Hire the Best React.js Developers
in Denmark
Copenhagen, Denmark
โ๐ป 1๐๐+ ๐๐๐๐๐๐๐๐โ โ โ โ โ โ๐๏ธ 4 ๐๐๐๐๐ ๐๐ ๐๐๐๐๐๐๐๐๐๐โโ โ โ โ โ โ๐ ๐๐๐๐๐๐๐๐๐ ๐๐+ ๐๐๐๐ ๐๐๐ ๐๐๐๐๐๐๐๐๐๐ ๐๐๐๐ ๐๐๐๐๐๐ ๐๐๐๐๐๐๐๐๐๐ Need a reliable developer to build a scalable ๐ ๐ฎ๐ฅ๐ฅ ๐๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง, polish your ๐ ๐ซ๐จ๐ง๐ญ๐๐ง๐, launch a ๐ ๐๐๐ ๐๐๐ or deliver a custom ๐๐๐๐๐ / ๐๐๐๐.๐๐ ๐๐๐ - fast and without surprises? My name is Sonaly, a ๐๐จ๐ฆ๐ฉ๐ฅ๐๐ญ๐ ๐๐๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ-๐๐๐ซ๐ญ๐ข๐๐ข๐๐ ๐๐๐๐๐ญ & ๐๐๐ฑ๐ญ.๐ฃ๐ฌ ๐ ๐ฎ๐ฅ๐ฅ-๐๐ญ๐๐๐ค ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ with 4 years of experience (M.Sc. in Software Engineering). I build pixel-perfect Figma โ Next.js conversions, robust full-stack web applications, and custom frontend solutions, delivering maintainable, high-performance production code with strong attention to detail and dependable post-launch support. ๐ ๐๐๐๐ ๐ ๐๐๐ ๐๐๐๐๐ ๐ ๐๐ ๐๐๐ ๐ ๐๐๐๐๐ & ๐๐๐๐.๐๐ ๐๐๐ ๐๐๐๐๐๐๐๐๐๐๐ Build production-ready React & Next.js apps with scalable architecture, clean code, secure auth, and performance-optimized rendering. ๐จ ๐ ๐ข๐ ๐ฆ๐ โ ๐๐ซ๐จ๐๐ฎ๐๐ญ๐ข๐จ๐ง ๐๐๐ฑ๐ญ.๐ฃ๐ฌ ๐๐จ๐ง๐ฏ๐๐ซ๐ฌ๐ข๐จ๐ง๐ฌ Pixel-perfect implementations from design files with responsive breakpoints, consistent spacing & typography tokens, and accessible components that match your design system. ๐ฏ ๐ ๐ฎ๐ฅ๐ฅ ๐๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง๐ฌ (Frontend + Backend) Complete feature delivery: frontend UI, backend endpoints (Node/Express + Prisma), database modeling (Postgres/MongoDB), and client-server integration - shipped as tested, documented increments. ๐ ๐๐๐ญ๐, ๐๐๐๐ฌ ๐๐ง๐ 3๐ซ๐-๐๐๐ซ๐ญ๐ฒ ๐๐ง๐ญ๐๐ ๐ซ๐๐ญ๐ข๐จ๐ง ๐๐ฒ๐ฌ๐ญ๐๐ฆ๐ฌ Integrations with REST/GraphQL endpoints, payment processors (Stripe), analytics, CRMs, and AI APIs (OpenAI/ChatGPT). I handle webhooks, secure token flows, and reliable sync between front and back ends. ๐ ๐๐ฎ๐ญ๐ก & ๐๐๐ฒ๐ฆ๐๐ง๐ญ ๐๐จ๐ซ๐ค๐๐ฅ๐จ๐ฐ๐ฌ Implement secure sign-in flows (NextAuth, Clerk, or custom JWT), subscription billing, and checkout flows with smooth UX and strong security practices. ๐ก๏ธ ๐๐๐๐ฎ๐ซ๐ข๐ญ๐ฒ & ๐๐๐ฌ๐ญ ๐๐ซ๐๐๐ญ๐ข๐๐๐ฌ Input validation, secure storage of secrets, rate-limit awareness, and defensive coding to reduce risk and protect user data. ๐ ๐๐๐ฉ๐ฅ๐จ๐ฒ & ๐๐ฉ๐ฌ ๐๐๐๐๐ ๐ฎ๐๐ซ๐๐ฌ Production-ready CI/CD with Vercel/Netlify + GitHub Actions, environment strategy, and rollout checks so releases are repeatable and low-risk. ๐ ๐๐ง๐ ๐จ๐ข๐ง๐ ๐๐๐ข๐ง๐ญ๐๐ง๐๐ง๐๐ & ๐๐ฎ๐ฉ๐ฉ๐จ๐ซ๐ญ Post-launch support packages, timely bug fixes, dependency updates, and optional SLA-style response windows so your product stays healthy and up-to-date. ๐ก ๐๐จ๐ง๐ฌ๐ฎ๐ฅ๐ญ๐ข๐ง๐ & ๐๐๐ฑ๐ญ-๐๐ญ๐๐ฉ ๐๐จ๐๐๐ฆ๐๐ฉ๐ฌ Not sure what to build first? I provide discovery sessions, prioritization, and technical roadmaps to maximize impact and minimize wasted effort. ________________________________________ ๐ ๏ธ ๐๐๐๐๐ & ๐๐๐๐๐๐๐๐๐๐ ๐๐๐๐ ๐ ๐๐๐๐๐๐๐ & ๐ ๐๐๐๐๐๐๐๐๐ โข React โข Next.js (App Router & Pages) โขRedux โข Component-driven architecture (reusable libraries) ๐๐๐๐๐๐๐ & ๐๐ ๐๐๐๐๐๐๐๐๐ โข Tailwind CSS, CSS3, Responsive design โข Shadcn-ui, radix-ui, styled-components โข Figma โ pixel-perfect Next.js conversions ๐๐๐๐๐๐๐๐๐ & ๐๐๐๐๐๐ โข TypeScript (projects as needed) & modern JavaScript (ES6+) โข HTML5, SCSS ๐๐๐๐๐ & ๐๐๐๐ ๐๐๐๐๐๐๐๐๐๐ โข Redux Toolkit / RTK Query, Context API, custom hooks โข Client/server rendering patterns (SSR, SSG, ISR, RSC) ๐๐๐๐๐๐๐ & ๐ ๐๐๐-๐๐๐๐๐ โข Node.js, Express โข Prisma ORM โข Databases: PostgreSQL, MongoDB โข REST API design, third-party integrations ๐๐๐๐ & ๐๐๐๐๐๐๐๐ โข NextAuth, custom auth flows, JWT strategies โข Stripe (payments & webhooks), payment gateway integration ๐๐๐๐๐๐ & ๐๐๐๐๐๐๐๐๐๐ โข Vercel, Netlify, CI/CD basics, Git workflows (GitHub/GitLab/Bitbucket) โข Deployment-ready pipelines & environment management ๐๐๐๐๐๐๐, ๐๐๐๐ ๐๐๐๐๐๐๐ & ๐๐๐๐๐ ๐๐๐ โข Performance optimization, code refactor, accessibility (a11y) best practices โข Testing & bug triage, documentation, modular architecture ๐๐๐๐๐๐ & ๐๐๐๐๐๐๐ ๐๐๐๐๐ โข Figma, PSD handoffs โข Postman, Notion, Trello, Jira ________________________________________ ๐๐๐ ๐๐๐๐๐๐ ๐๐ โ Focused & reliable โ Proven fundamentals โ Value-first delivery โ Pixel-perfect & scalable โ Clear collaboration โ Aftercare If you want to discuss your project in detail, letโs schedule a call or click the ๐๐๐๐๐๐๐ button - Iโm happy to spend time understanding your goals (even if we donโt start a project right away). Letโs build something great together. โจ React.js Developer, Next.js expert, Frontend performance optimization TypeScript, Tailwind CSS, Figma to Next.js, Full-Stack, Node.js, Prisma, PostgreSQL, MongoDB, API Integration, Bug Fix, SaaS, MVP, Frontend Developer, Full Stack Developer.
