Some businesses need a Shopify or WooCommerce store built right the first time. Others have one that's grown fast - and now orders aren't syncing, inventory is off, or integrations are quietly failing. And some are ready to bring AI automation into their business and actually make their systems smarter. Either way, that's where I come in. I'm Jeroen, founder of Brightness Group (Amsterdam). For 18+ years, I've helped e-commerce businesses and SaaS companies build and scale digital infrastructure - from Shopify and WooCommerce store development, to custom Laravel backend applications, to AI-powered workflow automation that removes real bottlenecks. Shopify & WooCommerce Development ▸ Shopify store setup, custom theme development, and Shopify Liquid coding ▸ Custom Shopify app development and Shopify Plus customization ▸ WooCommerce store development, custom plugins, and performance optimization ▸ Store migrations - WooCommerce to Shopify or platform-to-platform ▸ Headless Shopify (Hydrogen) and headless WooCommerce builds ▸ Connecting your store to payment gateways, shipping tools, and third-party platforms - set up correctly from day one Laravel Backend Development ▸ Custom Laravel web applications, SaaS platforms, and admin dashboards ▸ Laravel API development - REST APIs, webhooks, and third-party integrations ▸ Backend logic for e-commerce stores that need functionality beyond what Shopify or WooCommerce supports natively ▸ CRM, ERP, and payment gateway integrations (Stripe, Mollie, PayPal, Salesforce) ▸ Database architecture, performance optimization, and legacy system rebuilds ▸ Vue.js and React frontends connected to Laravel backends API Integrations & Workflow Automation ▸ Multi-system integrations - Shopify, WooCommerce, CRM, ERP, inventory, and payment systems kept in sync ▸ Webhook setup and event-driven architecture that holds up under real load ▸ Automation workflows using n8n and Make - eliminating manual steps between your store and your tools ▸ Fixing broken integrations - order sync failures, inventory mismatches, data inconsistencies ▸ Data migration from older or loosely structured systems AI Integration & Automation ▸ ChatGPT and Claude API integration into Shopify stores, WooCommerce, and Laravel applications ▸ AI agents that handle repetitive tasks - order follow-ups, support triage, inventory alerts ▸ LLM-powered features - smart product search, automated tagging, dynamic content, and recommendations ▸ Connecting AI to your real business data so responses and actions are accurate, not generic ▸ Intelligent workflow automation - reducing manual work across your store, team, and tools What Working With Me Looks Like Most clients come with one of three problems - they need something built properly from the start, something is running and quietly going wrong, or they want AI working inside their business but aren't sure where to begin. In all three cases the approach is the same: understand the full picture, solve the root cause, build something that doesn't need to be redone six months later. I'm not the cheapest option. But clients who've worked with me once tend to come back - because they don't have to redo the first one. Tech Stack & Platforms Shopify · Shopify Plus · Shopify Liquid · Shopify Hydrogen · WooCommerce · Magento · Laravel · PHP · REST API · GraphQL · Webhooks · MySQL · PostgreSQL · Vue.js · React · JavaScript · n8n · Make · Stripe · Mollie · PayPal · Salesforce · OpenAI API · Claude API · LLM Integration · AWS · Docker · Git Planning a new store, fixing an existing one, or exploring what AI could do for your business - share what you're dealing with. I'll give you a straight answer on what it would take. Jeroen Kerkhof CEO & Lead Developer, Brightness Group

