTorch, and cloud AI services.
As Founder and Lead Engineer of Cloud Web IDE, he led a cross-functional team to build a cloud IDE using Go, React, and Node.js, delivering a stable and scalable platform. He established CI, code quality, and branching standards that increased team throughput and reliability.
Oleksii is recognized for professional service as an Invited Judge for Global E-Commerce & Digital Marketing Awards 2025, Hack for Mental 2025, and Neuro Nostalgia Hackathon. He is a Senior Member of ECDMA, an achievement-based association. He has been featured in TechRound and TechTimes for bridging digital wellness and enterprise innovation, authored two peer-reviewed articles, and is an active contributor on HackerNoon. He holds a Bachelor's degree in Information Technology from the Polish-Japanese Academy of Information Technology. His technical expertise spans JavaScript/TypeScript, Go, Java, React, Next.js, Vue.js, Angular, Node.js, Nest.js, PostgreSQL, MongoDB, AWS, Docker, WebRTC, WebSockets, and AI/ML tools including TensorFlow, PyTorch, and cloud AI services.