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Netherlands
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$65/hr
100%
Job Success
$2M+ earned
Available now
Offers consultations
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$100M+ in Client Revenue | Expert-Vetted (Top 1% Upwork) | 240+ Projects | 100% Job Success | 10+ Years on Upwork
I’m a Full Stack Developer, SaaS Developer and Backend Developer focused on building production-ready software that holds up under real-world usage. My work sits at the intersection of software developer, web developer, and SaaS platform builder, with a strong backend-first mindset and deep attention to scalability, performance, and long-term maintainability.
As a Full Stack Developer, I take ownership of systems end-to-end, pairing robust backend architecture with clean, modern interfaces. My frontend work is typically React-based and I often collaborate with or replace traditional React developer or web developer setups by owning both frontend and backend in a single, coherent system. While I’ve previously worked as a WordPress developer and integrated WordPress-based sites into custom platforms, my current focus is on custom SaaS and API-driven systems rather than CMS-centric builds.
As a SaaS Developer, I help companies design, build and scale SaaS products, internal tools and API-driven web applications intended for long-term use. My experience as both a Backend Developer and software developer allows me to think beyond features and focus on architecture, reliability and operational stability from day one. Many of the platforms I build support internal teams, customer dashboards and multi-role workflows where permissions, data integrity and business rules are critical.
In my day-to-day work as a Backend Developer, I design and implement backend services, APIs and data models that power SaaS platforms, complex web applications and mobile-connected systems. I regularly work with Node.js and Python, drawing on my background as a Python developer to build scalable services, background jobs and asynchronous workflows that perform reliably in production.
As a Full Stack Developer, I ensure these backend systems integrate cleanly with frontend applications, mobile extensions and third-party APIs. When required, I support frontend and mobile app developer workflows using React and React Native. This end-to-end ownership is a key reason clients bring me in as a Full Stack Developer rather than splitting work across multiple roles.
A significant portion of my work as a SaaS Developer and Backend Developer involves building internal platforms, dashboards and API-first systems that integrate external services. In these projects, I often collaborate closely with product, growth, or analytics teams, including teams focused on SaaS marketing by designing clean data pipelines, event tracking and backend logic that supports experimentation, reporting and lifecycle insights.
When projects require AI-powered functionality, I bring hands-on experience integrating AI into backend systems. While my primary role remains Full Stack Developer and Backend Developer, I regularly implement AI-enabled workflows, data processing pipelines and LLM-driven features inside SaaS platforms. This allows me, as a SaaS Developer, to deliver AI functionality that is reliable, observable and cost-controlled rather than experimental.
Clients typically work with me when they need:
- a Full Stack Developer who can own frontend and backend
- a SaaS Developer who understands long-term scalability constraints
- a Backend Developer experienced with real production systems
- mobile app developer and React developer experience as a software developer
- backend services built with Node.js or Python by an experienced Python developer
- web applications with complex workflows and business rules from a senior web developer
- API-driven architectures and third-party integrations
- SaaS platforms designed to support growth, analytics and SaaS marketing data needs
- MVPs that can realistically evolve into long-term SaaS products
A large part of my work as a Full Stack Developer, SaaS Developer and Backend Developer focuses on:
- multi-role dashboards and internal tools
- authentication, authorization and permissions
- API-first backend system design
- integrations with external platforms, including legacy CMS or WordPress-based systems when required
My core work as a Backend Developer and Full Stack Developer covers:
- backend services built with Node.js and Python
- APIs, background jobs and integrations
- databases such as PostgreSQL
- modern stacks using tools like Supabase
- AI-enabled backend features where they add real business value
I regularly work on MVP builds and early-stage products as a SaaS Developer, with strong focus on solid backend foundations, sensible scaling paths and avoiding short-lived prototypes. Based on scope and timing, I work hands-on as a Full Stack Developer, SaaS Developer and Backend Developer and when useful, involve specialists from my team.
