🐇🎩 Building products is like magic: instead of rabbits, I pull working software out of requirement docs.✨
Top Rated Plus on Upwork, top 3% globally
⚡ WHAT YOU GET
▸ 12+ Full Stack Developer React Node | AI development | SaaS Developer | MERN stack
▸ 60+ delivered projects across AI SaaS, CRM systems, dashboards, automation platforms, healthcare, legal tech, real estate, e-commerce, trading software
▸ 15+ AI-powered SaaS MVPs, AI CRM systems, RAG tools, OCR/PDF processing, OpenAI and Claude integrations built from validation to launch
▸ 25+ scalable React, Next.js, Node.js, Python AI backend, PostgreSQL, Stripe, AWS, Docker builds, full technical ownership, secure architecture, production-ready delivery as a Full Stack AI SaaS Developer
⚡ ACHIEVEMENTS | CLIENT WINS FROM AI SAAS & FULL STACK DEVELOPMENT
▸ 26-day ROI recovery recruitment agency launched a Recruiting SaaS Platform with CRM automation, 2x faster candidate workflows
▸ 93% faster estimation construction business reduced quoting time from 8 hours to 30 minutes with a custom Construction Estimator Web App
▸ #4 Product of the Day legal tech founder launched an AI Legal Assistant, RAG-powered document search, OpenAI integration, AI workflow automation
▸ 5+ secure healthcare platforms med spa businesses improved provider/patient workflows with role-based access, admin dashboards, API integration
▸ 10+ CRM & trading systems replaced manual operations with custom CRM platforms, trading dashboards, reporting tools, scalable workflow automation
⚡As a Full stack AI SaaS developer I can support with:
▸ AI-powered SaaS MVPs, product validation
▸ AI agent workflow platforms, workflow automation system
▸ AI-powered Custom CRM system, platform
▸ AI-enabled admin dashboard, panel, machine learning
▸ Role-based workflow platform secure permissions
▸ Secure multi-user web application, scalable backend system
▸ Booking and scheduling platform service businesse
▸ Provider / patient workflow systems healthcare solution
▸ Multi-stage automation workflows complex processe
▸ RAG-powered document intelligence, search system
▸ LLM-powered data processing using openai, modern AI tool
▸ AI-assisted analytics, reporting
▸ OCR and PDF processing pipeline
▸ Rule-based insight engines
▸ Secure backend API development, Third-party API integration
▸ Multi-tenant SaaS platforms workspace isolation
▸ Dashboard, data visualization system
▸ HIPAA / GDPR-compliant platform
⚡ MY CORE STACK as a Full stack Web Developer | Full stack developer React Node | Full stack Developer AI
React, Next.js, Node.js, Python, JavaScript, Supabase, PostgreSQL, MySQL, MongoDB, AWS, Docker, nginx, Stripe, AI tools like Openai, Claude, LangChain. I also work with laravel, PHP when a project requires a Full stack developer laravel or integration into an existing system.
As a Full stack developer SaaS ( full stack developer ai ) I cover full product delivery: frontend, backend, infrastructure, APIs, and AI logic. I can work as a React developer, Front end developer, Backend developer, Web developer python, React web developer, Full stack web developer depending on the scope. On the frontend, I work with HTML, CSS 3, Tailwind CSS, Vue.js, Angular, Bootstrap for specific stacks or legacy support.
For SaaS products, I often work with full stack node.js react development, building React and Node.js SaaS applications with dashboard, admin panel, and secure APIs. I also work as a Full stack developer node | Full stack developer node js, focusing on performance and scalable architecture.
When AI is involved, I support projects as a python developer with Python AI backend development, including RAG systems, OCR pipelines, document processing, intelligent automation
I also have experience working with mobile app development and can contribute as a React Native developer, building cross-platform apps, react native integrated with backend systems and APIs
In addition, I've worked as a full stack developer shopify, wordpress developer workflows, python full stack developer, front end developer react, full stack developer php and niche integrations, including Lazada developer-related marketplaces, helping businesses extend their platforms with custom features, payments and automation.
What sets me apart is product thinking. As a technical partner, cto-level contributor, I help define Software Architecture & Design, avoid unnecessary complexity, build solutions that are ready for real users.
I also collaborate on web design, ui ux web design, ux designer, ui ux web designer workflows to ensure products are intuitive and easy to use.
If you need full stack web development, full stack saas architecture, AI-powered features, reliable Full stack website developer, Full stack developer saas, Full stack AI SaaS developer, I can help you build and scale your product.
💬 Message me with your idea, I’ll share a relevant case, technical approach, clear estimate from a full stack developer.
Aleh V.
Certified Web Developer | Figma to HTML | Responsive Design
Warsaw, Poland
$17/hr$17 per hour5.0 (2) 3 jobs $200+ total earnings
👋 Hi!
👉 My name is Aleh, and I'm a web developer who is passionate about creating websites. I strive for perfection and am always learning to ensure that my projects are not only aesthetically pleasing but also functional and user-friendly. I use modern technologies and web development methods to create websites, and I'm excited to help you with your unique project! 🚀
🟡 I use:
• HTML & CSS / SCSS
• JavaScript / jQuery
• SVG / Icomoon
• Google Fonts
• Gulp / Webpack
• BEM
🟡 Coding Expertise:
• Cross Browser & Device Compatibility
• W3C Markup Validation Service
• Google PageSpeed Insights
🔥 High quality and on time!
