Hire the Best Product Developers
in Poland

There is a specific kind of web development that many engineers avoid the kind where the software must scale seamlessly under heavy usage, integrate with complex APIs, handle sensitive business data, and still deliver a polished, intuitive experience for clients and end-users alike. That is exactly the intersection I have built my career in. With 8+ years of full-stack development experience, I have shipped Healthcare SaaS platforms, multi-tenant marketplaces, internal dashboards, and scalable web applications that grow with your business. Each project demanded a level of technical depth and product precision beyond generic web app development. Healthcare SaaS is where my experience is most focused. I have worked on patient management systems, telehealth platforms, and healthcare operations dashboards designed to handle sensitive patient data and support high-traffic production environments. These systems are typically built around strict access control, audit logging, and healthcare-oriented data workflows to ensure reliability and data integrity. In these applications, I have integrated scheduling systems, EHR-style workflows, secure messaging between patients and providers, as well as third-party services such as payment gateways, insurance-related billing flows, and external healthcare APIs. Across these projects, I have consistently applied compliance-aware architecture principles, including role-based permissions, encrypted data handling, and structured audit trails to support healthcare-grade requirements and operational transparency. ► Complex Web Workflows: • Multi-role dashboards for agents, managers, and clients with dynamic permissions • Real-time chat, notifications, and task workflows to streamline operations • Integrated payment flows with Stripe and PayPal, including subscription models and usage-based billing • Analytics pipelines to track engagement, property trends, and lead conversion metrics ► Scalable & Optimized Architecture: • Server-side rendering and static generation in Next.js for speed and SEO • API design using GraphQL, REST, and WebSockets for live updates • Cloud-based solutions leveraging AWS, Firebase, and Supabase • CI/CD pipelines using GitHub Actions and automated deployment workflows ► Tech Stack: • Frontend(SaaS Product Layer): Next.js, React, TypeScript, TailwindCSS, Chakra UI • Backend(MVP & API Layer): Node.js, Express, NestJS, Python, FastAPI, Serverless Functions • SaaS Data Layer(Multi-tenant ready systems): Supabase, MySQL, PostgreSQL, MongoDB, data modeling for SaaS products • DevOps & Scaling(Production-ready MVPs): Vercel, AWS, Netlify, Docker, GitHub Actions, CI/CD pipelines • Product Integrations (Revenue & Growth systems): Stripe billing, third-party APIs, auth systems (JWT, OAuth), analytics tools If you are building a Healthcare SaaS platform, marketplace, or any scalable web app and need an engineer who has shipped full-stack solutions end-to-end, not just studied them , let’s talk. I am selective about the projects I take on, and I’d be glad to review your requirements and tell you exactly how I’d approach your MVP or product launch. ► Keywords: Healthcare SaaS Development, Property Management Software Development, MLS Integration & IDX Integration, Multi-Tenant SaaS Architecture, SaaS MVP Development, Full-Stack Web Development, Next.js Development, React.js Development, TypeScript Development, Node.js Development, NestJS Development, Serverless Application Development, API Development & Integration, REST API Development, GraphQL API Development, WebSocket Real-Time Applications, Dashboard Development, Admin Panel Development, CRM Integration, Stripe Payment Integration, PayPal Payment Integration, Subscription-Based SaaS Platforms, Property Analytics Dashboards, Lead Management Systems, AI-Powered Recommendation Systems, Predictive Analytics Applications, Healthcare Lead Scoring Systems, AWS Cloud Development, Supabase Development, Firebase Development, PostgreSQL Database Design, MongoDB Development, Docker Deployment, CI/CD Pipeline Development, GitHub Actions Automation, SEO-Friendly Web Applications, Server-Side Rendering (SSR), Static Site Generation (SSG), Responsive Web Design, Progressive Web Applications (PWA), Enterprise Web Application Development, Marketplace Platform Development, Business Process Automation, SaaS Product Architecture, Scalable Web Application Development, Startup MVP Development, Product Engineering, Cloud-Native Application Development, Data Privacy & GDPR Compliance, Secure Authentication & Authorization, Technical Architecture Consulting