I am an AI Agent and Automation Developer with 12+ years in software engineering, the last 5 focused entirely on AI agents, machine learning systems, LLM applications, RAG pipelines, and workflow automation that ships to real users. n8n Automation & AI Agents I build n8n workflows and Make,com or Zapier when they fit better for lead routing, data sync, content pipelines, support triage, and internal reporting. When a workflow needs to think rather than just follow rules, I integrate AI agents powered by GPT-4, Claude, or open-source LLMs so they make decisions autonomously. AI Voice Agents & Conversational AI I build AI voice agents using Vapi and Retell that handle real phone calls, qualify leads, book appointments, and answer customer queries trained on your scripts and connected to your CRM. Beyond voice, I develop conversational AI assistants, multi-agent systems, and agentic workflows where multiple AI agents collaborate to complete complex tasks end to end without human intervention. Machine Learning & Deep Learning I design and deploy machine learning models and deep learning solutions using PyTorch and TensorFlow from data preprocessing and model training to fine-tuning pre-trained models on your custom dataset. Whether you need a classification model, NLP pipeline, recommendation engine, or a neural network built from scratch, I build it production-ready with proper testing and monitoring. Chatbots & Generative AI Apps GPT-4, OpenAI, LLaMA, Claude I use whatever model fits the use case and budget. That covers the full stack: model selection, fine-tuning on your data, building a RAG pipeline with LangChain or LlamaIndex, vector database setup with Pinecone or ChromaDB, and deploying to production. Support bots, sales assistants, internal knowledge agents I have built them all. API Integration & System Connectivity Most AI projects die at the integration step. I make sure yours does not. REST APIs, webhooks, OpenAI and Claude API integration, CRM and database connectivity, Slack, Notion, internal dashboards whatever your stack looks like. A few things worth knowing: → I push for a small prototype before a full build faster, cheaper, and proves the idea works in your real environment → I write production code tests, error handling, logging, retry logic the unglamorous stuff that keeps your project running in six months → I will tell you when AI is not the answer if a Zapier flow beats a custom machine learning model, I will say so Core Stack: Python · n8n · LangChain · LlamaIndex · OpenAI API · Claude API · GPT-4 · LLaMA · Vapi · Retell · Voice AI · RAG Pipelines · Machine Learning · Deep Learning · Neural Networks · PyTorch · TensorFlow · Pinecone · ChromaDB · FAISS · Make,com · Zapier · Docker · AWS · Google Cloud · REST APIs Got a project in mind even half-formed? Send me a message and I will tell you honestly whether I am the right person for it.

🚀 Full Stack Developer | WordPress, React & AI-Enhanced Web Solutions I can help businesses transform ideas into fully functional digital products — from initial strategy, wireframing, and UI/UX design to full-stack development, optimization, and successful launch. I’m a Full Stack Developer with 8+ years of experience building modern web applications, high-converting e-commerce platforms, and scalable digital solutions. I specialize in frontend development, WordPress ecosystems, API integrations, and AI-enhanced workflows that help businesses improve user experience, automate processes, and grow faster. I combine clean code, responsive UI/UX design, and modern AI-powered development tools to create fast, efficient, and conversion-focused websites and applications.

🔹 End-to-end guidance from idea to release 🔹 Create the UI/UX from scratch or work with your provided designs (Figma, Sketch, etc.) 🔹 Native iOS & Android apps or cross platform with React Native 🔹 Successfully launched many apps to the App Store & Play Store 🔹 Transparent communication and frequent progress updates 🔹 Rapid turnaround and on-time delivery 🔹 AI integration 🔹 Web front-end development with Angular or React 🔹 Back-end development with Java (Spring), Rust or Node 🔹 Familiar with all common APIs and integrations I’ve been developing software for over 20 years, working on a wide range of projects including back-end services, hosting, containers, websites, desktop applications, APIs, and custom-built systems. I approach every job with dedication, aiming for efficient solutions that are reliable, affordable and easy to maintain.

