Serhii Nikolaienko
Founder of Seganiko, full-stack developer and digital solutions architect since 2012. I design web platforms, custom CRM systems and e-commerce stores that deliver measurable results — not just code.
Passionate about artificial intelligence and its practical applications, I integrate AI assistants, chatbots and automation tools into my clients' projects. I believe technology should simplify life, not complicate it.
My expertise: WordPress & WooCommerce, custom CRM, AI integration, technical SEO, complex systems architecture.
Beyond code, I'm a curious and versatile person. I love hiking in the mountains, observing nature and stargazing — moments that fuel my creativity and my ability to see things from a different perspective.
Based between France and Luxembourg, I help businesses across Europe and internationally with their digital transformation.
Latest articles

Deep Investigation: How YouTube/TikTok/Instagram Feeds Work
Why a feed exists in the first place On screen, a feed’s job is simple:…

Speed = Money: a Practical Guide to Core Web Vitals and Revenue
Faster pages convert better. Skipping the academic stuff, here’s how speed (LCP, INP, CLS) turns…

SEO 2.0: Topical Graphs, Programmatic SEO, and Internal Linking
SEO is growing up: from keywords and “one page per phrase” to entity graphs, programmatic…