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Yurii K.
$40/hr
100% Job Success
$100K+ earned
Offers consultations
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Reliable .NET Full Stack Developer for Scalable Web Solutions I’m a .NET Full Stack Developer who delivers production-ready features on time, keeps development cost-efficient, and builds scalable web solutions that grow with your business. As a Senior .NET Full Stack Developer, I design and develop secure, high-performance applications using .NET and Angular, focusing on clean architecture, scalability, and long-term maintainability. I’m a .NET Developer who aligns technical decisions with business goals. Every solution I deliver as a .NET Full Stack Developer is production-ready, reliable, and built for real users. Experience & Credentials Certified Senior .NET Full Stack Developer 8+ years of commercial experience as a .NET Developer and Tech Lead 30+ completed projects on Upwork 100+ delivered projects with my Intelvision team (last 5 years) 100% Job Success | 1900+ hours | $100K+ earned Trusted .NET Developer for Visoplan, ING+, Jincom, Kiflo, and more When clients need a reliable .NET Full Stack Developer, they come back. Core Role: .NET Full Stack Developer As a .NET Full Stack Developer, I handle frontend, backend, APIs, databases, cloud infrastructure, and DevOps. As a .NET Developer, I ensure security, performance, and scalability from day one. I work as: .NET Full Stack Developer for SaaS platforms .NET Full Stack Developer for enterprise systems .NET Full Stack Developer for MVP and startup products .NET Developer for long-term system growth Core Technologies (.NET Full Stack) .NET Full Stack .NET Developer (ASP NET Core, Web API, SignalR) Angular (enterprise SPA, NgRx, RxJS) Node.js (for hybrid architectures when needed) Every project is led by a .NET Full Stack Developer, not a generalist. Backend & Architecture (.NET Developer Expertise) As a .NET Developer, I build backend systems using: RabbitMQ, Docker, Kubernetes, Redis, GraphQL, SignalR, Elasticsearch, Hangfire, MediatR, Quartz NET, Akka NET, Autofac, Dapper, NHibernate, Swagger, FluentValidation, Serilog, NLog This is what separates a .NET Full Stack Developer from a basic coder. Frontend Development (Angular) As a .NET Full Stack Developer, I pair backend power with modern UI development: Angular, TypeScript, SPA, PWA, NgRx, RxJS, Angular Universal, NG-ZORRO, Tailwind CSS, MUI, Ant Design, Lighthouse optimization A strong .NET Developer always delivers a strong frontend. Cloud, DevOps & CI/CD (.NET Full Stack) Azure, AWS, Docker, Kubernetes, GitHub Actions, GitLab CI, Azure DevOps A real .NET Full Stack Developer owns deployment, scaling, and monitoring. Security & Authentication (.NET Developer Focus) Auth0, IdentityServer4, Azure AD B2C, OAuth 2.0, JWT, Azure Key Vault, AWS IAM Security is mandatory for any .NET Full Stack Developer. Business & API Integrations Stripe, Xero, QuickBooks, Microsoft Graph API, Salesforce, SAP, Dynamics As a .NET Developer, I build systems that integrate with real business tools. Testing & Quality xUnit, NUnit, Moq, MSTest, Karma, Jest A professional .NET Full Stack Developer ships tested code. Industry Experience as .NET Full Stack Developer SaaS platforms FinTech systems PropTech and ConTech Logistics and supply chain Custom enterprise solutions Each domain was delivered by a .NET Full Stack Developer with real production experience. Why Clients Choose Me as a .NET Full Stack Developer Deep backend expertise as a .NET Developer Strong Angular frontend delivery Clean architecture and scalability Business-oriented mindset Long-term partnership approach Whether you need an MVP, SaaS, PoC, or enterprise system, you need a .NET Full Stack Developer, not just a coder. Let’s Build Your Product If you’re looking for a reliable .NET Full Stack Developer, an experienced .NET Developer, and a partner who delivers on time, let’s talk. Your product deserves a .NET Full Stack Developer who understands scale, security, and growth.
Yurii K. has worked .
Intelvision
Associated with
Intelvision
$100K+
earned
Vadym K.
