Hire the Best Gatsby Developers

Hey! I'm developing sites using Jamstack technology Astro, Gatsby, and Next.js. I have built over 80+ Jamstack sites that my clients can edit themselves using a CMS such as Storyblok or Contentful. ⭐️ Why me? - I have been freelancing since 2019 and don't plan on stopping - My clients trust me, for an example I have handled a domain transfer worth $30,000 for a client - I am available most days and certainly every week - I work great in teams, some of the companies I provide development to have over 100+ employees, out of which a great amount are developers - My clients tend to turn into long-term clients thanks to the great work I provide, I still have clients from the year I started - I work great solo too, I can launch a site by completing every step along the way ⭐️ My main technologies, you can combine them as your tech stack: - Astro - Gatsby - Next.js - Headless CMS (look below) - HTML / CSS / JavaScript - Node.js ⭐️ CMS platforms that I have provided real production websites with: - Storyblok - Contentful - Dato CMS - Prismic - Agility - Strapi - WordPress - Directus - Shopify

Are you tired of working with developers who don't understand project scope, produce messy code, or consistently miss deadlines? I can help you stay on track and within budget with my clean code, strong communication skills, and commitment to meeting deadlines. As a Full-Stack Developer, I am experienced in both front-end and back-end development. I can manage back-end services and ensure smooth data exchange between the server and users. I can also develop and code all server-side logic and respond to requests from front-end developers. My expertise in object-oriented programming, understanding of MVC design patterns, and familiarity with front-end technologies like HTML5, JavaScript, and CSS3 make me well-equipped to handle your project. Some of my capabilities include: - Analyzing website and application requirements - Writing back-end code and building efficient back-end modules - Developing back-end portals with optimized databases - Troubleshooting code and application issues - Integrating data storage solutions - Finalizing back-end features and testing web applications - Updating and improving application features for better performance I also have a wealth of knowledge and experience, including: - Proficiency with Node web frameworks like Express and Koa - Proficiency with Python web frameworks like Spring - Familiarity with front-end technologies like CSS3, JavaScript, and HTML5 - Understanding of object-oriented programming - Experience creating scalable applications - Proficiency with code versioning tools like Git, Mercurial, CVS, and SVN - Proficiency with code deployment tools like CI/CD and Docker - Experience with SQL/NoSQL databases - Project management skills - Strong problem-solving abilities

You want to work with someone who has already built and scaled real products — not someone figuring it out on your project. Most web apps don’t fail because of bad ideas — they fail because they’re slow, hard to scale, or poorly built… and by the time you realize it, you’ve already lost users, rankings, and revenue. I fix that. I fix that. I help founders and teams build fast, scalable web apps using React and Next.js — or improve existing ones that are underperforming. Recently, I improved a frontend to achieve a Lighthouse score of 90+, reducing load time by 40–60%, improving Core Web Vitals, and leading to a 20–30% increase in conversions — with sales growing from $100k+ to $300k+.saving thousands in Google Ads that were previously underperforming due to poor frontend performance. With 5+ years of experience in frontend and fullstack development, I focus on building products that don’t just work — but actually perform under real-world usage. If your app feels slow, messy, or hard to scale — I can quickly identify what’s wrong and fix it. 💡 How I can help • Build fast, SEO-friendly frontends using React & Next.js • Develop fullstack applications (Next.js, Django, APIs, databases) • Turn MVPs into scalable, production-ready systems • Fix slow, buggy, or hard-to-maintain applications • Improve performance (Core Web Vitals, Lighthouse optimization) • API integration & backend connectivity 🤖 AI Integration & Modern Features • AI-powered web apps (OpenAI / LLM integrations) • ChatGPT-style interfaces in React / Next.js • AI dashboards & data-driven UI • Adding AI features to existing SaaS products • Automation workflows using AI APIs I can help you add AI features to your product without overcomplicating your stack. 📈 Recent work & impact • Improved frontend performance → Lighthouse 90+ (faster load, better SEO) • Built fullstack app from MVP → scalable production system • Optimized performance bottlenecks and improved user experience • Developed clean, maintainable architecture for long-term scalability ⭐ What clients say • “Quick to understand the problem and suggest practical solutions” • “Delivers clean, scalable code — not just quick fixes” • “Strong focus on performance and real-world impact” • “Easy to communicate and reliable throughout the project” If you’re building a product — or struggling with performance — let’s start with a small task. If you’re not satisfied, I’ll refund it. No questions asked. 🔍 Technologies & Expertise Frontend: React.js, Next.js, TypeScript, JavaScript (ES6+), Tailwind CSS Backend: Node.js, Django, REST APIs, GraphQL Database: PostgreSQL, MongoDB Focus Areas: Performance Optimization, Core Web Vitals, Lighthouse, SEO Optimization, SaaS Development, MVP Development, Dashboard Development, AI Integration, LLM APIs, ChatGPT Interfaces, API Integration, Web App Scaling, Clean Architecture

