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Ivan L.
$25/hr
100% Job Success
$10K+ earned
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Hello, I am a full-stack JavaScript developer with over 2 years of commercial experience in web development. I have worked in various domains, from healthcare to marketing. I have profound knowledge of React.js and Node.js and their most popular frameworks — Next.js and Nest.js, respectively. I have created applications from scratch and helped my clients deploy them using different services such as Vercel, AWS, GCP, and Heroku, as well as worked on existing projects with evolving codebases. My technologies of choice when developing full-stack applications are React.js, Nest.js, Prisma ORM, PostgreSQL, and Docker for comfortable development. When working on a project solo, I like to communicate with the client to achieve exactly what they have in mind, and when working in a team, I like to contribute as much as possible while improving myself and the working environment. My favorite part of being a web developer is learning new technologies and growing as a specialist.
Maksym B.
$39/hr
100% Job Success
$100K+ earned
Available now
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🥇As 7+ years experienced Python Full Stack developer, I delivered 50+ projects for 30+ clients - AI focused web applications, SaaS, MVPs, POCs, analytical platforms, CRM/ERP systems, and many AI-driven development projects built with Python Full stack . 𝐖𝐡𝐲 𝐦𝐞: 🚀50+ Delivered projects in Python Full Stack development 🔝30+ happy clients from the USA, UK, Germany, and more 🔥7+ years in Python full stack development as a Python Full stack developer, fullstack developer, and backend engineer 👨🏼‍💻3 years in business intelligence 👥Operate with small but result-driven team of Python full stack developers, AI developers, and UI/UX designers 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤: 1️⃣ Discovery & Analysis We map your goals and plan Python full stack architecture, AI integration, and API structure. 2️⃣ UX/UI Design Simple layouts that fit AI chatbots, AI agent flows, AI receptionist interfaces, and classic dashboards. 3️⃣ Development As python full stack developers, we build Python full stack apps using Python Django, Python FastAPI, Python Flask, JavaScript, React, Vue, and REST API. Strong focus on AI development, building AI agent development, AI chatbot development, AI integration, LLM flows, natural language processing, deep learning models, and Python machine learning. 4️⃣ Optimization & QA Python full stack optimization, API performance, and testing for AI systems. 5️⃣ Release & Support Stable Python full stack deployments, AI model monitoring, and API maintenance. 𝐌𝐲 𝐭𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤: Front-end: Vue, React, Next.js, JavaScript, TypeScript, HTML, CSS Back-end: Django, FastAPI, Flask, Python, Aiohttp, Golang Databases: PostgreSQL, MySQL, SQLite, MongoDB, DynamoDB Tools: Docker, Kubernetes, AWS, Celery, Redis, Git, Grafana, Figma P𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗜 𝗪𝗼𝗿𝗸𝗲𝗱 𝗢𝗻 🔸 CRM & ERP Systems Built Python full stack CRM and ERP with Python Django, Python REST API, and React/Vue. Added AI automation for workflows, AI data extraction, AI text tagging, and simple natural language processing features. Used Docker, PostgreSQL, and Python full stack development for stability. 🔹 Management Platforms (LMS, EMS, WMS) Created systems using Python Full stack FastAPI, Python Django, and Next.js. Integrated AI scheduling, AI agents for ticket sorting, and natural language processing search. Stack used: Redis, DynamoDB, MongoDB, Python API development, Python automation. 🔸 SaaS Platforms Developed SaaS products using Python Full stack Django REST, Python FastAPI, and AWS. Added AI chatbot modules, AI content generation, AI onboarding, AI integration with LLMs, and Python machine learning models. Used AWS Lambda and Python microservices. 🔹 Marketplaces Built marketplaces with Python Django and React for real estate, fintech, and ecommerce. Added AI recommendations, AI search, natural language processing filters, and AI scoring. Used Python web scraping for data intake and Elasticsearch for fast search. 🔸 MVPs and POCs for Startups Delivered lightweight MVPs using Python Flask, Python FastAPI, React, and SQLite. Added small AI chatbot flows, AI data cleanup, and LLM summaries. Used Kubernetes and Python full stack workflows. 