$35/hr
100% Job Success
$1M+ earned
Available now
Offers consultations
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I am a .NET full stack developer and software architect with 8+ years of experience building scalable web applications using ASP.NET Core, Angular, C#, TypeScript, Microsoft SQL Server, Azure, and modern cloud technologies. Across 35+ projects in defence, renewable energy, fintech, e-commerce, and enterprise SaaS development I have delivered systems that handle real production load, not just demo traffic. What I build as a .NET full stack developer My deepest work is in ASP.NET Core back-end development. I spent years as the lead .NET full stack developer on a platform managing thousands of wind and solar energy installations globally, processing massive volumes of real-time data, building microservices on .NET Core and Azure, and reducing critical downtime incidents by over 40% through improved monitoring and analytics. On another project I built a Loan Origination System in ASP.NET Core that automated the entire loan lifecycle from lead capture to loan issuance, integrating with HubSpot, external CRMs, and RESTful APIs on Microsoft Azure. The client went from manual processing to a fully automated fintech pipeline handling 550+ active applications, cutting processing time by 60%. ASP.NET developer work across enterprise and defence Some of my most complex work as an ASP.NET developer has been in defence and industrial sectors. I modernized a legacy web platform for a company managing 36 high-uptime naval fleet assets, warships that cannot afford downtime. The ASP.NET MVC rebuild reduced manual reporting time by 70% and enabled real-time asset tracking, secure document storage, and streamlined access to sensitive operational data. On another engagement I took over a large workplace management SaaS development project built by a single developer who had left, no documentation, weekly outages, daily hotfixes. I stabilized the ASP.NET Core back-end, eliminated the performance bottlenecks, and reduced unplanned incidents from weekly to zero within two months. ASP.NET Zero and enterprise acceleration ASP.NET Zero is my go-to when enterprise clients need multi-tenancy, role-based permissions, and audit logging without spending the first three sprints on boilerplate. I have used it to accelerate SaaS development on projects in pharma automation, workplace management software, and industrial IoT, cutting initial setup time by 3+ weeks and letting the team focus on actual business logic from day one. On average my clients ship their first production release 30% faster on ASP.NET Zero compared to building from scratch. Full-stack web development across the whole system As a .NET full stack developer I own the entire delivery, ASP.NET Core back-end, Angular or React front-end with clean web design, Microsoft SQL Server and PostgreSQL database design, and Azure infrastructure. I built a Shopify fulfillment tool in ASP.NET Core and React that reduced packing mistakes to zero and cut order processing time by 35%, integrating barcode scanning, inventory management, and connections to 8+ shipping providers. I delivered a fleet management system in .NET Core and Angular handling 1,250+ assets and 845 active rentals simultaneously, with automated reporting that saved operations teams 10+ hours per week. On the front end I work with Angular, React, TypeScript, JavaScript, Next.js, HTML, CSS, Bootstrap, and RESTful API integration, connecting them cleanly to .NET back-ends without creating maintenance nightmares six months later. C# and .NET developer engineering that goes deep Back-end development across 8 years as a .NET developer means I have seen what breaks under real load. I cut a US e-commerce platform's page load time from 8 seconds to 2, directly contributing to a 2x increase in sales. I optimize Microsoft SQL Server and PostgreSQL queries, regularly reducing query execution times by 60-80%, design database schemas that support complex reporting, and build API integration layers connecting .NET systems to CRMs, ERPs, payment gateways, and third-party platforms. I work with Node.js for event-driven services, TypeScript to keep large codebases maintainable, and Python or PHP when projects need scripting layers alongside the core .NET stack. For web development infrastructure I use Microsoft Azure and Amazon Web Services, Docker containers, microservices architecture, and CI/CD pipelines that reduced deployment time by 50% for several enterprise clients. Why clients come back I have worked with clients in Germany, the USA, Australia, the UK, Norway, Denmark, and the Netherlands across renewable energy, defence, fintech, e-commerce, and industrial IoT. What stays the same: I ask the right questions before writing the first line of code, flag problems early, and deliver .NET full stack applications that work in production, not just in development. If you are scaling a SaaS product, modernizing a legacy system, or need a .NET full stack developer your team can build on, let us talk.
Vadym K. has worked .
Eastoner
Associated with
Eastoner
$500K+
earned
Yuri N.