Industrial Designer | 60+ Products on Market | 8x Amazon Bestsellers | 6+ Years Experience 🚀 Helping brands turn ideas into profitable products. From concept sketches to production-ready files, I specialize in Gadgets, Home Goods, and Kitchen Appliances that dominate the market. ✅ Full-cycle Product Development ✅ Manufacturing (Injection Molding, CNC, 3D Printing) ✅ High-end 3D Visualization & Animation Let’s build your next bestseller! ⭐️

Selected experience: Bang & Olufsen, Design Storz, ÖSWAG Werft, RUF Porsche Automobile Hi, I'm Michał - an Industrial Designer focused on developing physical products from research and concept to CAD, prototyping, and design for manufacturing. I help startups and product companies turn ideas into functional, well-resolved products, combining technical problem-solving with a strong sense of form, proportion, and aesthetics. Top Rated Plus on Upwork, with 600+ hours spent on long-term physical product development projects. My work is best suited to design-led physical products where appearance, usability, CAD, prototyping, and manufacturing awareness need to come together. I usually look at new product projects through four areas: form, use, build, and make - so the product direction is clear before too much time is spent on detailed CAD. This includes consumer products, drinkware, bottles, containers, lighting, lifestyle objects, ergonomic products, mobility-related concepts, vehicle interior components, drone exteriors, enclosures, and products with light mechanisms or practical constraints. I can support projects through: Research and product direction Concept sketches and form development Industrial design and 3D CAD modelling Prototyping and 3D printing Design for manufacturing Product refinement before production Visualisation and presentation materials I regularly work with Rhino, Fusion 360, SolidWorks, Blender, 3ds Max, Alias, and KeyShot. Depending on the project, I can also support material selection, component integration, prototype testing, supplier communication, and production-focused CAD refinement. My background includes industrial design studies in Kraków, mobility design at FH Joanneum in Graz, experience at Design Storz, and product work connected with Bang & Olufsen and ÖSWAG Werft. One of my strongest studio projects was a police boat concept for an Austrian shipyard, which was selected and built. If you are developing a physical product and need someone who can connect research, form, CAD, prototyping, and practical product development, feel free to send me a message.

I’m a Design Engineer with 20 years of experience in product development -- from concept to manufacturing. My role typically starts before CAD modeling begins: I help clients structure their ideas, define functional and production goals, and translate them into a solid engineering concept My core focus areas: • Early-stage concept development and prototyping • Material selection and cost optimization • R&D and product feasibility analysis • DFMA -- design for manufacturability and assembly • Preparing complete technical documentation (technical specification, BOMs, drawings and schemes) I work best when a client needs not only a 3D model, but a reliable technical solution -- something that can be manufactured without surprises My designs are detailed, logical, and ready for real-world production. I’m deeply familiar with plastic and metal fabrication methods (injection molding, CNC, die casting, sheet metal forming), so I can guide a project from idea to the first prototype and all the way to the factory floor I focus on giving clients not just what they ask for, but what they actually need to succeed in production

As a highly skilled data professional with a strong background in mathematics and applied mathematics from Jagiellonian University, I bring over 12 years of experience as an analyst and seven years as a programmer. My expertise lies in data processing and analysis, with a keen interest in automating and streamlining processes. My technical skills include expert-level VBA, R, and Python knowledge, which I use daily. I also have experience in Machine Learning and Natural Language Processing, having completed an 8-week course in ML and a 6-week NLP course with DataWorkshop. Additionally, I have achieved top percentile rankings on DataCamp's Assessment in R and Python programming skills. Some of my most notable projects include designing and implementing a search engine for pharmaceutical information, creating an Excel-based application for predicting future orders in an extensive retail network, and developing a system for collecting and processing public procurement data in Poland. As a freelancer, I prioritize understanding my client's needs and exceeding their expectations. I pay great attention to detail and am committed to timely delivering tasks. I am fluent in Polish (my native language) and proficient in written and spoken English (upper-intermediate level). I can work up to 120 hours per month, depending on the project requirements. With a proven track record in various data-related projects, I am confident I can deliver excellent results for your business.