When working with me, you'll receive a website with clean, cross-browser, valid code based on your PSD, XD, or Figma layout, compatible across all devices.
By choosing me, you save time, 💰 money, and avoid stress. With a fully adaptive design based on your PC layout, plus minor design edits included in the price, we'll ensure smooth collaboration without unnecessary disputes.
🟡 You will get:
• Complete HTML Code Of the Provided File.
• Clean & SEO-Friendly Code.
• Fully responsive design.
• BEM Methodologies.
• SASS/SCSS.
• JavaScript Effects – pure JavaScript (Slider/Tabs/Spoller/Popup/Select).
• Fresh and modern code with W3C validation.
• HAND TYPED Code.
• Cross-Browser Compatible.
• High Performance in Speed.
• All code is HAND CODED.
• CSS3 Animations.
• GSAP Animations.
• Barba.js Animations.
🏆 Why Choose Me?
• 100% product assurance
• Support after Delivery 🤝
📩 Feel free to message me, and let's discuss your vision!
Ihor N.
HTML Email Developer | HTML developer | Frontend developer
Warsaw, Poland
$20/hr$20 per hour5.0 (151) 231 jobs $40K+ total earnings
Transform your digital designs into stunning, responsive HTML with my expert coding skills. I specialize in converting PSD, XD, and Figma designs into HTML, crafting visually captivating and universally compatible newsletters and email signatures optimized for platforms like Mailchimp, Stripo, MailerLite, SendGrid, Mailjet, Marketo, Customer.io or any other CRM. Additionally, I design high-performance landing pages and offer professional conversion services, including HTML to PSD, Figma to HTML, and Lob templates. My proficiency in HTML, CSS, and JavaScript ensures the delivery of visually appealing and highly functional digital assets.
Services I Provide:
✅ HTML Development: Craft responsive HTML newsletters, email signatures, and transactional emails.
✅ Design-to-Web Conversion: Transform Figma, PSD, Adobe XD, and PDF designs into functional web pages or HTML documents.
✅ Email Campaign Management: Plan, manage, and execute email campaigns using platforms like MailChimp and other email marketing tools.
✅ Template Development: Create editable and reusable templates for platforms such as Mailchimp, Stripo, MailerLite, SendGrid, Mailjet, Marketo, Customer.io or any other you are using.
✅ Lob Templates: Develop and implement templates for Lob to meet your communication and mailing needs.
Why Choose Me:
✅ Comprehensive Testing: I rigorously test emails across platforms, including Outlook, Gmail, iPhone, and Android, ensuring flawless display and functionality.
✅ Optimized Email Code: I design emails using well-structured tables and inline CSS for easy maintenance and template integration, leveraging Zurb Foundation for Emails for consistency.
✅ Lightweight Design: Craft web pages optimized for a PageSpeed score of 90+ to ensure an exceptional user experience.
✅ Efficient JavaScript: Write clean, modular JavaScript using ES6 for enhanced functionality and easier maintenance.
✅ Streamlined CSS: Optimize CSS by removing redundancies and simplifying code for improved performance.
✅ Modern Image Optimization: Use advanced formats like AVIF and WebP to achieve faster load times and high visual quality.
Mykola R.
Senior JavaScript & AI Engineer
Krakow, Poland
$45/hr$45 per hour5.0 (19) 26 jobs $400K+ total earnings
With 15 years in software engineering, I’ve been specializing in:
front-end -> back-end -> system architecture -> AI & automation
I specialize in developing production-ready web applications, SaaS products, combining classic engineering discipline with modern AI tooling (Claude Code).
What I do best:
• Full-Stack Development
- Node.js, Next.js
- API design & backend architecture
- Scalable, maintainable systems, serverless setups
- Firebase, MongoDB, PostgreSQL
• AI Solutions & Bots
- Custom AI agents (OpenAI, Gemini, Claude)
- Chatbots, voice bots (RetellAi, Bland AI, Synthflow, vapi)
- AI integrations into existing products
• Automation & No-Code / Low-Code
- n8n, Make, etc.
- API orchestration, workflows, data pipelines
- Replacing manual ops with reliable automation
Background:
- Migrated large production systems from old technologies to modern solutions
- Designed and built APIs from scratch
- Developed dozens of SaaS apps, Telegram bots and a mobile app (check EatScan in App Store)
How I work:
- Clear communication
- I ask the right questions early
- I deliver what we agree on
- I’m comfortable owning a feature, or the whole product
If you need:
- a senior engineer who can work independently
- an AI feature that actually solves a business problem
- automation that saves time instead of creating chaos
- we’ll get along just fine 😊
How it works
Post a job for freePost a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
KD
Kim Darling
Verified
Emerald Tiger
“Upwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.”
DM
David Merry
Verified
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
KK
Katja Krohn
Verified
Summa Linguae
How do I hire a HTML Developer in Poland on Upwork?
You can hire a HTML Developer in Poland on Upwork in four simple steps:
Create a job post tailored to your HTML Developer project scope. We'll walk you through the process step by step.
Browse top HTML Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top HTML Developer profiles and interview.
Hire the right HTML Developer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a HTML Developer?
Rates charged by HTML Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a HTML Developer in Poland on Upwork?
As the world's work marketplace, we connect highly-skilled freelance HTML Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream HTML Developer team you need to succeed.
Can I hire a HTML Developer in Poland within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive HTML Developer proposals within 24 hours of posting a job description.