$55/hr
100% Job Success
$400K+ earned
Available now
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👋 My name is Yuri — I'm Upwork's #1 iOS developer in Ukraine. I'm the founder and lead engineer at Helicon, an award-winning mobile development team. Together, we bring decades of experience in building software with a mission of delivering exceptional results at an impressive pace. Are you looking to create an app and need an expert developer who speaks fluent English? I specialize in: — iOS development (UIKit, SwiftUI) — macOS development (Cocoa, SwiftUI) — Vision Pro, Apple Watch, and Apple TV apps — Product management & expert advice for software projects. At Helicon, we are skilled in most of the well-known Swift frameworks as well as third-parties. See the full list below: — UI Frameworks: SwiftUI, UIKit, Combine, RxSwift, The Composable Architecture (TCA) — Backend & Auth SDKs: Firebase, AWS Amplify, Supabase Swift, Auth0, Appwrite — 3D Frameworks: RealityKit, ARKit, SceneKit, Model I/O, Quick Look — Networking Libraries: URLSession, Alamofire, Moya, Apollo iOS, gRPC — Image & Animation Libraries: Kingfisher, SDWebImage, Nuke, Lottie, AVFoundation — Data Persistence Libraries: SwiftData, Core Data, Realm, GRDB, KeychainAccess — Analytics & Monitoring Tools: Firebase Analytics, Mixpanel, Amplitude, Sentry, Branch — Payments & Subscription SDKs: StoreKit, RevenueCat, Adapty, Stripe, Paddle — Developer Tools & Dependency Managers: Swift Package Manager, CocoaPods, Carthage, SwiftLint, SnapKit — Device & Platform Frameworks: CoreLocation, MapKit, HealthKit, CoreBluetooth, WidgetKit I can also assist you with app distribution, marketing, and launch using: — App Store Connect — Apple Developer Platform — Apple Search Ads — Meta Ads Manager (f.k.a. Facebook Ads Manager) My team has first-hand expertise in applying AI models like Claude Opus and GPT-5 to the mobile development workflow, allowing us to offer a great turnaround time for your project without ever sacrificing the human touch. Advanced English proficiency is a requirement for every developer working at Helicon. We also communicate freely, Ukrainian, Polish, and Russian. Don’t hesitate to send me a quick message and we will go over your idea in detail over a video call or through Upwork chat!
Yuri N. has worked .
Helicon
Associated with
Helicon
$100K+
earned
Hanna B.
$35/hr
100% Job Success
$20K+ earned
Available now
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Hi! 💫Living the Shopify ecosystem daily. I am not interested in just building or optimizing Shopify stores and Shopify apps - I breathe life into them with my proactive approach, transforming your digital presence into a high-converting masterpiece. I am a Shopify developer who actually cares if your store sells, not just if it looks nice. Shopify app developer who's been through Shopify's strict review process enough times to write clean code from the start - there will be no bloated JS and no surprises. What I’ve achieved as a Shopify developer so far: 🟢 developed 57 Shopify stores, including 28 custom Shopify store setup, 20 on them are on Shopify Plus | 20 stores built where I was converting Figma designs into Shopify pages. My clients, who are fashion, supplement, lifestyle, pet supplies and other brands, earned around 50M$ after my Shopify development assistance. 🟢 developed 45+ Shopify apps. Being a certified Shopify app developer, I build public and custom apps that pass the strictest "Built for Shopify" standards with my extensive skill in Shopify APIs. 🟢 mastered the art of Shopify migration. I’ve completed 27 Shopify migrations - from Wordpress WooCommerce, Magento, and WordPress to Shopify. As your Shopify developer, I guarantee a seamless move where your SEO authority and customer data remain untouched. 🟢 developed high-performance solutions. As a Shopify developer liquid is the only framework I always use to customize a Shopify store. For a real Shopify expert, it’s a foundation of their work. In my 7 years as a Shopify developer, I’ve seen too many entrepreneurs waste money fixing "cheap" mistakes. Whether you’re just starting with Shopify Basic/Advanced or scaling to Shopify Plus, I make sure your tech setup is an asset from day one, not a constant drain on your wallet. As a Shopify developer, I’ve learned that the difference between a storefront and a powerhouse lies in the architecture. Over the last 5 years, I’ve seen how many businesses hit a "glass ceiling" because of poor technical execution. My mission is to ensure that your Shopify store ecosystem is a driver of growth, not a bottleneck. Core services delivered by me as a Shopify expert: ☑️ Enterprise Shopify Plus Builds: Full-cycle execution for high-scale brands needing custom logic and API integrations (ERP, CRM, SaaS). ☑️ Public & Custom Shopify App Development: From private integrations to apps listed on the Shopify app Store using the latest React Router stacks. ☑️ Bespoke Shopify Theme Development: Converting Figma design into high-converting Shopify theme. A Shopify developer must ensure every pixel serves the conversion - like a proper Shopify designer. ☑️ Shopify developer - Performance and Audit: Deep-dive technical audits and "trouble-shooting." As a Shopify developer, I regularly boost conversion rate metrics by up to 120% through advanced performance tuning and tech debt fixing. ☑️ Shopify developer - Headless Experience: Within Shopify hydrogen theme stack, I am specialized in modern stacks for brands that want to push the boundaries of the Shopify ecosystem. Why trust your brand to me as a seasoned Shopify developer? 1 Strategic Thinking. I don't just "fix bugs" - I look at your store through the lens of a Shopify developer expert who understands Shopify CRO, Shopify SEO, and user psychology. 2 No Technical Debt. Many Shopify developers build for today; as a Shopify web developer, I build for your future. I use Git-based workflows and scalable processes so your site can grow with you. 3 Always Transparent Communication. You won't hear "dev-speak" from me. I communicate as a business partner and a Shopify expert who focuses on what actually moves the needle for your ROI. My Tech Stack (Mastered by a Shopify developer seo marketing): Shopify Plus | Shopify expert | Marketplace specialist | Shopify App Development | Headless Shopify | Shopify SEO | Shopify designer | Liquid developer | React | Shopify Theme Development | Shopify 2.0 | GraphQL | Node.js | Shopify Migration | Shopify Redesign | Figma to Shopify | Shopify expert | Tailwind | Shopify CRO | Wordpress to Shopify migration | Shopify marketing | Migration to Shopify | Shopify custom coding Shopify web development | Shopify cro | Shopify developer cro | Kajabi | HTML to Shopify | Liquid | Shopify web developer I know you are looking for a partner who takes as much pride in your Shopify store / app stability as you do in its growth. Let’s talk. My goal as a Shopify designer and Shopify developer is to strip away the technical noise so you can focus entirely on your vision. Send me a message with your challenges, and we’ll build the high-performance foundation your brand deserves. Just elite execution.
DevIT
Associated with
DevIT
$6M+
earned
Andrii C.
$35/hr
100% Job Success
$200K+ earned
Available now
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As a WordPress developer I build websites that generate revenue - not just look good. One WooCommerce store: $0 to $500K in 3 months, 20+ targeted leads daily. More results: 🚀 Ecommerce Store $0 to $500K Revenue in 3 Months Built a WooCommerce store from scratch, optimized for speed and conversions, and launched advertising that brings 20+ targeted leads daily with an average order value of $4,000–$5,000. 3 months to deliver. 3 months after launch - $500K in revenue. Still growing. Still working together. → This is what happens when development, optimization, and advertising work as one system ⚡ WooCommerce Speed Optimization Cut load time from 6s → 2s and TTFB from 2s → 0.5s Reduced DB queries by 66% (600+ → ~200) → Faster pages, smoother checkout, better conversions Want similar results? Let’s talk ⭐️⭐️⭐️⭐️⭐️ What clients say about me: “Very experienced and very pleasant to work with. He is keeping his promises and is a reliable person and has also an experienced team around him. Good price - proposition value. For sure I will hire him for my next project. “ Still here? Let’s continue! 👇 📦 Services I Provide as a WordPress Developer ✔️ WordPress Website Development – as an experienced WordPress Developer, I create custom, scalable websites and complex systems with a strong focus on WordPress Website Design and business growth. ✔️ WooCommerce Development – custom product builders, checkout optimization, advanced filtering, and scalable eCommerce architecture. ✔️ WordPress Elementor & WordPress Customization – advanced theme and template customization for high-performing WordPress websites. ✔️ WordPress Developer ACF – Advanced Custom Fields implementation, custom post types, and flexible content architecture ✔️ WordPress Plugin Developer – I build secure, scalable custom plugins, API integrations, automation workflows, and WooCommerce enhancements. ✔️ WordPress Developer API – REST API integrations with CRMs, ERPs, payment gateways, and third-party services ✔️ Performance Optimization – Core Web Vitals, GTMetrix analysis, WP Rocket, and WordPress Speed Optimization. ✔️ WordPress SEO Optimization 🔍 – code-level SEO, structured data, and technical optimizations for search engines. 