🔹 Web Applications Built portals, dashboards, booking apps, and ecommerce platforms with React, Vue, Next.js, and Python backends. Used Python Flask, Python Aiohttp, Python FastAPI, and Golang. Added AI receptionist flows, AI chatbots, AI NLP search, and small deep learning models for images. Included Python web scraping modules and Python API integration. 🔥 AI Projects as Python Full stack developer: 🤖 AI Chatbots & AI Agents Built AI chatbot systems and AI agent development flows using Python FastAPI, Python Django, and ChatGPT API Integration. Features included: natural language processing, real-time API calls, Python machine learning scoring, and LLM-driven responses. 🧠 AI Content Automation Created AI automation tools for content generation using Python LLM pipelines, Python full stack logic, and AI integration with third-party APIs. Used deep learning models, vector search, and Python web scraping for structured data. 🗂 AI Document Processing Developed AI document extraction tools with Python machine learning, OCR, natural language processing, and Python fullstack dashboards. Included Python background workers and Python REST API layers. 🏪 AI Receptionist & AI Support Systems Built AI receptionist flows using Python FastAPI, Python async systems, and LLMs. Integrated voice-to-text, AI message routing, and custom Python API development. 👉 Message me or click Invite - I can walk you through a similar project I’ve already delivered and help you build yours.
Maksym B. has worked .
Neural Dynamics Web
Associated with
Neural Dynamics Web
$100K+
earned
Dima O.
$75/hr
100% Job Success
$1M+ earned
Available now
Offers consultations
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Hi, I’m Dima - Craft CMS Verified Partner, AI Agent Developer & Full-Stack Web Engineer. 🔥 𝐅𝐫𝐞𝐞 𝐀𝐈 & 𝐂𝐌𝐒 𝐀𝐮𝐝𝐢𝐭 I’ll review your platform, website, or internal workflows and identify opportunities for AI agents, automation, performance improvements, and CMS optimization. You'll receive practical recommendations, architecture suggestions, and a roadmap you can actually execute. Top Rated Plus on Upwork with a 100% Job Success Score and long-term contracts. I help companies build scalable websites, SaaS products, AI-powered workflows, and enterprise-grade AI agent systems. How I can help: 📍AI Agents & AI Automation • Custom AI agents for support, operations, sales, and internal teams • Multi-agent systems using LangGraph, CrewAI, AutoGen • OpenAI, Claude, Gemini integrations • RAG-powered assistants connected to company knowledge bases • Memory systems, vector databases, and contextual workflows • Tool-calling agents that interact with APIs, CRMs, CMSs, databases, and third-party services • AI workflow automation with n8n, Make, Zapier, and custom orchestrators • AI copilots embedded directly into SaaS products and customer portals 📍CMS & Web Development • Craft CMS / Craft Commerce (custom modules, headless, GraphQL, multi-site, migrations) • WordPress (custom themes, plugins, Gutenberg, WooCommerce) • Directus, Shopify, BigCommerce • Laravel and Node.js applications powering content-heavy and business-critical systems 📍Full-Stack Development • React, Next.js, Gatsby • Vue.js, Nuxt • TypeScript, JavaScript • PHP (Laravel) • Node.js (Express) • REST APIs, GraphQL APIs • Redis, MySQL, MariaDB, MongoDB, DynamoDB 📍Performance & Infrastructure • Core Web Vitals optimization • Lighthouse & Accessibility audits • AI-assisted performance monitoring • AWS (EC2, RDS, CloudFront, ELB, CloudWatch) • Docker, Vercel, Netlify • CI/CD pipelines and scalable cloud deployments Selected Projects & Results 💥 Delight AI - Enterprise AI Agent Platform Enterprise AI agent platform built by Sendbird. Worked on AI-powered customer engagement workflows, scalable frontend architecture, API integrations, and enterprise-grade user experiences. The platform enables businesses to deploy AI agents across support, customer service, and operational workflows while maintaining performance and reliability at scale. Tech: React, Next.js, TypeScript, AI integrations, enterprise SaaS architecture. 💥 Travelessence - Multi-Regional Travel Brand Managed 10+ domains, fixed HubSpot synchronization issues, improved Lighthouse performance by 35%, and streamlined marketing analytics across the entire ecosystem. 