Long-term results come from clarity and intentional system design. I focus on delivering software that teams can confidently run, maintain and scale.
Roy V.
has worked
.
Associated with
Interactivated Solutions - Top Rated Plus Agency
$3M+
earned
$60/hr
100%
Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
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$40M+ in Client Revenue | Top-Rated Plus | 100% Job Success | 10+ Years on Upwork
I help companies build, migrate, and scale reliable commerce systems. I work as a Shopify Developer, Shopify migration specialist, and eCommerce Development expert, focusing on stable architecture, performance, and long-term growth rather than short-term fixes, fragile plugins, or rushed implementations.
Clients engage me as a Shopify Developer for Shopify migration and eCommerce Development when they need predictable delivery and clean technical execution. My work includes full Shopify builds, advanced Shopify migration projects, and custom eCommerce Development for businesses that have outgrown basic templates, rigid themes, or plugin-heavy setups that no longer scale.
I regularly support Shopify migration and eCommerce Development initiatives as a Shopify Developer during audits, rebuilds, replatforming projects, and long-term optimization work.
A major part of my experience is Shopify migration and eCommerce Development from platforms such as wordpress, woocommerce, and bigcommerce. I regularly deliver wordpress migration and bigcommerce migration projects, handling products, customers, orders, historical data, URLs, redirects, and SEO continuity. As a senior Shopify Developer focused on Shopify migration and eCommerce Development, I approach migrations as structured engineering projects, not simple exports, one-click tools, or automated scripts without validation.
Beyond standard Shopify stores, I also design and build custom ecommerce platforms and marketplace systems. These include bespoke ecommerce website solutions, multi-vendor marketplaces, and commerce-related web applications. In these cases, eCommerce Development goes far beyond themes, requiring custom workflows, platform extensions, backend services, and well-defined data models.
From a technical perspective, I work as a Full Stack Developer, using React, Next.js, Medusa.js, Node.js, and Python. This enables advanced implementations such as headless storefronts, custom checkout flows, internal dashboards, marketplace logic, admin tools, and platform integrations, all aligned with Shopify migration requirements and long-term eCommerce Development goals.
As a Shopify developer, I handle custom themes, shopify app integrations, advanced Liquid logic, and performance optimization. shopify speed, Core Web Vitals, accessibility, and maintainable code are always priorities. Clients looking for a shopify designer benefit from my ability to combine UX, performance, and engineering within a single Shopify Developer and eCommerce Development engagement.
My eCommerce Development experience includes subscription businesses, shopify dropshipping, content-driven ecommerce website builds, B2B storefronts, and scalable marketplace platforms. I often collaborate with web developer and wordpress developer teams during Shopify migration projects, ensuring clean handovers, documented systems, and maintainable codebases that internal teams can extend safely.
Many clients come to me specifically for Shopify migration and eCommerce Development planning before any build starts. In these cases, my role as a Shopify Developer includes technical discovery, architecture decisions, data validation strategy, risk assessment, and execution planning. This upfront work helps avoid replatforming mistakes and ensures Shopify migration efforts support real operational and revenue goals.
I’m frequently brought in as a Shopify Developer to audit existing Shopify stores, review shopify app usage, identify performance bottlenecks, assess technical debt, and define a clear roadmap for continued eCommerce Development. This is especially valuable for teams preparing for scale, international expansion, multi-store setups, or complex Shopify migration scenarios involving external systems.
For long-term engagements, I often stay involved as a Shopify Developer or Full Stack Developer and eCommerce Development partner, supporting ongoing improvements, feature expansion, platform evolution, and custom development as business needs change over time.