🔧 What I Actually Do I'm a full-stack web developer and WordPress developer, focused on building high-performance, scalable WordPress websites. My work covers WordPress development, WordPress customization, WordPress Website Design, and WordPress Speed Optimization, ensuring your website is fast, stable, secure, and SEO-friendly, going far beyond visual Elementor builds. 🎨 Web Design & WordPress Theme I handle web design, WordPress Website Design, and WordPress theme development from scratch or based on Figma/XD mockups. Clean HTML, CSS, JavaScript, and jQuery ensure pixel-perfect, responsive results across all devices. 🧩 Custom Plugin Development As a WordPress Plugin Developer, I create secure, scalable wordpress plugin solutions using php & OOP: API integrations Automation workflows Advanced woocommerce features 🐞 Bug Fixing & Code Refactoring I fix critical issues, clean up legacy code, and resolve plugin/theme conflicts to ensure a stable wordpress website. ✅ QA & Stability Structured QA processes guarantee your wordpress website works reliably after updates or scaling. 🛒 WordPress e-Commerce, MVP & SaaS As a woocommerce developer I build conversion-focused wordpress e-commerce systems: Custom product configurators Optimized checkout flows Advanced search & filtering Scalable woocommerce architecture WordPress migration handled cleanly - files, database, domain transfer without downtime. ⚡ Performance, Website Optimization & SEO Core Web Vitals improvements (TTFB, DB queries, critical CSS) GTMetrix performance tuning WP Rocket setup & WordPress Speed Optimization Clean wordpress seo plugin configuration for SEO-friendly code 🔐 WordPress Security & Recovery WordPress security audits (WPScan, SAST) Access control, 2FA, WAF (Cloudflare) Malware removal & recovery 🔗 Full-Stack & APIs PHP + MySQL/PostgreSQL/MongoDB REST API integrations (CRM/ERP systems) Headless WordPress with React/Vue if needed ☁️ DevOps & Cloud CI/CD (GitHub Actions / GitLab CI) Docker environments AWS (S3, Lambda, CloudFront, RDS) Zero-downtime deployments 🌍 Industries I Work With Retail, Logistics, Financial Services, Healthcare, Travel & Hospitality, HR, Finance, Accounting, Education, E-learning, Consumer Goods, Business Services, Real Estate 🤝 Long-Term Support by WordPress Developer More than 80% of clients stay long-term. I provide: ongoing WordPress website maintenance, performance monitoring & optimization, continuous improvements, fast response for urgent fixes. 🚀 What You Get: stable, scalable WordPress sites, WordPress Speed Optimization for conversions, automated workflows with custom plugins, clean maintainable code, and reliable long-term support from a skilled WordPress Developer. Let`s chat:)
Andrii C. has worked .
Webcoder Team
Associated with
Webcoder Team
$200K+
earned
Andrey K.
$30/hr
100% Job Success
$500K+ earned
Start of list.
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Web development is what I genuinely enjoy and have been doing professionally for more than 12 years I specialize in building reliable, scalable, and maintainable web applications with a strong focus on clean architecture and long-term support. I’m a senior PHP developer who values code quality, clear communication, and predictable delivery ⚙️ I write clean, efficient, and well-structured code and follow best practices and design patterns. What I work with most often: 🔹 Custom web applications and business systems 🔹 RESTful APIs and third-party integrations 🔹 E-commerce platforms and payment integrations 🔹 Long-term projects with ongoing development and support Core technologies and expertise: ✅ PHP (OOP, Design Patterns, TDD, REST APIs) ✅ Laravel (Nova, Filament) ✅ Symfony ✅ Vue.js / React / TypeScript ✅ MySQL / PostgreSQL ✅ JavaScript (Highcharts, Three.js, Maps, Clouds) ✅ HTML5 / CSS3 (Bootstrap, SCSS, Tailwind) ✅ AI Models and Agents (GPT, Gemini, Claude, Local LLM) Integrations and platforms: 🔗 Payment systems: Stripe, Worldpay, PayPal, eBay 🔗 APIs: Google, Instagram, OpenAI and other third-party services 🔗 E-commerce feeds: Google Shopping, Amazon, eBay How I work: 📌 Full software development lifecycle experience 📌 Clear communication and regular progress updates 📌 Transparent estimates and task breakdown 📌 Focus on long-term maintainability, not quick hacks I’m open to interesting projects and long-term cooperation 🤝 If needed, I’m also open to a small test task to demonstrate my approach and code quality. Let’s turn your idea into a solid, working solution 🚀
Andrey K. has worked .
