● Full-stack web developer / Yaroslav
I build websites and web services that work for the business. From idea to production — one person, the whole chain.
01 / Who I am
My name is Yaroslav. I'm a full-stack web developer: I plan, design, code, launch and maintain — on my own.
Every project in this portfolio was built by me alone, from scratch. All of them run in production and earn money for their owners — that is the main metric I judge my work by.
I love problems where product meets engineering: when the job is not just to code a mockup, but to figure out how the site will sell — and carry it all the way to the first payment.
02 / Path
01 — Start
First commercial projects at 18. Working directly with clients: brief, estimate, design, code, deploy, support — all by myself. That's where I learned to speak the language of business results.
0102 — Growth
Product development in a team: processes, code review, scheduled releases, responsibility for other people's money. Freelancer speed, plus an engineer's discipline.
0203 — Now
Came up with a marketplace for buying and selling businesses with company due diligence by tax ID, and wrote all of it myself: the architecture, every feature, every edge case. I lead the product, the code and the growth.
0304 — Next
I take on projects where results matter: a product launch, a store, a service or a website that has to pay for itself. Direct contact, no middlemen.
0403 / Approach
Before opening the editor I figure out how the project will earn: who the customer is, what they buy and what stops them from buying.
Design, frontend, backend, database and server in one pair of hands. Nothing gets lost between contractors, decisions are fast.
SEO, speed, analytics, payments, admin panel, backups — everything a site needs to survive in the real world is built in from day one.
Launch is the beginning. I support, grow and scale the projects I build, and I'm honest about what's worth changing and what isn't.
I hand a model what's easy to verify: boilerplate, tests, drafts. Architecture, security and anything that touches money I decide myself. I read AI-written code like a stranger's pull request: models are confidently wrong and miss edge cases. Client data never goes to cloud models.
04 / Services
One-pagers for ads and product launches: a strong first screen, a clear offer, fast loading, analytics and lead forms.
A company website people trust: services or product catalog, case studies, documents and an admin panel to update content yourself.
Catalog, filters, cart, customer account, payments via SBP, invoice or card acquiring, integrations with accounting and delivery.
Complex products with roles, subscriptions, chats, external APIs and payment logic. Architecture that survives growth.
Payment systems, CRM, 1C, government registries, email, messengers, external APIs — I wire the website into business processes.
I take over existing projects: updates, speed-ups, fixes, new features and regular backups.
Interfaces in Figma, 3D in Blender and Three.js, promo video editing in Premiere Pro, presentation layouts in InDesign.
05 / Stack
Server rendering, App Router, strict typing and interfaces that stay smooth even on budget phones.
APIs, business logic, roles and permissions, admin panels that let clients manage content themselves.
Schemas designed to survive growth: indexes, migrations, reports and careful handling of money.
Design systems, pixel-perfect responsive layouts and motion that looks expensive without hurting performance.
Containers, automated builds and deploys to your own servers — no lock-in to a single platform.
WebGL scenes, shaders, 3D models and promo videos — the things that make a website memorable. Like this one.
Prototypes, interfaces and print. Design and code in one pair of hands means nothing is lost in handoff.
A working tool, not a replacement for an engineer. I spot where a model is wrong or shallow, fix its code and decide what it can be trusted with. I can run models on my own servers.
06 / Achievements
years of commercial development — from self-employment to my own company
of the portfolio built solo, from scratch — and running in production
co-founder of Comersi: came up with the product and wrote all the code of a business marketplace with tax-ID due diligence
projects delivered to clients — all running in production
ran Comersi's own neural networks on its own server — user data never leaves for the cloud
curiosity for hard problems: from shaders to tax reports over an API
∞
Tell me about the task — I'll reply within a day with a solution, timeline and budget.
→ Work
Each one solo, from scratch, in production and earning real money.
Drag the canvas. Bring a project to the centre — it opens itself.
Shown after launch.
∞
Marketplace for businesses · 2026
Check a business before you buy it. Due diligence by tax ID in a single report.
The market for buying and selling businesses runs on trust that isn't there: buyers see a nice listing but not the debts, lawsuits or real owners. The goal was a platform where checking a company is a built-in feature, not a separate quest.
Built a marketplace where every listing is tied to a tax ID. The platform pulls financial statements, court cases, tax burden and ownership structure from government sources into a single report. On top: smart subscriptions, buyer–seller chats, wishlist, comparison and a personal account.