𝗜 𝗵𝗲𝗹𝗽 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀 & 𝗲𝗻𝘁𝗿𝗲𝗽𝗿𝗲𝗻𝗲𝘂𝗿𝘀 𝗯𝘂𝗶𝗹𝗱 𝘁𝗵𝗲 𝗯𝗲𝘀𝘁 𝗦𝗮𝗮𝗦 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗮𝗻𝗱 𝗔𝗜 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 📈 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 🔥 𝗦𝗖𝗔𝗟𝗔𝗕𝗟𝗘 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗮𝗻𝗱 𝗦𝗧𝗥𝗔𝗧𝗘𝗚𝗜𝗖 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗶𝗻𝗴 🔥 25+ projects, generated billions of impressions, worked with top brands like Disney Music, Snap, Cheetos and personal brands with hundred of thousands of followers. “𝑾𝒆’𝒗𝒆 𝒃𝒆𝒆𝒏 𝒘𝒐𝒓𝒌𝒊𝒏𝒈 𝒘𝒊𝒕𝒉 𝑾𝒆𝒔𝒔𝒆𝒍 𝒇𝒐𝒓 𝒚𝒆𝒂𝒓𝒔. 𝑯𝒊𝒔 𝒂𝒃𝒊𝒍𝒊𝒕𝒚 𝒕𝒐 𝒅𝒆𝒍𝒊𝒗𝒆𝒓 𝒉𝒊𝒈𝒉-𝒒𝒖𝒂𝒍𝒊𝒕𝒚 𝒘𝒐𝒓𝒌 𝒐𝒏 𝒕𝒊𝒎𝒆 𝒄𝒐𝒏𝒔𝒊𝒔𝒕𝒆𝒏𝒕𝒍𝒚 𝒆𝒙𝒄𝒆𝒆𝒅𝒆𝒅 𝒐𝒖𝒓 𝒆𝒙𝒑𝒆𝒄𝒕𝒂𝒕𝒊𝒐𝒏𝒔. 𝑯𝒆 𝒉𝒆𝒍𝒑𝒆𝒅 𝒖𝒔 𝒐𝒖𝒕 𝒅𝒆𝒍𝒊𝒗𝒆𝒓𝒊𝒏𝒈 𝒔𝒐𝒎𝒆 𝒐𝒇 𝒐𝒖𝒓 𝒎𝒐𝒔𝒕 𝒅𝒆𝒎𝒂𝒏𝒅𝒊𝒏𝒈 𝒑𝒓𝒐𝒋𝒆𝒄𝒕𝒔 𝒍𝒊𝒌𝒆 𝑫𝒊𝒔𝒏𝒆𝒚 𝒂𝒏𝒅 𝑪𝒉𝒆𝒆𝒕𝒐𝒔. 𝑾𝒆𝒔 𝒊𝒔 𝒂 𝒑𝒓𝒐𝒂𝒄𝒕𝒊𝒗𝒆 𝒑𝒓𝒐𝒃𝒍𝒆𝒎 𝒔𝒐𝒍𝒗𝒆𝒓 𝒘𝒉𝒐 𝒄𝒐𝒎𝒎𝒖𝒏𝒊𝒄𝒂𝒕𝒆𝒔 𝒆𝒇𝒇𝒆𝒄𝒕𝒊𝒗𝒆𝒍𝒚 𝒂𝒏𝒅 𝒘𝒐𝒓𝒌𝒔 𝒘𝒆𝒍𝒍 𝒊𝒏𝒅𝒆𝒑𝒆𝒏𝒅𝒆𝒏𝒕𝒍𝒚 𝒂𝒏𝒅 𝒂𝒔 𝒑𝒂𝒓𝒕 𝒐𝒇 𝒂 𝒕𝒆𝒂𝒎. 𝑰 𝒉𝒊𝒈𝒉𝒍𝒚 𝒓𝒆𝒄𝒐𝒎𝒎𝒆𝒏𝒅 𝒉𝒊𝒎 𝒇𝒐𝒓 𝒂𝒏𝒚 𝒔𝒐𝒇𝒕𝒘𝒂𝒓𝒆 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 𝒑𝒓𝒐𝒋𝒆𝒄𝒕.” ⭐️⭐️⭐️⭐️⭐️ - Kevin Ng, co-founder Wildebeest Like what you're hearing? Invite me to your job on UpWork to schedule a FREE discovery call to find out if we can build something amazing together. 🔑 𝗧𝗵𝗶𝘀 𝗶𝘀 𝘄𝗵𝗮𝘁 𝘀𝗲𝘁𝘀 𝗺𝗲 𝗮𝗽𝗮𝗿𝘁 𝗳𝗿𝗼𝗺 𝗲𝘃𝗲𝗿𝘆𝗯𝗼𝗱𝘆 𝗲𝗹𝘀𝗲 𝘆𝗼𝘂 𝗰𝗼𝘂𝗹𝗱 𝗵𝗶𝗿𝗲 𝘁𝗼 𝗵𝗲𝗹𝗽: 🔸 | deliver top-notch results the first time. Many clients come to me after taking a chance with unproven tale or untrained in-house resources. Hiring me ensures you will launch with something that makes you proud for years without headaches. 🔸 No false promises! My development process consists of constant communication and transparency, everything I do is geared to allow you to have full control of everything built. 🔸 You won't be hanging dry after the project is delivered. I provide post-launch support and after care whenever needed 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗼𝗻 𝗨𝗽𝗪𝗼𝗿𝗸 𝘁𝗼 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗙𝗥𝗘𝗘 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝗶𝗳 𝘄𝗲 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🔑 SERVICES & SOLUTIONS: ✅ SaaS Development ✅ MVP Development ✅ Custom Development ✅ AI Knowledge Bases ✅ AI Chatbots ✅ DM Automations ✅ Product Definition ✅ Requirement Setting ✅ Wireframes ✅ Custom Design ✅ Full Stack Development (Frontend + Backend) ✅ Automated testing ✅ Quality Assurance Tests ✅ Platform Hosting ✅ Database Architecture ✅ Custom API's TECH STACK: ✅ ReactJS + NextJS (TypeScript, SCSS, TailwindCSS) ✅ Supabase, Firebase, Vercel, AWS, Google Cloud ✅ NodeJS, ExpressJS, Docker, Python, MySQL, NoSQL (MongoDB, Firebase, Redis), PostgreSQL, GraphQL ✅ Figma, AdobeXD, Sketch, PSD ✅ GitHub/Gitlab/Bitbucket, Slack, Jira/Notion/Trello/ClickUp 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗼𝗻 𝗨𝗽𝗪𝗼𝗿𝗸 𝘁𝗼 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗙𝗥𝗘𝗘 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝗶𝗳 𝘄𝗲 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🔑