SBS Team
Associated with
SBS Team
$8M+
earned
Bohdan K.
$40/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
Start of list.
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Backend and full stack systems that handle real money, real transactions, and real scale. 🏦 $6.8M seed funding raised by a product built on my backend infrastructure 🔗 15+ projects shipped on Upwork ⚙️ 7+ years building APIs, payment flows, and Web3 integrations 🚀 From architecture to production - clean, maintainable, built to last Senior Backend and Full Stack Developer specializing in FinTech infrastructure, blockchain integrations, and scalable API systems. I work with startups and established teams that need backend done right: payment flows, crypto wallets, KYC/AML pipelines, DeFi protocols, and high-load REST and GraphQL APIs. My core stack is Node.js, Express, and NestJS. I've shipped production systems handling real financial transactions across Stripe, ACH, Apple Pay, Google Pay, Fireblocks, Coinbase API, and Bridge.xyz. On the blockchain side: Solidity, Ethers.js, Web3.js, Polygon, Ethereum, Solana, Gnosis Safe, and Moralis. I also cover the full stack with React, Next.js, and TypeScript - no handoff gaps, faster delivery. 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬 𝐈'𝐯𝐞 𝐛𝐮𝐢𝐥𝐭: Blockchain FinTech Platform - a Spanish blockchain-first fintech platform for crypto and fiat asset management that raised $6.8M in seed funding. Built backend infrastructure for multi-wallet management, crypto tax calculation, team collaboration features, and crypto-friendly banking integration. Stack: NestJS, Moralis, WalletConnect, Web3React, Snapshot. Debt Collection & Payments Platform - a debt collection platform with comprehensive payment infrastructure. Integrated Stripe, ACH, Apple Pay, Google Pay, Buy Now Pay Later, and partial payment flows. Connected Salesforce CRM, QuickBooks, and Xero. Built data visualization dashboards with Recharts for real-time financial reporting. DeFi Prime Brokerage - service built on Solana, powered by Serum's on-chain order book infrastructure. Responsible for API architecture, blockchain integration, and frontend connectivity. 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: - Scalable REST and GraphQL APIs with Node.js, Express, NestJS - Blockchain integrations: Ethereum, Polygon, Solana, smart contracts - Crypto wallet infrastructure: Fireblocks, Coinbase API, Gnosis Safe, Moralis - Payment systems: Stripe, ACH, Apple Pay, Google Pay, BNPL, crypto-fiat - KYC/KYB flows: Sumsub, identity verification pipelines - AML compliance: Elliptic, transaction monitoring - DeFi protocols, DEX integrations, dApp backends - FinTech infrastructure: Bridge.xyz, Rain.xyz, Kraken API - Database architecture: MongoDB, PostgreSQL, Supabase, Firebase - Cloud infrastructure: AWS, Azure, Google Cloud, CI/CD pipelines - Full stack coverage: React, Next.js, TypeScript 𝐓𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤: - Backend: Node.js, Express.js, NestJS, REST API, GraphQL - Frontend: React.js, Next.js, TypeScript, Tailwind CSS - Blockchain: Solidity, Ethers.js, Web3.js, Polygon, Ethereum, Solana FinTech: Fireblocks, Coinbase API, Kraken, Gnosis Safe, Bridge.xyz, Rain.xyz, Moralis, Elliptic, Sumsub - Payments: Stripe, ACH, Apple Pay, Google Pay, BNPL Databases: MongoDB, PostgreSQL, Supabase, Firebase - Infrastructure: AWS, Azure, Google Cloud, CI/CD, Docker I've worked across roles: Senior Backend Developer, Full Stack Developer, Web Developer, Node.js Developer, NestJS Developer, Express Developer, Blockchain Developer, Web3 Developer, DeFi Developer, FinTech Developer, Full Stack Developer React Node, API Developer, Crypto Wallet Developer, Payment Integration Developer, Backend Architect. The backend is where products either scale or break. Let's make sure yours scales. Message me, and we’ll review your project together.