💥 Built Robotics - Industrial Robotics Leader Implemented complex frontend experiences from Figma designs, optimized animations and rendering performance, and delivered smooth interactions across devices. 💥 ArchLynk - Global Enterprise Platform Migrated large-scale content systems, integrated HubSpot and Greenhouse, improved Core Web Vitals, and supported enterprise-level security and compliance requirements. Why clients hire me • Strong combination of AI, CMS, and full-stack engineering • Able to design architecture and build production-ready solutions • Experience with enterprise SaaS, AI assistants, automation, and customer-facing platforms • Clear communication and practical recommendations • Focus on business outcomes, scalability, and maintainability Tech Stack AI Agents, OpenAI, Claude, Gemini, LangGraph, CrewAI, AutoGen, RAG, Vector Databases, Pinecone, Weaviate, Qdrant, LangChain, AI Automation, n8n, Zapier, Make, Craft CMS, WordPres, Laravel, Node.js, React, Next.js, Vue.js, TypeScript, AWS, Docker, GraphQL, Redis, MongoDB, MySQL, PostgreSQL Have an AI agent idea, CMS project, SaaS platform, or automation challenge? Let's discuss the fastest way to get it into production.
Dima O. has worked .
Wideweb
Associated with
Wideweb
$1M+
earned
Michael C.
$27/hr
98% Job Success
$500K+ earned
Available now
Offers consultations
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If you want “no rework” engineering: I am Full Stack Developer React Node (Senior) with ownership, speed and quality ✅ 𝟏𝟑,𝟎𝟎𝟎+ 𝐡𝐨𝐮𝐫𝐬 𝐰𝐨𝐫𝐤𝐞𝐝 with a strong focus on business outcomes and quality ✅ 𝟑𝟎+ 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝, turning ideas into working software from start to finish ✅ 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 𝐒𝐜𝐨𝐫𝐞 on Upwork - Expert-Vetted (Top 10 Worldwide) Hey, I’m 𝐌𝐢𝐜𝐡𝐚𝐞𝐥 - a business-oriented software engineer, senior full stack developer. As a full stack software engineer I help startups and SMBs turn their ideas into valuable digital products. Fast, stress-free, and with full delivery ownership. I also work as a React developer / Front end developer (Front end developer React) and a backend developer on node.js (node) - often in MERN stack and full stack node.js setups. Day-to-day I build full stack node.js react products. ⭐⭐⭐⭐⭐ "I never write reviews for anything, but Michael and his team were just so great that I had to. From the very beginning, Michael stood out with how organized, responsive..." - Chris, $16K+ full stack react node project ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 which I have expertise as a Full stack node.js react developer ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Backend: Node, Express, Fastify, PostgreSQL, MongoDB ▸ Frontend: React, Next ▸ Mobile: React Native, Flutter, Swift, Kotlin ▸ Design: SaaS & Product Design, Web & Mobile Interfaces ▸ DevOps: AWS, Azure, GCP, Vercel ▸ CMS: Contentful, Strapi, Sanity I deliver end-to-end web apps as a full stack react developer, combining clean UI work with reliable backend architecture. On the server side I work as a full stack developer node / full stack developer node js, building APIs, auth, and integrations; on the client side I build full stack react interfaces and full stack react js components using javascript, react, and nextjs. When a product requires a unified stack, I seamlessly connect frontend and backend using react node, and I’m fully comfortable stepping into full stack developer mern projects. This approach reflects true react full stack delivery - I take full ownership as a react full stack developer, ensuring features are scalable, maintainable, and production-ready. When needed, I step in as CTO and software project manager (and sometimes an ERP consultant for internal ops): architecture, roadmap and execution- plus business consulting focused on outcomes, timelines, and budgets. I’m comfortable in production: database design, migrations, performance, and dba-style care; nginx basics; payments with stripe; integrations with shopify; AI features via openai. I’ve shipped niche verticals too - med spa platforms, web3 apps, trading software dashboards, and even website development perfume projects. I’ve also implemented playful mechanics like a coin flip while keeping compliance in mind (including gambling-related UX constraints). ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐡𝐚𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡 as Full stack Developer React Node ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Logistics & Supply Chain ▸ Fintech & Crypto ▸ Health & Wellness ▸ Food & Restaurant Management ▸ Real Estate ▸ Social Media ▸ Education & E-Learning I ship modern website work as a web developer / full stack web developer / full stack website developer, support CMS builds as a wordpress developer (front end wordpress) or with drupal. I also deliver outside JS when it fits: laravel and full stack developer laravel (including laravel vue), ruby on rails, python work and python full stack developer engagements; plus enterprise builds in full stack .net and senior full stack .net. I collaborate closely with ui ux / ui/ux teams - sometimes acting as a ui ux web designer partner, pairing with a ux designer. I can also help with intercom setup and intercom developer work. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ My expertise as a Mobile App Developer / Full stack software developer ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I build production-ready apps with react native (as a react native developer / react native full stack developer) and can also deliver via flutter full stack developer workflows when it fits the product. I’ve supported niche requirements too, including qt developer, revit developer, and xamarin developer tasks when needed. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📩 LET’S CONNECT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ If you want a calm, low-risk full stack engineer / full stack react node who can take ownership from idea → production, message me. No pitch decks, just pure value 𝐖𝐚𝐫𝐦 𝐑𝐞𝐠𝐚𝐫𝐝𝐬, 𝐌𝐢𝐜𝐡𝐚𝐞𝐥
Michael C. has worked .
Essensus
Associated with
Essensus
$50K+
earned
Oleksandr V.
$32/hr
100% Job Success
$200K+ earned
Available now
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Laravel developer building B2B SaaS platforms and web marketplaces for 7+ years. Top Rated on Upwork. 100% JSS. 7,000+ hours billed. $200k+ earned. Any bug in my code is fixed at no extra cost - for as long as your platform is live. That's the warranty I give every client, and it's why I've kept a 100% satisfaction rate across 32 jobs. Platforms I've shipped: Oscar Yankee Wings - aviation training SaaS (Denmark): multi-role dashboards for Head of Training, Operations, Instructor, Accountant, Student, Safety Manager; logbook system compatible with EASA standard; Dropbox integration; Laravel 8→11 upgrade with zero disruption to live users Defero - AI-driven scoring and recommendation platform (Norway): DynamicYield-based recommendation engine for personalized decision flows; gamification layer; scoring algorithm; full SaaS dashboard with admin panel and API integrations AdSplash - MarTech multi-platform data aggregator (USA): dashboards pulling from Google, YouTube, Facebook, Instagram, AppStore, Snapchat within a single interface; payment wallet integrations; role-based permissions; super-admin architecture UnderTheRadar - subscription research platform with tiered access (Australia): subscription access control with tiered membership plans; interactive portfolio manager; full dashboard rebuild, QA cycle, and production deployment MyMyCars - automotive marketplace (Ukraine): rotation system, test drive booking, AI recommendation engine for similar/competitive car models, Elasticsearch, automatic data filling via state database API integration A-link - Marketing automation SaaS (Malta): link builder, Ahrefs analysis, dashboard, filtration system, Stripe integration; Laravel + Vue.js + PostgreSQL Carma - multi-step approval workflow platform (Saudi Arabia): OTP SMS auth, document upload pipeline, financial analysis integration, end-to-end request submission and approval workflow, payment infrastructure Dance Planet - E-Commerce + ERP platform (Ukraine): multi-role booking system, supply chain management, selling automation; Laravel + Vue.js + Nuxt.js + MySQL Stack: Laravel, PHP, Symfony, PostgreSQL, MySQL, Vue.js, React, JavaScript, Node.js, HTML5, CSS, Bootstrap, REST API, Git, Docker, Redis, Stripe, DigitalOcean, Livewire What working with me looks like: architecture scoped before a single line of code is written. Daily async updates. Clean, documented, production-ready code. 30+ hours/week. Flexible on timezone. Lifetime warranty included on every project - any bug in my code, I fix it. No invoice. No argument. That's been my standard for 7 years. Building a B2B SaaS or marketplace? Send me a message.