- React
- JavaScript
- Next.js
- Tailwind CSS
- TypeScript
- Redux
- Node.js
- MongoDB
- PostgreSQL
- HTML5
- CSS 3
- Web Development
- Web Design
- Front-End Development
- Full-Stack Development
Arhus, Denmark
Iโm a frontend developer with 5+ years of experience building fast, scalable, and polished web applications using JavaScript and TypeScript. Iโve worked with both creative studios and enterprise SaaS teams, so Iโm comfortable building animation-heavy marketing sites as well as complex, maintainable product systems. ๐ก What I can help you with High-quality UI & animations I create smooth, production-ready animations using GSAP and Pixi.js. Itโs not just about visuals I focus on performance so everything feels fast and responsive. Fast & scalable frontends I build applications in React and Svelte that load quickly, stay maintainable, and scale as your product grows. Frontend architecture Iโve designed monorepo setups, built shared component libraries, and worked on systems used across multiple teams. End-to-end features If a feature needs backend support, I can handle the Node.js/API side as well. ๐งฉ Selected work - Auditbull - SaaS audit platform with survey builder, role-based access, and data visualization - Next Level Value - Enterprise CPQ tools and multi-team frontend architecture - Set Snail - Animation-focused marketing sites (Svelte + GSAP + Pixi.js) ๐ ๏ธ Tech stack Frontend: React, Svelte, Next.js, TypeScript, Tailwind, GSAP, Pixi.js Backend: Node.js, Express, NestJS, REST APIs Tools: CI/CD, GitHub Actions, SQL ๐ค How I work - I take time to understand the problem before jumping into code - I focus on clean, maintainable, and performant solutions - I communicate clearly and keep things moving - I take ownership from idea to production If youโre looking for someone who can build fast, think critically, and deliver polished results letโs talk.
- React Native
- React
- JavaScript
- TypeScript
- Svelte
- GSAP
- Next.js
- API Integration
- Tailwind CSS
- PixiJS
- Flutter
Horsens, Denmark
I'm a senior software developer with 5+ years of experience, offering premium software services to my clients. I am hyper-responsive, punctual, and available all week during regular business hours. My unique combination of skills facilitates me in suggesting the best solutions for your project that are easy to scale and inexpensive to maintain. My broad frontend expertise blended with cloud computing experience helps me get a comprehensive picture of your project: starting from prototyping your idea to transforming it into a sleek website your users will love. You have the idea; I have the skills to make it happen! Let's get in touch and talk more about it!
- React Native
- React
- JavaScript
- TypeScript
- Amazon Web Services
- Next.js
- GraphQL
- Node.js
- FFmpeg
- C++
- WebGL
- PixiJS
- WebAssembly
- Computer Graphics
- UX & UI
- AWS Amplify
- Sass
- Web Application
- HTML5
- RESTful Architecture
- AWS AppSync
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Resources to help you hire

Cost to hire a React.js Developer
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React.js Developer job description template
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React.js Developer interview questions
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Resources to help you hire

Cost to hire a React.js Developer
Explore typical React.js Developer rates and what businesses pay to hire top talent.

React.js Developer job description template
Get tips to write a job post that attracts qualified React.js developers.

React.js Developer interview questions
Top interview questions to help you hire the right React.js developers, faster.
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