Bohdan K. has worked .
Stubbs  🏆 Top rated plus React agency
Associated with
Stubbs  🏆 Top rated plus React agency
$1M+
earned
Yevhen T.
$30/hr
100% Job Success
$70K+ earned
Available now
Offers consultations
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Hi 👋🏻 I'm a Senior Full Stack Developer with over 10 years of experience building SaaS platforms, AI-powered applications, custom web applications, MVPs, automation systems, REST APIs, and scalable cloud-based software solutions. I help startups, founders, and businesses turn ideas into reliable products that scale. Whether you need a new SaaS platform, AI integration, custom backend development, API architecture, or modernization of an existing application, I can take ownership from planning to deployment. What I can help you with💻 ✅ SaaS Development & MVP Development ✅ Custom Web Application Development ✅ AI Integration & AI-Powered Applications ✅ Backend Development (PHP, Laravel, Node.js) ✅ Frontend Development (React, Next.js, Vue.js) ✅ REST API Development & Third-Party Integrations ✅ Automation Systems & Business Process Automation ✅ Performance Optimization & Application Scaling ✅ Cloud Deployment & DevOps Core Tech Stack🛠️ ▪️Backend: PHP, Laravel, Node.js, NestJS, CodeIgniter ▪️Frontend: React, Next.js, Vue.js, Nuxt.js, JavaScript, TypeScript ▪️Markup & Styling: Tailwind CSS, Bootstrap, Bulma, HTML5, CSS ▪️Databases: PostgreSQL, MySQL, Redis, MongoDB, SQLite ▪️AI & Automation: OpenAI API, Claude API, AI Agents, RAG Systems, LLM Integrations, Workflow Automation ▪️Cloud & DevOps: AWS, Docker, CI/CD, GitHub Actions, DigitalOcean, Vercel, NGINX Why clients work with me🫱🏻‍🫲🏽 ✔ Clean, maintainable, scalable code ✔ Strong software architecture and problem-solving skills ✔ Fast communication and transparent progress updates ✔ Business-oriented approach focused on outcomes ✔ Ownership mindset – I care about the success of your product, not just completing tasks Strategic Consultation🎁 Need help validating an idea, planning architecture, choosing a tech stack, scaling infrastructure, or implementing AI solutions? I provide practical guidance that helps reduce technical risks and avoid costly mistakes before development begins. 📩 Feel free to invite me to your project. I usually respond quickly. If you're looking for a developer who combines strong engineering skills with product thinking and business understanding, let's talk!
Yevhen T. has worked .
Sergii M.
$55/hr
99% Job Success
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🏆 Top Rated Plus (Top 1% Upwork talent) ☕ Started working as web developer in 1999 🔥 Expertise in front-end, back-end, and server administration 🔐Always keeping in mind security and productivity aspects 🎓Master and bachelor degrees in computer science Let's make your project successful! 🚀🚀🚀
Sergii M. has worked .
Arthur C.
$30/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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I build premium, lightning-fast WordPress and WooCommerce websites from Figma, XD, and PSD designs. Strictly custom development — no bloated page builders (Elementor, Divi, etc.), just clean code, ACF Pro, and native Gutenberg. What I do: → Figma / XD to Custom WordPress — pixel-perfect, lightweight, and scalable themes built from scratch. → ACF Pro & Custom Post Types — tailored back-end architecture for complex data and easy management. → Native Gutenberg Blocks — custom React/PHP blocks that empower your team to edit content safely without breaking the design. → WooCommerce — custom product layouts, cart flows, and conversion-optimized checkouts. → GSAP Animations & Interactive UI — bringing static designs to life with smooth, high-performance front-end logic. → Core Web Vitals & PageSpeed — strict performance optimization achieving 90+ scores on mobile and desktop. My Track Record: 10+ years of dedicated Custom WordPress, WooCommerce, and Front-End development. Top Rated Plus | 100% Job Success Score | $100K+ earned across 62 completed projects. I partner with design agencies, B2B companies, and e-commerce brands who need a reliable Senior Developer. I don't rely on third-party site builders; I deliver clean architecture, strict deadline adherence, and a stress-free handoff. Let's discuss your next project!
Arthur C. has worked .