What working with me typically looks like:
- Senior ownership from a Shopify Developer
- Structured Shopify migration planning and execution
- Custom eCommerce Development and marketplace builds
- Full Stack Developer support when a Shopify Developer alone is not enough
- Long-term focus on scalability, performance, and maintainability
Depending on scope, I either:
- work directly as a Shopify Developer, Shopify migration specialist, Full Stack Developer and eCommerce Development expert, or
- involve additional specialists from the team when more capacity is required
If you’re looking for a Shopify Developer for Shopify migration or a Full Stack Developer for eCommerce Development, including custom ecommerce platforms, advanced ecommerce website extensions, or marketplace platforms, I’m happy to review your setup and discuss next steps.
Ronald E.
has worked
.
Associated with
Interactivated Solutions - Top Rated Plus Agency
$3M+
earned
$25/hr
100%
Job Success
$10K+ earned
Available now
Offers consultations
Start of list.
End of list.
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.
Waseem M.
has worked
.
$15/hr
100%
Job Success
Available now
Start of list.
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I build WordPress websites that are fast, reliable, and designed to convert visitors into customers.
Whether you need a custom theme, a WooCommerce store, or improvements to an existing site, I focus on clean builds, strong performance, and a structure that supports your business goals.
What I can help with:
• Custom WordPress themes built from scratch
• WooCommerce stores optimized for sales
• Landing pages designed to convert
• Speed optimization and performance fixes
• Fixing, rebuilding, or improving existing WordPress sites
What you can expect:
• Clean, maintainable code
• Clear communication and regular updates
• On time delivery
• A website that is easy to manage after launch
Technologies I use:
• WordPress, WooCommerce, Elementor
• PHP, JavaScript, HTML, CSS
• SEO tools like Yoast
• GitHub and cloud platforms when needed
I also help you make the right decisions for your project, based on your goals, timeline, and budget, not just the technical side.
If you want a WordPress site that not only looks good but also performs and supports your business, send me a message and I will take a look.
Netherlands
$22/hr
$200+ earned
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I am an MCA(Master of Computer Applications) and did Web Developer Course (March 2014); during which I have worked extensively on web based technologies like HTML, Dreamweaver, CSS, JavaScript, MySQL, PHP, Joomla and Photoshop. I have worked on jQuery and Bootstrap too.
While finishing my Web Developer course, I got the opportunity to take part and win First prize in a competition called "TechnoMinds"(North India Zone)-year 2014, where I got the opportunity to work on both FrontEnd and BackEnd technologies.
$40/hr
100%
Job Success
$900+ earned
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Hello! I'm a passionate and dedicated freelance developer with over 20 years of experience in building robust web, enterprise, and mobile applications. My expertise spans across both front-end and back-end technologies, allowing me to deliver full-cycle development solutions tailored to your needs. I pride myself on my ability to communicate effectively and deliver projects on time and within budget.
𝗦𝗸𝗶𝗹𝗹𝘀
• Web Development Frameworks: React, Angular, Vue.js, Node.js
• Backend Technologies: Python (Django, Flask), PHP (Laravel), Java Spring
• Mobile Development: React Native, Flutter
• Database Management: MySQL, MongoDB, PostgreSQL
• Cloud Services: AWS, Azure, Google Cloud, Digital Ocean
• DevOps: Docker, Kubernetes, CI/CD pipelines, GitHub Actions
• CMS Expertise: WordPress, Shopify, Magento, WooCommerce
• AI/ML: Machine Learning (scikit-learn, TensorFlow, PyTorch), Deep Learning, Natural Language Processing (NLP), Computer Vision, Large Language Models (LLMs)
• SEO: Keyword Research, On-Page Optimization, Off-Page Optimization, Technical SEO, SEO Auditing, SEO Analytics, Search Console, Google Analytics
• QA: Test Automation (Selenium, Cypress, Appium), Functional Testing, Regression Testing, Performance Testing, API Testing, Usability Testing, Test Planning, Defect Tracking, Agile Testing Methodologies
• Technical Project Management: Agile Methodologies (Scrum, Kanban), Waterfall, Risk Management, Project Planning, Project Scheduling, Budget Management, Stakeholder Management
• Business Analysis: User Stories, Use Cases, Business Process Modeling/Redesign, Data Flow Diagrams, Prototyping, Stakeholder Interviews, Workshops, Requirements Documentation
𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗢𝗳𝗳𝗲𝗿𝗲𝗱
• Custom Web Application Development
• E-commerce Solutions
• AI-Powered Solutions
• API Development and Integration
• Website Redesign and Optimization
• Performance Tuning and Security Enhancements
• Agile Project Management and Scrum Master Services
• QA Services
• Business Analysis
• SEO Audits and Optimization
• Ongoing Maintenance and Support
𝗪𝗼𝗿𝗸 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲
Freelance Developer | Upwork | 2016 – Present
• Successfully completed over 50 projects, ranging from small business websites to complex web applications.