I help startups and product teams ship production-ready web and mobile apps — on time, well-architected, and easy to hand off. Over 10 years I've gone from writing the first line of code to leading full engineering teams, including a SaaS platform on AWS that held 99.9% uptime under heavy traffic. Recent clients call me "committed to quality," "reliable," and someone who "does not fail the deadline." That's the baseline I hold myself to on every project. What I'm best at: ✔ React / Next.js frontends that are fast and maintainable ✔ Node.js + TypeScript backends and REST/GraphQL APIs ✔ React Native mobile apps (iOS & Android) ✔ AWS infrastructure — ECS, Fargate, Docker, CI/CD ✔ Real-time features: WebSockets, live dashboards, chat systems ✔ Fintech integrations: payment gateways, compliance, encryption ✔ PostgreSQL, MongoDB, Firebase I work with a small number of clients at a time so you get my full attention — not a response from a VA at 2am. If you have a project in mind, message me with a brief description and I'll tell you honestly if I'm the right fit.

Tired of juggling multiple freelancers for your web projects? Need a one-stop solution for frontend, backend, design, and even e-commerce? I’m a Full-Stack Web Developer with almost 10 years of experience, and I’ve done it all – from building complex web applications to designing and launching beautiful business websites. My skill set spans Django/Flask, Node/Express, React/Vue, and popular CMS like WordPress and Shopify. I also turn Figma designs into live sites and can integrate any APIs or third-party services you need. Consider me your “all-in-one” web expert, here to make your project a success from start to finish. Services Offered: Custom Web Applications: End-to-end development of web apps and SaaS platforms (Python or JavaScript stacks). I build scalable backends, intuitive frontends, and robust APIs tailored to your business needs. E-Commerce & CMS Development: Online store development (Shopify, WooCommerce) and website builds/revamps (WordPress, Webflow, Wix, Squarespace) to establish or improve your online presence. Responsive Design & Frontend Magic: Implementation of modern, mobile-friendly UI/UX from tools like Figma or Sketch. Your site will look professional and work flawlessly on every device. API Integrations & Automations: Seamless integration of third-party APIs (payment gateways, maps, CRM, you name it) and automation tools (Zapier, GoHighLevel, etc.) to extend functionality and streamline your workflows. Consultation & Project Rescue: Need advice on tech stack or stuck with a half-finished project? I can step in, audit code, suggest improvements, and get your project back on track. Why Hire Me: Versatile Expertise: I bring a rare mix of skills across full-stack development, design, and e-commerce. This means I can see the “big picture” and ensure all parts of your project fit together perfectly. Proven Success: I’ve successfully delivered 30+ projects for startups, agencies, and entrepreneurs. 100% Job Success and Top Rated status on Upwork testify to the quality of my work and client satisfaction. Problem Solver & Innovator: I love complex challenges. Clients often come to me after dealing with devs who “couldn’t deliver.” I step in, quickly diagnose issues, and present effective solutions – turning around tough projects. Excellent Communication: When you work with me, you get clarity. I’m responsive, ask the right questions, and make sure we’re always on the same page. No tech jargon overload – unless you love the nerdy details! Dependable Partner: I meet deadlines and won’t disappear on you. My goal is to build long-term relationships, so your success is my success. I even offer post-project support to ensure everything runs smoothly. Sound like the kind of expertise you need? Let’s talk! I’m happy to discuss your project requirements, share ideas, and answer any questions. Invite me to your job or drop me a message, and let’s create something great together!

