Selected work
Six production builds across fintech, B2B SaaS, IoT, and nonprofit platforms — the architecture calls and the outcomes they produced.
Public site · Fintech
GRX — Public Platform
Fullstack Engineer — owned architecture end to end
Public-facing website for a Swiss crypto-fintech platform, built end to end from design handoff to production — including the shared component library behind it.
95+
Lighthouse score, sub-1.5s mobile LCP
50+
component shared library, ~70% fewer visual inconsistencies
Product · Crypto banking
GRX Pay — Crypto Payment Solution
Fullstack Engineer
Multi-currency crypto banking product supporting 24+ cryptocurrencies, with real-time balance tracking and transaction ledgers.
24+
currencies, real-time balances via WebSocket
100%
transactions surfaced with AML / risk data
Product · BI / Analytics
Enterprise BI Dashboard
Fullstack Engineer — built from scratch
Business intelligence dashboard for enterprise Amazon sellers with $10M+ GMV, handling 100,000+ orders.
−45%
initial render time via virtualized tables + cursor pagination
Product · Investment platform
Marketplace Investment Platform
Fullstack Engineer
Cross-references live Amazon marketplace metrics against supplier data feeds in real time.
−30%
time-to-interactive via resilient CSV ingestion + validation pipeline
Product · IoT / Environmental
Air-Quality Monitoring Dashboard
Fullstack Engineer — designed and built solo, no dedicated designer
Operator dashboard for a live network of 240 distributed air-quality sensors, monitoring pollution trends in real time.
240+
distributed sensors monitored live across Berlin
100%
test-suite coverage — cross-browser and accessibility checks included
Product · Nonprofit SaaS
Donation & Fundraising Platform
Fullstack Engineer — designed and built solo, no dedicated designer
Donation and fundraising platform for nonprofits — campaigns, recurring giving, and donor management, built solo.
7+
donor-facing modules shipped — checkout, campaigns, donor CRM, recurring giving, embeddable widgets
100%
built solo, frontend to backend, concept to production
Personal projects
Things I've built for myself, end to end — no client, no handoff, every decision mine to own.
Personal project · Multi-app platform
seikatsu — Personal Super App
Off-the-shelf apps are too rigid for how I actually track my life, so seikatsu is a self-built alternative: one authenticated shell with independent mini-apps underneath — a finance tracker, a kanban board, a books log, with a habit tracker and a wishlist manager next in line. Public sign-in is open at seikatsu.danylomorhun.com.
Personal project · E-commerce · Polish market
WellBotany — Health & Supplements Store
A production Polish-market e-commerce store for supplements, vitamins, and bio products, live at wellbotany.pl — designed and built solo end to end, from the database schema through to the storefront UI. Wired to real Polish commerce rails: online payment, parcel-locker and courier shipping, and a hub syncing stock and orders with a major marketplace.
Personal project · Portfolio
danylomorhun.com — This Site
This site — rebuilt from scratch to do one job well: let someone hiring a fullstack engineer find me, see what I've built, and reach out, in under a minute.
Experience
Feb 2026 — Jul 2026
Fullstack Engineer · Golden Ratio Exchange
Switzerland
Owned frontend architecture for a Swiss crypto-fintech platform, from the public site to core banking modules.
Dec 2021 — Jan 2026
Fullstack Engineer · EZCLOUD
United States
Owned interface design solo, no dedicated designer on the team, across everything from Amazon seller analytics dashboards to an air-quality monitoring platform and a donation SaaS product.
About
I work on the parts of a product that have to hold up under real conditions: fintech dashboards processing six-figure order volumes, crypto banking screens updating over live sockets, BI tools rendering hundreds of thousands of rows without stalling the tab.
The toolkit shifts from project to project; the actual job is judgment — knowing when a virtualized table beats pagination, when a live connection beats polling, when a shared component library saves the next six months of work.
Sometimes that means building on top of a design system someone else shipped; other times there's no designer on the team at all, and every interface decision is mine to make, start to finish.
Open to Frontend or Fullstack roles — let's talk.
danymorhun@gmail.com — or reach out on GitHub / LinkedIn.