CogniAgent / Current public siteCogniAgent · platform redesign
Led the first rebuild of the marketing site: a full redesign, a move from legacy page structures to Gutenberg blocks, and a faster, more reliable publishing workflow.
SENIOR FULL-STACK DEVELOPERPERSONAL PORTFOLIO — VOL. 01 / 2026
VALENTYN MELNYCHENKO
Code meetscharacter.
Thoughtful interfaces. Dependable systems.
A little unexpected.
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FIG. 001 — CONTINUOUS FORM
A DIFFERENT PERSPECTIVETOOLS OF THE TRADE
React+Next.js+TypeScript+WordPress+Node.js+CI/CD
00 / SELECTED WORKTHE PROBLEM. THE DECISIONS. THE DELIVERY.
Engineering,
in context.
Content platforms. Commerce.
The systems behind the experience.
COMMERCIAL EXPERIENCE
CogniAgent / Current public site
CogniAgent / Current public siteCogniAgent · platform migration
Led the next platform migration and the core implementation, from content and data architecture to AI-assisted publishing, deployment, and team delivery.
Glorium Technologies / Current public siteGlorium Technologies · legacy modernization
Set the architecture and delivery workflow for modernizing a live legacy site in stages, keeping publishing available throughout the transition.
MIN / Current public site visualMIN · international commerce
Owned the evolution of an international multisite commerce experience, rebuilding key buying flows and expanding product capabilities while the business kept operating.
01 / EXPERTISEDESIGNED WITH INTENT. BUILT TO LAST.
Built for the
real world.
From the details you see
to the systems you don’t.
Full-stack, all the way through.
Interfaces that feel right.
Responsive experiences with careful typography, meaningful interaction, and attention to the smallest detail.
Systems that hold up.
Reliable foundations, connected services, and a delivery process that supports a product beyond its launch.
03Commerce & content
WordPress · BigCommerce
Custom WordPress development and BigCommerce storefronts. Content structures and interfaces shaped around the people who manage and use them.
04Delivery & automation
CI/CD · AI workflows
Deployment pipelines and AI-assisted workflows that make repetitive work simpler, with a focus on dependable delivery and maintainable code.
02 / THE PERSON BEHIND THE CODEENGINEERING WITH A POINT OF VIEW
A developer.
A problem solver.
Always curious.
I’m Valentyn, a senior full-stack developer with 6+ years of professional experience. My work spans large content-platform migrations, commerce integrations, and engineering workflows built around AI and MCP.
My work spans modern frontend development, commerce, content platforms, and the workflows that bring everything together.
I care about the whole picture: how a product feels, how it works, and how well it holds up when real people depend on it.
6+YEARS IN DEVELOPMENT
Finland↗BASED IN LAHTI
A FEW THINGS I BELIEVE INTHE APPROACH
My approach to development
Purpose before pixels.
Understand the problem first.
The right solution follows.
Details make the difference.
The small things are the experience.
They deserve the same care.
Build for what’s next.
Clear code. Thoughtful foundations.
Room for a product to grow.
03 / NEXT CHAPTERGOOD THINGS START WITH A CONVERSATION
A product to build. A problem to solve.
Or just a good conversation.