Frontend developer with 3+ years of industry experience in Real Estate, E-Commerce, and Fashion. Expert at designing and developing impactful web apps, mobile apps and integrating with APIs. Experienced in working with backend tech as well. Eager to learn and adapt to new technologies. What I do best? - Curating delightful user journeys with best UI / UX practices (Figma). - Develop and maintain responsive, accessible, and modern web experiences. - Work with React, NextJS, and TypeScript to build scalable end to end solutions. - Optimize web applications for performance, usability, and accessibility. - Search engine optimization and deep analytics integration. - Creating test plans and executing manual and automated testing (Cypress).

Hey, I'm Kashan, a full stack developer based in the Netherlands with 6+ years of experience building web apps, desktop applications, and managing cloud infrastructure. I hold a Master's degree in Business Data Analytics from TIAS School for Business and Society in the Netherlands. I've completed 33 projects on Upwork with a 100% Job Success score and Top Rated status. I work across the entire stack. On the front end, I build with React, NextJS, Angular, and VueJS. On the back end, I use NodeJS, Express, Python ,PHP, and Laravel. I'm equally comfortable spinning up a WordPress site with custom plugins as I am architecting a MERN or MEAN stack application from scratch. Beyond web development, I build cross-platform desktop apps using Electron and Tauri, and I handle the DevOps side of things too. Docker, AWS, Azure, DigitalOcean, CI/CD pipelines, Nginx, SSL, and Linux server management. If your project needs a database, I work with MongoDB, PostgreSQL, and MySQL. On the data and analytics side, I work with Python, Tableau, Tableau Data Prep, Orange, and Altair AI for data visualization, business intelligence, and data-driven decision making. I've also built several AI-powered applications using the OpenAI API, including chatbots and intelligent web tools. What makes working with me different is that you get one person who understands the full picture, from writing clean, documented code to deploying it on a properly configured server. I don't just build features; I think about architecture, performance, and long-term maintainability. I'm in the CET timezone, which works well for both European and US-based clients. I typically respond within a few hours and I'm always open to hopping on a quick call to discuss your project before we start. If you're looking for a reliable developer who can take ownership of your project end-to-end, send me a message. I'd love to hear what you're working on.

I am a Web Developer with 15+ years of extensive experience building full-stack solutions, CMS platforms and cloud-integrated applications. Over the past decade, I've delivered projects that range from custom e-commerce sites and responsive front-end interfaces to scalable back-end APIs and cloud-hosted environments. ✔On the technical side, I work across the full stack: Front-End: HTML, CSS, JavaScript, React, Vue Back-End: Node.js / Express, PHP, Python Databases: MySQL, MongoDB Cloud & DevOps: AWS, GCP, Azure, Docker, CI/CD pipelines CMS Expertise: Shopify, WordPress, custom CMS development, content workflows What sets me apart is my ability to bridge technology and communication. As both a writer and educator, I excel at translating complex web solutions into clear strategies for clients, teams and end users. I've coached colleagues in adopting new technologies, authored professional articles on ICT and EdTech and led digital transformations that improved workflows and performance. I'm now seeking opportunities where I can leverage my skills in full-stack development, CMS customization and cloud integration to deliver modern, user-focused, and future-ready web solutions.