• Developed a custom e-commerce platform using React and Node.js that increased client sales by 30%.
• Integrated third-party APIs for payment processing and shipping solutions.
• Developed and deployed a machine learning model to predict customer churn for a SaaS client, resulting in a 15% reduction in churn rate.
𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀
• AWS Certified Solutions Architect
• Google Cloud Professional Developer
• Oracle Certified Java Programmer
• IREB Certified Requirements Engineer
• Certified Scrum Master
𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆
I am available for both short-term projects and long-term collaborations. My typical working hours are flexible to accommodate different time zones.
Let’s discuss how I can help you achieve your project goals! Feel free to reach out for a consultation or to discuss your specific requirements.
Associated with
Beaconhouse Technology
$3K+
earned
Netherlands
$40/hr
$0 earned
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Looking for small and middle team that works on many challenge problems.
Since I am an algorithm expert and have been involved with acm/icpc, I write code that is very simple and easy to understand, which saves time and works efficiently.
I can handle website, game, blockchain development projects.
$15/hr
$0 earned
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I'm an AI Engineering student specializing in web development and artificial intelligence integration. I build AI-powered chatbots, modern websites, and automation systems for clients worldwide.
What I offer:
• AI Chatbots & Assistants — Custom chatbots using OpenAI API, multilingual (EN/AR/NL)
• Web Development — Responsive websites and web apps using HTML, CSS, JavaScript, React, and Node.js
• AI Automation — Automate tasks, data analysis, and workflows with AI
• API Integration — Connect OpenAI, LLMs, and third-party APIs
I serve clients in the Netherlands, the Middle East, and globally — and I communicate fluently in English, Arabic, and Dutch.
Let's build something great together!
$3/hr
$0 earned
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I am a motivated developer with a robust foundation in AI-assisted coding, backed by hands-on experience in game development and freelance projects. With three years of total experience, I specialize in translating creative ideas into functional code, ensuring that projects not only meet technical requirements but also exceed client expectations. My strong communication skills allow me to collaborate effectively with teams and clients alike, making sure that your vision comes to life seamlessly. If you're seeking a coder who is eager to tackle challenges and contribute to innovative projects, I would love to discuss how I can help you achieve your goals. Let's create something amazing together.
$20/hr
$5K+ earned
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I am a graphic designer/UI artist from Japan, currently in the Netherlands, with +12 years of experience.
As a designer, I've had the opportunity to work for several exciting companies in the Netherlands, UK, US, China, and Japan.
I am open for remote job opportunities mainly in:
✅ Graphic design for both digital and print (logo, 2D/3D illustration, poster, flyer, card, sign etc.)
✅ User interface design for games / apps / websites
✅ UI animation and motion graphics design including creating interactive prototypes
✅ Websites design and developing with HTML / CSS / Javascript / CMS
✅ Video editing for social media / YouTube
⬇️ Have a look at my portfolio below to get a clear insight of the work I've done.
There are some work I cannot make public due to confidentiality reasons. However, I can share some of them individually, so if you are interested please let me know.
I would love to hear about your story and find out how I can help you so feel free to contact me. Thank you!