Smart Shift Scheduler
2026Smart Shift Scheduler
Workforce management SaaS with custom scheduling algorithm.
Next.jsTypeScriptTailwindRBAC
Yaroslav Stopenchuk
Frontend / Full-Stack Developer
I build production applications with React, Next.js, and TypeScript. From UI to database, clean code, and great UX.
Tech Stack
Technologies and tools I use to bring ideas to life
Frontend
React
Next.js
TypeScript
Gatsby
Styling
Tailwind CSS
SCSS
HTML5
Bootstrap
State & Data
Redux Toolkit
React Query
REST API
GraphQL
Tools & DevOps
Git
Docker
Node.js
Jest
Selected Projects
A few highlights from my recent work
Warsaw Museum Collections
2025Warsaw Museum Collections
Legacy React modernization with Docker environment fixes.
ReactDockerTypeScript
RED Software Site
2025RED Software Site
Agency website with dynamic routing and high-performance animations.
GatsbyGSAPTypeScripti18n
Socialman
2024Socialman
Legacy jQuery to vanilla JS refactor with 40% performance boost.
Vanilla JSHTMLSCSSBootstrap 5
Opera Ad Campaigns
2024Opera Ad Campaigns
Pixel-perfect promotional sites under strict deadlines.
Vanilla JSHTMLCSS
Elektrobohater
2023Elektrobohater
Social platform SPA with real-time feeds and filtering.
ReactRedux ToolkitReact Query
Experience
My professional journey in web development
May 2025 — Present
Freelance Full-Stack Developer
Smart Shift / Freelance
Built Smart Shift Scheduler: a multi-tenant workforce SaaS using Next.js 16, TypeScript, and Supabase (PostgreSQL + RLS). Engineered Stripe subscriptions, 4-tier RBAC, and transactional emails via Resend. Implemented drag-and-drop scheduling with optimistic updates and Recharts analytics dashboard. Lighthouse: 100/100/96.
Next.jsTypeScriptTailwind CSSRBAC
Oct 2023 — May 2025
Frontend Developer
RED Software House
Delivered 10+ commercial projects (Next.js, Gatsby) for clients including Opera, Warsaw Museum, and social platforms, optimizing load times by ~12%. Architected Elektrobohater SPA using Redux Toolkit & React Query. Modernized Warsaw Museum legacy React, built shopping cart logic, cutting turnaround by 30%. Mentored Junior Developer with code reviews, reducing ramp-up time by ~40%.
ReactNext.jsGatsbyRedux ToolkitReact QueryGSAP
Sep 2022 — Nov 2022
Frontend Developer (Training Program)
Itransition
Completed 3-month training program: React, MUI, and Agile workflows. Delivered 6 coding assignments and a final project; passed technical interview.
ReactMUIAgile
About Me
Hi! I'm Yaroslav, a Frontend / Full-Stack Developer with 3+ years of experience based in Wroclaw, Poland. I specialize in React, Next.js, and TypeScript. I've shipped 10+ commercial projects and independently built a multi-tenant SaaS with Stripe billing, RBAC, and analytics.
I deliver end-to-end, from UI to database. Experienced in mentoring, code reviews, and performance optimization. Passionate about clean code and great UX.
Clean Code
Great UX
Accessible
Let's Connect
Have a project in mind or just want to say hi? I'd love to hear from you.