I build production web applications and deliver end-to-end product features — from problem framing to release and iteration.
I work at the intersection of engineering + product: translate business goals into reliable UX, ship iteratively, measure impact, and keep systems maintainable at scale.
- 🌍 Cherkasy, Ukraine (open to remote)
- ✉️ kononyukii@gmail.com
- 🔗 LinkedIn: https://www.linkedin.com/in/ivan-kononyuk-1924201b4/
- Ownership from discovery → delivery → iteration
- Strong execution: small PRs, predictable releases, fast feedback loops
- UX quality: accessibility, performance, edge cases, resilience
- Cross-team collaboration: product/design/backend/stakeholders
- Pragmatic architecture: scalable patterns without over-engineering
I use AI tools in daily engineering work to increase delivery speed without sacrificing quality:
- Faster iteration on implementation details (while keeping architecture stable)
- Higher-quality refactoring and safer changes via tests + small PRs
- Better documentation/ADR discipline and clearer PR communication
- Consistent patterns and reduced cognitive load on repetitive tasks
Frontend
- React, Next.js (App Router), TypeScript (strict)
- TanStack Query / Router, Zustand
- GraphQL (BFF pattern), REST, WebSockets
Styling & UI
- Tailwind CSS + shadcn/ui (design-system driven)
- SCSS (modular architecture)
- styled-components (CSS-in-JS)
Quality & Delivery
- Vitest, Playwright
- GitHub Actions, CI discipline
- Performance profiling & optimization
A local-first app focused on safe mental wellness routines (no medical claims / no diagnosis).
Stack: Next.js · TypeScript · Tailwind · shadcn/ui · Zustand · TanStack Query · Zod · IndexedDB
Testing: Vitest · Playwright · CI: GitHub Actions
Focus: architecture, offline reliability, accessibility, performance, release discipline.
- Turning ambiguous product requirements into clear solutions
- Building reusable UI patterns and scalable feature architecture
- Improving DX and keeping codebase “easy to change”
- Shipping reliably under real constraints
Open to collaborating on interesting products (frontend-heavy or full product delivery).