You will get React project code review
Project details
5 years of experience with React.
You will get a list with architectural implementations/updates, a list with recommendations where there are problems with performance or potential security issues
You will get a list with architectural implementations/updates, a list with recommendations where there are problems with performance or potential security issues
Programming Languages
JavaScriptCoding Expertise
Performance OptimizationWhat's included
| Service Tiers |
Starter
$200
|
Standard
$300
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 3 days | 4 days | 5 days |
Number of Revisions | 1 | 1 | 1 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Optional add-ons
You can add these on the next page.
Custom
(+ 5 Days)
+$1,000
12 reviews
(12)
(0)
(0)
(0)
(0)
JC
Justin C.
Dec 8, 2022
Good guy, good work, very happy all around
KH
Kevin H.
Jul 16, 2025
React Frontend Developer Needed for Feature Enhancements
Very short collaboration as it was discussions and team lead based, overall very positive
AB
Andreas B.
Feb 11, 2025
Reactflow Implementation
Oleksandr is an amazing React developer, who has vast experience with developing even very complex react applications and make them simple and extensible. Highest quality of code I've seen and always fast delivery. I can fully recommend him for everything around react development/application architecture setup etc. Thanks Oleksandr for the great work!
NO
Nicholas O.
Aug 7, 2024
Senior Developer
Another great experience working with Oleksandr on React.js / TypeScript projects.
AB
Admin B.
Aug 1, 2023
Expert in Developing "Workflow Editors / NoCode-Editors / Canvas" like Miro, Figma, Make.com
NO
Nicholas O.
Dec 14, 2022
Senior FE Developer
About Oleksandr
Full-Stack Engineer (UI-Focused) | React / TypeScript / Micro-Frontend
100%
Job Success
Kyiv, Ukraine - 1:43 am local time
Frontend is my specialty and where I lead teams, but "full-stack, UI-focused" is the honest description: I build the polished, complex interface and the Node services, CI/CD, and Kubernetes behind it.
I work AI-first: I use Claude and coding agents to raise code quality, harden architecture, and catch stability issues early — and I write custom instructions and agent setups so the tooling produces consistent, review-ready results. The point isn't speed for its own sake; it's more maintainable code with fewer regressions. Every line of code and every UI I deliver is personally reviewed and tested before it ships — I use AI to work smarter, not to cut corners.
What I do best:
Large-scale, complex frontends — micro-frontend architectures, real-time SPAs, dashboards, CRMs, no-code/website builders, map & logistics apps, e-commerce
Scaling and structuring big custom codebases so teams can work in them without stepping on each other
Clean component architecture, state management, and pixel-accurate responsive UI
Leading small frontend teams (3–6, junior→senior) and standing up the delivery pipeline end to end
How I work:
AI-assisted development with Claude and agents — used deliberately to improve architecture, stability, and code quality
I build custom agent instructions/workflows so AI output is consistent and actually review-ready, not just fast
Strong on the fundamentals underneath it: clean architecture, testing, and maintainable state management
Rescuing AI-built codebases
Vibe-coded your MVP and now it's hard to maintain, extend, or trust? I refactor AI-generated apps into clean, tested, production-ready code — untangling the architecture, fixing the stability issues, and making it something a team can actually build on.
Frontend:
React (7+ yrs): Hooks, Redux, MobX, Reselect, Redux-Saga/Thunk, Styled Components, GraphQL
TypeScript (5 yrs), modern ES6+, functional programming
Micro-frontend architecture — large custom multi-team apps
Vue/Vuex (1+ yr); Next.js (prior experience)
HTML5 / CSS3 — Flexbox, Grid, responsive design (5 yrs)
Specialized: Reactflow (node/flow editors & diagrams), Lexical (rich text), Leaflet/OpenStreetMap, browser extensions (Chrome/Safari/Firefox)
Testing: Jest, Mocha/Enzyme, Cypress (e2e), Cucumber (BDD)
Tooling: Webpack, Gulp, npm/yarn..
Backend:
Node.js (5+ yrs): Nest, Express, Koa, microservices, Socketio & native WebSockets
PHP / Laravel, RabbitMQ, Redis, MySQL, MongoDB
Payments (Stripe, PayPal), Google APIs (Maps, OAuth, Analytics)
Web3 — Ethereum, MetaMask, OpenWallet, wallet/SDK integration
DevOps / Infrastructure:
Docker, Kubernetes, AWS (EKS, Lambda, routing)
CI/CD — GitLab CI, TeamCity; built shared pipelines (build, lint, test, deploy, notify) so project teams don't have to think about it
Monitoring & SRE — Datadog, New Relic, golden-signal alerting
Nginx, Apache, Linux
Selected work:
Built a cartographic logistics app from scratch — live truck tracking and freight offers
Contributed to one of the top e-commerce platforms in the US market
Built no-code editors / website builders and an electronic document-management system
Various startups — project management and SEO tools
If you need one engineer who can own the full stack — architect a complex UI, build the Node backend behind it, and ship it to production — that's exactly what I do. Happy to start with a small paid trial task so you can see how I work.
Steps for completing your project
After purchasing the project, send requirements so Oleksandr can start the project.
Delivery time starts when Oleksandr receives requirements from you.
Oleksandr works on your project following the steps below.
Revisions may occur after the delivery date.
Send the list