I help companies migrate from WordPress and outdated stacks into modern, high-performance, AI-ready platforms powered by Next.js, Gatsby, and custom SaaS systems — without breaking SEO or risking downtime. With 20+ years in web development and 8+ years working internationally, I combine deep engineering expertise with product strategy to deliver platforms that scale, perform, and convert. What I Do ✅ WordPress → Next.js / Gatsby Migrations Safe, SEO-preserving migrations for high-traffic websites and SaaS products. ✅ AI-Powered SaaS Development Login systems, Stripe billing, content generation, automation pipelines. ✅ Performance & Technical SEO Optimization Core Web Vitals improvements, architecture redesign, code refactoring. Recent Results - Reduced SaaS landing page load time from 6s → under 1s - Migrated high-traffic blog to Next.js with SEO rankings preserved - Built AI automation replacing 8+ hours/week of manual work - Installed modern CMS system cutting content publishing time by 50% What They Say About Me 💬 - 20+ years building web systems (since 1998) - 900+ web projects delivered - $70k+ international freelance revenue - Clients across US, Europe, and Brazil - Strong background in React, JavaScript, GraphQL, Gatsby, Next.js - Strategic mindset: I don’t just code — I architect Testimonials "This guy is a coding rockstar. I highly recommend him! :) He's also very laid-back and communicative. We'll definitely work with him again. FIVE STARS!" — Federico H., Figmenta, Milan, Italy "The market is flooded with low-experience developers, but Milton is clearly on a different level. GOAT!" — Renato Q., Creativity Block, Lisbon, Portugal "Milton is a very talented developer. I hired him several years ago and know him well. Milton's skills are top-notch. I highly recommend him." — Ryan M., Green Hat Web Solutions, Denver, USA

I'm a full-stack web developers with many years of experience working with different teams and technologies. Through the years, I had to wear many hats - from frontend developer to Linux server sysadmin. I help small design agencies to manage their servers, build their websites and keep everything secure. I focus mainly on WordPress websites and PHP web applications. I'm not afraid of working on the legacy code, I still maintain an old platform written in PHP5. So if you want to free up your development team from legacy burden, I'm the person you want to hire. I've been working remotely for more than 6 years, and I know the power of good communication.

English version for Upwork Hi! My name is Sergii, and I’m a full-stack web developer from Ukraine with 10+ years of experience in web development, mostly as a freelance developer. I specialize in WordPress, WooCommerce, custom WordPress themes, ACF-based websites, frontend development, integrations, and performance optimization. I also have experience building headless projects using Gatsby / React with WordPress / WooCommerce through GraphQL. I build different types of websites, including corporate websites, landing pages, portfolio websites, eCommerce platforms, WooCommerce stores, custom WordPress solutions, and WordPress plugins. My key strengths include: Custom WordPress theme development from scratch WooCommerce websites, custom templates, cart, checkout, and product pages Advanced Custom Fields / ACF Blocks for flexible content management Gatsby + React + Headless WordPress / WooCommerce API, CRM, payment, shipping, and third-party integrations Technical SEO implementation in the code Website speed optimization using PageSpeed Insights and GTmetrix Server setup, deployment, maintenance, and troubleshooting Clean, understandable, and maintainable code I don’t just complete tasks based on a description. I can also identify technical issues, suggest better solutions, and help choose the right architecture for a project. I pay strong attention to detail, provide realistic estimates, and focus on building websites that are not only visually accurate but also fast, stable, SEO-friendly, and easy to maintain in the long term.