Oleksandr V. has worked .
SIA "Snotor"
Associated with
SIA "Snotor"
$300K+
earned
Roman S.
$30/hr
100% Job Success
$80K+ earned
Available now
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I'm a WordPress developer and WooCommerce developer: custom WooCommerce plugins and development, WordPress migration off page builders, and WordPress speed optimization - without breaking the revenue that depends on them. Store too slow? Locked into Elementor, Divi, WPBakery or Crocoblock? Core Web Vitals in the red? A plugin stack nobody wants to touch? That's exactly what I do daily as a WordPress developer and WooCommerce developer. 8+ years as a WordPress WooCommerce developer - Top Rated, 100% Job Success - working on live WordPress and WooCommerce sites that can't afford downtime. WOOCOMMERCE DEVELOPMENT Custom WooCommerce plugin development in PHP. As a WordPress plugin developer and WooCommerce plugin developer: custom hooks and filters, admin tooling, REST API endpoints, WooCommerce checkout customization, custom checkout fields, payment gateway troubleshooting (Stripe, PayPal), product catalog and inventory logic, supplier price and stock sync, and third-party API integrations (CRM, ERP, shipping). I also handle WooCommerce Subscriptions, WooCommerce Bookings, memberships, product bundles, B2B and wholesale pricing, and multilingual WooCommerce stores (WPML). I build and maintain custom WordPress plugins inside proprietary plugin environments, not just off-the-shelf configuration - Git-based workflow, staging first, clean maintainable WooCommerce development. WORDPRESS MIGRATION WordPress migration, done without breaking things: I move sites off Elementor, Crocoblock (JetEngine, JetSmartFilters, JetMenu), Divi and WPBakery page builders onto clean, native WordPress - Gutenberg, Full Site Editing (FSE), theme.json, template parts and reusable patterns. Elementor to Gutenberg migration, page builder to block theme rebuilds, classic theme to FSE, and website migration between hosts with SEO preserved (301 redirects, meta, structured data). I move custom post types, ACF and JetEngine fields, taxonomies and relationships to a native content model, and rebuild faceted filters and search (FacetWP), mega menus, TablePress tables and multilingual setups (WPML, Polylang) - including Elementor WooCommerce sites. As a WordPress theme developer I rebuild the design as a clean native block theme - lighter, faster, simpler to maintain, and API-ready if you ever decide to go headless. WORDPRESS SPEED OPTIMIZATION WordPress speed optimization and WooCommerce speed optimization: Core Web Vitals (LCP, INP, CLS), PageSpeed Insights and GTmetrix scores, page speed optimization, TTFB reduction, Redis object caching, edge and CDN caching (Cloudflare, AWS CloudFront), WP Rocket and LiteSpeed configuration, image optimization and WebP, database and slow-query optimization, plugin bloat audit. I find and fix the real bottleneck - server, database, WordPress theme or plugins - not just install another cache plugin. AI SEARCH AND AUTOMATION Where AI genuinely pays off, I add it: semantic search and recommendations across your WordPress and WooCommerce content, AI sales-agent chatbots, and automation of repetitive store operations - on your own infrastructure, with an API-ready content model that keeps a headless future open. RECENT WORK - Rebuilt a trading-education platform (~15M monthly visits) from a page builder to a custom WordPress theme, as team lead of 4 developers. WordPress speed optimization took PageSpeed from 25-35 to 95-100. - "Page performance is now 100/99 (desktop/mobile)" - a WordPress and WooCommerce Page Speed Optimization client. - Built a custom AI sales-agent WooCommerce plugin for a live store: product search, cart actions, admin UI, REST API, LLM integration. - Built a custom WooCommerce Dokan plugin (price-decay engine) - "flawless architecture, clean, modular and optimised for performance." HOW I WORK My rule: a live WordPress site is treated as live. Staging first, clear scope and milestones, and you see changes before they go near production. Honest estimates, updates every couple of days - one-off projects or ongoing maintenance and support. WHO THIS IS FOR Ecommerce teams and WooCommerce store owners who need a faster, more reliable store. Businesses that outgrew Elementor, Divi or Crocoblock and want a clean, native WordPress setup from a WordPress developer who knows WooCommerce inside out - from WooCommerce website development to custom plugins. Skills: WooCommerce, WordPress, WordPress migration, WordPress speed optimization, Core Web Vitals, custom WordPress plugin development, PHP, MySQL, REST API, Gutenberg, Full Site Editing, Elementor, ACF, FacetWP, WPML, WooCommerce Subscriptions, WP Rocket, Redis, Cloudflare, WordPress theme development, WordPress theme customization, Git. Planning a WordPress migration, need custom WooCommerce development, or want a serious WordPress speed optimization pass? Send me your site and a couple of lines about what's going on. What's slowing your WooCommerce store down right now?
