You will get Custom React Front-End Development | Fast, Secure, SEO-Friendly Web Apps
Top Rated
Project details
I build high-performance web applications and landing pages that drive measurable results.
My projects consistently achieve:
š 40ā60% faster load times compared to legacy solutions
š Up to 150% conversion rate improvement
š SEO-ready architecture with multilingual support
ā Clean, scalable code with tests and error handling
You will get not only a modern design but also a future-proof solution optimized for speed, security, and growth.
What I deliver:
1. Pixel-perfect, responsive UI from Figma
2. SEO-ready Next.js pages with App Router
3. Optimized Core Web Vitals for better rankings
4. Scalable architecture with reusable components
5. Integration with APIs, analytics, and multilingual support
š” Whether you need a single page, a full site, or a SaaS dashboard ā I can deliver clean, maintainable code with proactive communication and on-time delivery.
My projects consistently achieve:
š 40ā60% faster load times compared to legacy solutions
š Up to 150% conversion rate improvement
š SEO-ready architecture with multilingual support
ā Clean, scalable code with tests and error handling
You will get not only a modern design but also a future-proof solution optimized for speed, security, and growth.
What I deliver:
1. Pixel-perfect, responsive UI from Figma
2. SEO-ready Next.js pages with App Router
3. Optimized Core Web Vitals for better rankings
4. Scalable architecture with reusable components
5. Integration with APIs, analytics, and multilingual support
š” Whether you need a single page, a full site, or a SaaS dashboard ā I can deliver clean, maintainable code with proactive communication and on-time delivery.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$400
|
Advanced
$900
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 1 | 1 | 4 |
Design Customization | - | ||
Content Upload | - | - | |
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $120
Additional Revision
+$50
Additional Page
(+ 2 Days)
+$100
Design Customization
(+ 1 Day)
+$70
Content Upload
(+ 1 Day)
+$50Frequently asked questions
7 reviews
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JS
Jeanne S.
Jul 4, 2026
Design Services Agreement
Mykola was responsive, communicated clearly throughout the project, and delivered exactly what I asked for. He was professional and a pleasure to work with.
IC
Ilan C.
May 20, 2026
Lovable automation - Live publishing
Mykola is a great freelancer and knows very well his topic, he helped me with Lovable, servers, hosting services. I strongly recommend his work!
AB
Adrian B.
Feb 26, 2026
Front-End Developer (Next.js + Tailwind) for Modern Consulting Website
My experience with Mykola was highly collaborative and professional. He communicates clearly, confirms understanding before moving forward, and stays solution-focused when challenges arise. Heās adaptable in evolving environments and balances technical depth with strong usability instincts. If youāre looking for someone who thinks strategically and delivers reliably, heās an excellent choice.
IC
Ilan C.
Oct 29, 2025
Reconnect Lovable to live site to GitHub, remove Vercel connection
Excellent freelancer! I worked with Mykola on securing my website access, as I had a mess between Github, servers, Lovable access, and more. Mykola reordered everything very quickly, and thanks to him, I can work again on my site!
PP
Pratik P.
Aug 27, 2025
React and React Native Developer with Tamagui and Typescript Experience
About Mykola
Front-End Developer | React, Next.js, TypeScript, SaaS & Tailwind CSS
94%
Job Success
Berehove, UkraineĀ - 3:33 am local time
I build and improve production SaaS products with React, Next.js, TypeScript, Node.js, Supabase & PostgreSQL ā from complex frontend and APIs to authentication, payments, AI integrations, databases, and deployment.
If your MVP needs to become production-ready, your existing SaaS needs new features, or you need a developer who can enter a complex codebase without weeks of onboarding, I can own the work across the stack and move it forward with clear communication and minimal management overhead.
š WHAT I CAN BUILD & SOLVE
ā¢ React + Next.js SaaS applications ā responsive product interfaces, dashboards, admin panels, customer portals, complex workflows, SSR, and production-ready frontend architecture.
ā¢ Full-Stack Development ā TypeScript / JavaScript applications with Node.js backends, business logic, database integration, REST API development, third-party API Integration, and scalable web application architecture.
ā¢ Supabase + PostgreSQL ā database architecture, authentication, Row Level Security (RLS), storage, real-time functionality, user roles, permissions, and production integrations.
ā¢ Stripe + authentication ā subscriptions, payments, access/unlock logic, account flows, protected routes, OAuth/JWT-based authentication, and SaaS billing functionality.
ā¢ AI / OpenAI API integrations ā structured AI features, LLM-powered product workflows, automation, data processing, and AI functionality integrated into existing SaaS products.
ā¢ Existing products & production fixes ā joining unfamiliar React / Next.js codebases, debugging, performance optimization, feature development, refactoring, GitHub workflows, Vercel deployment, CI/CD, and production issues.
I also work with React Native for cross-platform mobile products and have hands-on experience with Vite and Lovable-based projects when they are already part of the product stack.
š EXPERIENCE & PROOF
4+ years building and improving production web applications across SaaS and other product environments. My work includes both greenfield development and taking over existing applications where understanding the architecture quickly matters as much as writing new code.
ā Recent Upwork feedback:
āNicholas was exceptional from start to finish. He jumped into an already-complex frontend codebase with minimal onboarding, quickly understood the structure and logic, and executed high-quality work...ā
āThis was my second time working with Nicholas and would definitely work with him a third time. Great work and communication from start to finish. Thanks again!ā
āļø TECH STACK
Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS, responsive UI, React Query, modern component architecture, Vite
Backend: Node.js, REST API, API Integration, authentication, server-side logic, third-party services
Database: Supabase, PostgreSQL, SQL, Database design, RLS, storage, real-time data
AI & Integrations: OpenAI API, AI/LLM integrations, Stripe, payment systems, external APIs
Mobile: React Native, Expo, cross-platform application development
Deployment: Vercel, GitHub, CI/CD, production deployment, hosting workflows, Lovable integrations
š HOW I WORK
1. Scope & architecture ā goals, constraints, edge cases, and implementation plan.
2. Development & updates ā structured delivery, clear commits, proactive communication.
3. QA & production ā testing, responsive behavior, integrations, and error states.
4. Deployment & handoff ā GitHub/Vercel deployment, release fixes, and continued development.
Iām particularly useful when you need someone who can work beyond a narrow ticket: understand how the frontend, backend, database, authentication, APIs, payments, and deployment affect each other and make practical technical decisions.
If you need a Full-Stack Developer for a React / Next.js SaaS product ā whether you are launching an MVP, improving an existing application, adding AI or Stripe, or fixing production issues ā click āInviteā or send me a message on Upwork.
Keywords: Full-Stack SaaS Developer, Full Stack Developer, React Developer, Next.js Developer, React TypeScript Developer, Next.js TypeScript Developer, Full-Stack React Developer, React Node.js Developer, SaaS Developer, SaaS Web Application Developer, React SaaS Developer, Next.js SaaS Developer, Supabase Developer, Next.js Supabase Developer, PostgreSQL Developer, Node.js Developer, REST API Developer, API Integration Developer, Stripe Integration Developer, OpenAI API Developer, AI SaaS Developer, React Native Developer, Front-End Developer, Front-End Development, Full-Stack Development, Web Application Developer, Production SaaS Developer
Steps for completing your project
After purchasing the project, send requirements so Mykola can start the project.
Delivery time starts when Mykola receives requirements from you.
Mykola works on your project following the steps below.
Revisions may occur after the delivery date.
Consultation & Requirements
Define scope, get your Figma/wireframes.
Implementation
Build UI with React/Next.js, ensuring responsiveness.