Sergey Grishuk | Tech Lead & System Architect

Core Competencies

Secure Architecture Design

Designing scalable, resilient systems with security baked in from the first line of code. Expertise in threat modeling complex distributed architectures and preventing logic flaws.

DevSecOps & Infrastructure

Building CI/CD pipelines that empower developers to ship faster without breaking security. Transforming manual bottlenecks into automated engineering standards using Docker and Linux internals.

Technical Leadership

Leading engineering teams through mentorship, code reviews, and setting high technical standards. Turning business requirements into robust technical roadmaps.

System Internals & Research

Deep understanding of OS internals (Linux/Android) to optimize performance, debug complex production issues, and harden systems against sophisticated vectors.

Posts

Open Source Website Protection

In today's digital economy, robust website security isn't a luxury, it's a necessity. However, for many small and medium sized businesses, the enterprise security market presents a significant barrier. With solutions often carrying five or six figure price tags, comprehensive protection can feel out of reach. But what if you could build a formidable defense without the enterprise budget?

Web Development Security Open Source

CIR In Depth - How Website Identify Users Without Cookies

Modern websites can track users without cookies by fingerprinting their hardware — GPU rendering, CPU cores, screen resolution, and media devices create a unique identifier that persists across sessions. These techniques, known as Cookieless Identity Resolution (CIR), often operate outside cookie consent banners, creating significant privacy and legal risks for businesses that unknowingly facilitate this tracking through third-party scripts.

Web CIR Privacy Cookies Web Development

Get In Touch

I'm always open to connecting with other professionals in the field. Feel free to reach out.