Roman S. has worked .
LWM Agency
Associated with
LWM Agency
$10K+
earned
Yuriy M.
$40/hr
100% Job Success
$1K+ earned
Available now
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I’m a senior full-stack engineer with 15+ years of experience building production web applications, APIs, internal business systems, and SaaS platforms. My strongest areas are .NET/C#, ASP.NET Core, Angular, React, TypeScript, SQL databases, API integrations, and AI-assisted workflows. I usually work on systems where correctness, maintainability, and business logic matter: fintech, compliance, CRM/workflow platforms, document-heavy applications, legacy modernization, and internal operational tools. Recently, my focus has been on AI-enabled SaaS and workflow automation: document ingestion, RAG-style search, structured AI outputs, audit trails, evidence handling, policy/document generation, and integrations with third-party systems. I’m also building AlturaQuantera, an AI/compliance SaaS product, so I understand both the engineering and product side of early-stage SaaS development. What I can help with: • Full-stack SaaS development with .NET, Angular, React, TypeScript, PostgreSQL, SQL Server • Backend architecture, REST APIs, background jobs, integrations, and complex business logic • AI integrations using OpenAI / LLM APIs, document workflows, RAG, structured outputs, and automation • Compliance, fintech, CRM, document-processing, and internal workflow systems • Legacy application modernization, refactoring, performance tuning, and system stabilization • Database design, reporting, import/export workflows, and integration layers between SaaS tools • Production readiness: authentication, RBAC, audit logs, logging, testing, deployment, and maintainability • Multi-tenant SaaS architecture, user roles, permissions, subscription logic, and admin dashboards • API integrations with third-party platforms, webhooks, payment systems, CRMs, data providers, and automation tools • Data-heavy applications with complex forms, tables, dashboards, filters, workflows, and reporting • AI-assisted document search, summarization, classification, extraction, and review workflows • Clean Architecture, layered architecture, domain modeling, and maintainable service boundaries I’ve worked on systems ranging from financial platforms and CRM-like internal tools to industrial/network monitoring software and AI-assisted compliance products. I’m comfortable joining existing codebases, understanding messy business logic, and improving systems without unnecessary rewrites. Typical problems I solve: • “Our prototype works, but it is not production-ready.” • “We need a senior engineer to clean up architecture and stabilize delivery.” • “We need AI features, but not a fragile GPT wrapper.” • “Our business workflow is trapped in spreadsheets and manual processes.” • “Our legacy .NET / Angular / SQL system needs modernization.” • “We need API integrations, data imports, dashboards, permissions, and reliable backend logic.” • “We have complex documents and need AI-assisted extraction, search, or review.” • “We need a maintainable SaaS architecture before the product becomes too messy.” • “We need a technical partner who can think through product logic, not just write code.” I have experience across backend and frontend development, including ASP.NET Core APIs, Web API, Entity Framework, Dapper, SQL optimization, Angular applications, React dashboards, TypeScript frontends, background workers, file processing, scheduled jobs, authentication, authorization, and deployment workflows. I also work with AI and automation in a practical way: LLM APIs, OpenAI API, embeddings, pgvector-style search, RAG pipelines, structured JSON outputs, prompt/version management, document workflows, and human-in-the-loop review. I focus on making AI features traceable, testable, and useful for real business users — not just impressive demos. Additional relevant domains: Financial dashboards, forex/FX systems, market-data workflows, economic data APIs, reporting dashboards, document intelligence, compliance automation, CRM/workflow platforms, data imports, ETL-style pipelines, scheduled jobs, and AI-generated structured insights. Core stack: .NET / C# / ASP.NET Core / Web API / Entity Framework / Dapper / SQL Server / PostgreSQL / MySQL / Angular / React / Next.js / TypeScript / JavaScript / NestJS / Node.js / REST APIs / Docker / OpenAI API / LLM integrations / RAG / pgvector / AI automation / SaaS architecture / API integration / CRM systems / fintech applications / compliance workflows / document processing / legacy modernization / workflow automation / dashboards / reporting / authentication / RBAC / audit logs / cloud deployment / Azure / AWS / CI/CD, financial dashboards / forex systems / market data / economic data APIs / data pipelines / ETL / scheduled jobs / AI-generated insights
Altura Codeworks
Associated with
Altura Codeworks
$1K+
earned
Alena L.