With 10+ years of full-stack development, 100+ scalable web apps shipped, and 10,000+ hours architecting Python backends and modern React frontends, I build production-ready systems that scale with your business. My solutions have delivered: * 65% faster page load times through React optimization & server-side rendering * 50% growth in backend performance via Python API optimization & caching * 90% reduction in deployment issues with automated CI/CD pipelines and containerized environments I'm a Top Rated Senior Full-stack developer, specializing in Python for backend and React / TypeScript for frontend - building seamless, secure, and performant web applications from end to end. Why Clients Choose My Full-Stack Expertise * 10+ years developing end-to-end web platforms for startups and enterprises * 100+ successful production deployments across SaaS, e-commerce, fintech, and internal tools Expert in FastAPI, Django, Flask for backend and React + TypeScript for frontend Strong API design, cloud architecture, and CI/CD automation skills Proven results: faster delivery cycles, reduced infrastructure costs, and improved user experience Backend Engineering (Python) * Architecting and developing RESTful and GraphQL APIs using FastAPI, Django, Flask * Database modeling & optimization with PostgreSQL / MySQL / MongoDB / Redis * Authentication & authorization systems (JWT, OAuth2), background workers, cron jobs * Task queues, caching layers, and performance tuning for scalable services Frontend Development (React / TypeScript) * Building high-performance SPAs with React, Next.js, and modern TypeScript architecture * Implementing server-side rendering (SSR) and code splitting for SEO & speed * Component libraries, state management (Redux / Context), and pixel-perfect UI development * API integration, forms, routing, error boundaries, and testing API Architecture & Integrations * Designing clean, secure, and versioned APIs consumed by multiple frontends * Building microservices and internal tools integrated with 3rd-party APIs (Stripe, Auth0, Slack, etc.) * WebSocket & real-time data flows, background processing, and pub/sub systems Tech Stack & Tooling Languages Python · JavaScript (ES6+) · TypeScript · HTML5 · CSS3 Backend Frameworks FastAPI · Django · Flask Frontend Frameworks React · Next.js Databases PostgreSQL · MySQL · MongoDB · Redis Tooling & DevOps Docker · GitHub Actions · GitLab CI/CD · Nginx · AWS / GCP / Azure · S3 · CloudFront Other REST / GraphQL · WebSockets · Celery / RQ · Background Jobs · Testing (Pytest, Jest, React Testing Library) · ESLint · Prettier Recent Wins * SaaS Platform - Built a Python + React platform from scratch; reduced page load times by 62% with SSR and API caching. * E-Commerce Backend - Migrated a monolith to FastAPI microservices; backend throughput improved by 48%. * Internal Dashboard - Delivered a React admin panel with real-time updates and granular RBAC; boosted team efficiency by 35%. * DevOps Automation - Set up CI/CD pipelines and Docker; 90% fewer deployment issues. * Analytics API - Designed a FastAPI backend serving 1M+ requests/day with Redis caching and async I/O. Use Cases * SaaS Platforms - Multi-tenant apps with secure auth, dashboards, and APIs * E-Commerce Backends - Product catalogs, order flows, and payment integrations * Internal Tools & CRMs - Fast admin panels, role-based access, and real-time updates * API-Driven Systems - High-performance backends powering multiple frontends & mobile apps * Modern Frontends - React SPAs and SSR apps with excellent performance and UX Measurable Results * +65% faster frontend load times with code splitting & SSR * +50% backend performance boost using async APIs & caching * +90% fewer deployment issues with containerized CI/CD pipelines * +40% cost reduction by optimizing cloud infrastructure * 2× developer velocity through clean architecture & automation Ready to scale your product with a battle-tested Full-Stack Engineer? Let's build something fast, clean, and production-ready - together.