You will get a React Developer to fix bugs and stabilize your app
Project details
As a React Developer, you will get a stable, production-ready application with all reported bugs fixed and unstable components properly refactored. With over 10 years of frontend development experience, I specialize in diagnosing root causes rather than patching symptoms, so fixes hold up under real usage instead of resurfacing weeks later. Working as a Front End Developer, I test every fix across browsers and devices before delivery, run regression testing to make sure nothing else breaks, and document what was changed and why. If deeper architectural issues are causing repeated bugs, I'll flag that clearly rather than applying a quick patch that masks the real problem. You get clean, maintainable code, a clear summary of every fix, and a support window to catch anything that slips through after deployment.
Please message me before ordering to align on your project requirements and scope.
Please message me before ordering to align on your project requirements and scope.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$450
|
Advanced
$950
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 days |
Number of Revisions | 1 | 3 | 5 |
Design Customization | - | - | |
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
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About Yaroslav
React Developer | Front End Developer | Full Stack Developer | Next.js
100%
Job Success
Kharkov, Ukraine - 4:25 am local time
🚀 I'm a React Developer with 10+ years of experience shipping production-grade web applications across Europe and the US — from multi-tenant B2B platforms to blockchain identity systems, healthcare marketplaces, and real-time trading dashboards.
🏢 Enterprise & B2B Platforms
As a React Developer and Front End Developer, I design interfaces that stay stable under real transaction volume — not demo-quality prototypes that fall apart under load. Recent work includes a residential services management platform unifying ERP operations with resident-facing mobile apps and a healthcare staffing marketplace connecting certified professionals with patients through role-based dashboards spanning five distinct user types. This kind of work aligns well with full stack developer engagements, where frontend and backend need to move together without one side blocking the other.
⛓️ Blockchain & Web3
As a React Developer working in Web3, I've built an NFT-based royalty platform enabling creators to tokenize future revenue shares and a multi-chain NFT trading dashboard aggregating data across 15+ marketplaces for 150K+ users in real time. As a web developer comfortable with Web3 primitives, I bring the same production discipline to blockchain products that I bring to standard SaaS work.
📊 Data-Heavy Dashboards & Real-Time Systems
As a Front End Developer, I specialize in dashboard-style applications. As a React Developer, I build these interfaces with state management patterns (Redux) that stay predictable as data volume grows, and I pay close attention to how information is surfaced — filtering, sorting, live updates — so users can act on it quickly instead of digging for it.
🌍 Humanitarian & Regulated Industries
I've also worked as a React Developer on platforms with real-world stakes: a humanitarian emergency response platform helping vulnerable communities access verified information during crises, and a national pharmaceutical database serving healthcare professionals with regulator-approved medicine information across thousands of records. As a Front End Developer in regulated spaces, I understand that clarity and reliability matter more than visual flourish — the interface has to work correctly the first time, every time.
⚡ Performance & Modern Stack
As a React Developer, I work with Next.js, TypeScript, and Redux for hybrid rendering and predictable state management, optimizing for responsive, accessible, cross-browser interfaces so products feel fast on every device. Whether the target is a react native developer handoff for a mobile companion app or a straightforward web developer deliverable, I own features end-to-end — from REST API integration through UI polish and cross-browser testing.
🛠️ Tech Stack
As a JavaScript developer, I'm proficient in React, Node.js, TypeScript, HTML5, CSS3, and React Native. Frontend work spans Bootstrap, Web Design, Responsive Design, and jQuery; backend and data work span MongoDB, Vue.js, and Python — the kind of range a Python developer role sometimes calls for, too. I've also picked up PHP and general Software Development tasks when a project needed it, jumping into unfamiliar codebases quickly and keeping delivery moving without a long ramp-up.
🔍 Code Quality & Collaboration
Years of shipping production code have made code review, merge request hygiene, and adaptive/responsive markup second nature. I work comfortably across JavaScript frameworks, adapting quickly when a team's stack shifts mid-project — because the goal is always a working product, not attachment to a specific tool.
🎯 What I'm Hired For
Clients hire me as a React Developer for scalable, production-ready frontends, as a Front End Developer for dashboard-heavy and data-intensive products, and as a full stack developer when a project needs frontend and backend moving in lockstep. I've worked across ecommerce, healthcare, logistics, fintech, gaming, and Web3 — building everything from MVPs to multi-market, multi-tenant platforms serving real users at scale.
🤝 How I Work
You get a React Developer who reads the brief carefully, asks the right questions before writing code, and communicates clearly throughout the engagement. I favor a pragmatic, scalable approach: clean architecture from day one, well-tested code, and strong ownership of performance and maintainability. Whether you need a React Developer for a complex SPA, a Front End Developer to rebuild an existing product, or a full stack developer to own a feature end-to-end, I'm ready to jump in.
💬 Let's discuss your project — happy to walk through relevant experience and a recommended approach on a quick call.
Steps for completing your project
After purchasing the project, send requirements so Yaroslav can start the project.
Delivery time starts when Yaroslav receives requirements from you.
Yaroslav works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery
Reproduce reported bugs, review error logs, and identify unstable or fragile areas of the codebase before starting any fixes.
Development & QA
Fix identified bugs, refactor unstable components where needed, and run regression and cross-browser testing to confirm stability.