$29/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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Senior WordPress Developer building fast, scalable, fully custom websites for startups, agencies, and high-budget clients — 10+ years focused on clean architecture and long-term performance, not just "making it work." I don't rely on heavy page builders unless the project calls for it. Most work is built with clean, maintainable, SEO-friendly code from scratch, so the site stays fast and easy to extend as the business grows. WHAT I CAN BUILD • High-conversion corporate & business websites • Custom WordPress platforms & admin dashboards • WooCommerce stores (B2C & B2B) • Membership sites & subscription systems • Learning Management Systems (LMS) • Booking systems & workflow automation • Landing pages optimized for ROI (SaaS, funnels, sales pages) WORDPRESS DEVELOPMENT Custom themes built from scratch, custom plugins and advanced functionality, ACF/Custom Post Types/Meta Fields, multilingual sites (WPML, Polylang), WooCommerce customization, advanced filtering and dynamic content, payment gateways (Stripe, PayPal, Apple Pay, Google Pay). PERFORMANCE & SECURITY 90–100 PageSpeed/GTmetrix scores, server optimization (Nginx, Apache, PHP-FPM, Redis), caching (Cloudflare, WP Rocket, LiteSpeed), security hardening and malware cleanup, database optimization, CDN setup and Core Web Vitals. API & INTEGRATIONS WordPress REST API & GraphQL, CRM integrations (HubSpot, Salesforce, Zoho), email marketing (Mailchimp, Klaviyo, SendGrid), webhooks and automation workflows, custom JavaScript logic. FRONT-END HTML5, CSS3/SCSS, JavaScript & jQuery, React components inside WordPress, responsive mobile-first layouts, pixel-perfect Figma-to-WordPress builds. IDEAL CLIENTS Businesses needing a stable, fast WordPress site. Agencies looking for a reliable long-term WordPress partner. Startups requiring custom functionality and integrations. Clean, secure code and full transparency throughout. Message me with your project and I'll tell you straight whether it's a good fit. WordPress Developer | Senior WordPress Developer | Custom WordPress Theme | WordPress Plugin Developer | WooCommerce Expert | WordPress Speed Optimization | API Integration | ACF Expert | Figma to WordPress | WordPress Security Updated July 12 2026
Web Design Sun®
Associated with
Web Design Sun®
$4M+
earned
Olena A.
$17/hr
100% Job Success
$20K+ earned
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I’m a full-stack web developer who’s working with the up-to-date and most effective technologies. I specialize in JavaScript plus frameworks/libraries based on this language. To ensure the highest quality standards, I tend to adhere to best coding practices. Being an easy-going and friendly team player helped me successfully build many apps in various areas. I use unique approaches to problem-solving, thus focusing on making the app work efficiently under the hood. My main field of expertise is: - React / Redux / Redux-Saga / Next - Vue 3 / Pinia - Node.js / Express / NestJS - HTML5, CSS3, SASS/SCSS, LESS, CSS-grid - JavaScript / TypeScript - Material UI / Bootstrap / Ant Design / Figma - PostgreSQL / GraphQL / MongoDB Also worked with: Docker, Sequelize/Knex Workflow: - Agile, Kanban, Scrum - GIT, SVN (bitbucket/github/gitlab) - Jira, Trello, Asana, Assembla, Basecamp, ProjectPlace. I am up to long-term and full-time collaboration, so if you need a talented dev with technical background, feel free to drop me a line any time!
Face IT
Associated with
Face IT
$10M+
earned
Illia S.
$40/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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⭐️ Top Rated Plus - Top 3% of talent on Upwork ✅ 6+ years of experience 🚀 Built a SaaS platform that served 50,000+ users ⚙️ Improved API response times by 45% 📉 Reduced server costs by 38% 🔐 Implemented secure auth systems used by 30,000+ active accounts 🛒 Built e-commerce platforms with $2M+ processed payments Hey there! 👋 I’m a Full Stack Developer with 6+ years of commercial experience as a web developer, react developer building high-load web platforms, scalable APIs, modern front-ends, and cross-platform mobile apps. I’ve successfully delivered 80+ web projects as a Full Stack Developer, working across industries like e-commerce, SaaS, FinTech, EdTech, and HRTech. As a web developer and react developer, I focus on performance, clean architecture, and business-ready solutions. 🔧 Core Expertise as Full Stack Developer / Web Developer / React Developer ✅ Front End Development as Full Stack Developer and React Developer React.js, Next.js, TypeScript, JavaScript (ES6+), Redux, Tailwind, Material UI, built 50+ dashboards, 30+ client-facing UIs, and 20+ admin panels as a react developer and web developer. ✅ Backend Development as Full Stack Developer and Web Developer Node.js, NestJS, Express.js, TypeScript, built 100+ REST APIs, authentication systems, background jobs, queues, and real-time services as a Full Stack Developer and web developer. ✅ Database Architecture PostgreSQL, MongoDB, Redis, designed 40+ optimized databases, managed millions of records, and improved query speed by 35%. ✅ WordPress Development as WordPress Developer Custom themes, SEO optimization, WooCommerce, custom plugins, built 25+ production websites as a wordpress developer. ✅ Mobile App Development as Mobile App Developer React Native, published 15+ apps with real-time sync, offline support, and API integrations. ✅ Cloud Infrastructure AWS (EC2, S3, Lambda), Docker, Kubernetes, CI/CD, deployed 60+ production environments as a Full Stack Developer and web developer. 🎯 What I Do Daily as a Full Stack Developer / Web Developer / React Developer ✅ Work full-time as a Full Stack Developer on SaaS platforms with 1,000+ active daily users ✅ Build advanced dashboards as a react developer with <120ms TTFB ✅ Create fast-loading websites as a web developer with 90+ Google PageSpeed scores ✅ Develop platforms that handle 500,000+ requests per day as a Full Stack Developer ✅ Build performant SPAs and SSR apps as a react developer ✅ Deliver production-ready websites as a wordpress developer ✅ Publish stable applications as a mobile app developer 💼 Industries I Work In as Full Stack Developer / Web Developer: - 📦 E-commerce platforms as a Full Stack Developer and web developer - 💳 FinTech systems as a Full Stack Developer - 📊 SaaS products as a react developer and Full Stack Developer - 🏫 EdTech and HRTech solutions as a web developer - 🧩 Corporate websites as a wordpress developer - 📱 Mobile-first products as a mobile app developer Why Clients Choose Me When clients need a Full Stack Developer, web developer, or react developer, they work with me because I bring: ✅ 6+ years as a Full Stack Developer ✅ 80+ delivered projects as a web developer and react developer ✅ 15+ long-term business clients ✅ Clean, scalable code ✅ Fast delivery and clear communication Let’s build your product with a Full Stack Developer who thinks as a web developer, builds as a react developer, and delivers as a Full Stack Developer focused on real business results
Seedium
Associated with
Seedium
$2M+
earned