Hire the Best Software Design Freelancers
in Poland

Hi there! 👋 As a dedicated Full Stack Developer and SaaS Developer, I focus on engineering Custom Business Applications and production-ready software that holds up under real-world usage. My commitment to quality and client satisfaction is reflected in my 100% Job Success score on Upwork. My work sits at the intersection of software developer, web developer, and SaaS platform builder, with a 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. In the past few years, I’ve integrated an AI-first mindset into my workflow, using Python to build intelligent automations and LLM-driven features. 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 software developer and SaaS development expert allows me to think beyond features and focus on architecture, reliability, and operational stability from day one. Many of the platforms I build include Healthcare applications, CRM, ERP, and custom portals where permissions, data integrity, and business rules are critical. In my day-to-day work, I design and implement backend services, APIs, and data models that power SaaS and complex web applications. I regularly work with Node.js, PHP (Laravel), 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 and CTO, I ensure these backend systems integrate cleanly with frontend applications and third-party APIs. When required, I support react developer and mobile app developer workflows to deliver seamless user experiences. 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 involves building internal platforms and API-first systems. In these projects, I often collaborate with teams focused on saas marketing by designing clean data pipelines and backend logic. My versatility as a wordpress developer and web developer allows me to bridge the gap between marketing sites and complex backend systems, including integrations with legacy CMS or WordPress-based systems when required. Clients typically work with me when they need: a Full Stack Developer laravel who can own frontend and backend a SaaS Developer who understands long-term scalability constraints a Backend Developer experienced with Node.js, PHP, and Python 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 from a senior web developer a wordpress developer for custom theme/plugin logic and API integrations SaaS platforms designed to support growth 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 (CRM & ERP) -authentication, authorization, and permissions -API-first backend system design -integrations with external platforms, including WordPress systems -Secure cloud solutions using AWS My core work as a Backend Developer and Full Stack Developer, CTO covers: backend services built with Node.js, PHP, and Python APIs, background jobs, and integrations databases such as PostgreSQL and MySQL modern stacks using tools like React, Vue.js, and Laravel AI-enabled backend features where they add real business value I regularly work on MVP builds as a SaaS Developer, with a focus on solid backend foundations and avoiding short-lived prototypes. Based on scope and timing, I work hands-on as a Full Stack Developer, SaaS Developer, and Backend Developer. Long-term results come from clarity and intentional system design. I focus on delivering software that teams can confidently run, maintain, and scale.

I create state of the art functional designs for those who want to change the World with their business. 🏆 Indigo Design Award 2023 – 🥇 Gold in Apps category, 🥈Silver in Mobile App category and 🥈 Silver in UX, Interface and navigation category. MY CLIENTS SAY: ⭐⭐⭐⭐⭐I was so impressed with the level of attention to detail, as well as Helen’s ability to think through the mission of the company and translate that into a great web design. ⭐⭐⭐⭐⭐I have worked with several designers over the course of my career, and Helen is the best I've worked with. She possesses excellent skill, communication, and service! I can only imagine how skilled she will become as her career progresses! ⭐⭐⭐⭐⭐...I couldn’t be happier with what Helen has done. She successfully turned what was initially an okay-ish concept into a beautiful work of design.... ⭐⭐⭐⭐⭐“Olena has been probably the best freelancer that I have worked with on Upwork...” ⭐⭐⭐⭐⭐“With minimal instructions within a very tight time frame she came up with a logo which completely reflected our vision... ” ⭐⭐⭐⭐⭐“I enjoyed working with Olena on website designing project. Her communication skills are perfect. She's an experienced graphic designer with outstanding expertise...” As opposed to most designers, I actually take the time to think and plan your creations and how they should be conveyed. My designs are well thought out and explained in terms of how I have come the conclusion, why I have used the UX/UI methods that I have, and what recommendations I can provide. This shortens the process of any project, as I am able to quickly establish a working rapport with my clients that produces amazing results. What you get with me is an imaginative and creative Product designer who is punctual on delivery and precise in her work. Otherwise, feel free to contact me and I will do my best to get back to you ASAP. Cheers

I have 20 years of diverse experience in software design and development. I can help you build your product from the ground up, or improve the existing. I can advise on product requirements, UI design and technology. I run a dev agency, we can work in any tech stack. My team is nano-sized, I am leading all the projects myself. That allows for cost-efficiency and flexibility of hiring a freelancer, and the reliability and scalability of a full-service company.

Hi, I’m Adam. I help businesses create professional, consistent brand identities – from logo design to packaging, car wraps, and business stationery. WHY WORK WITH ME •Clear, minimal, and professional design style •Experience across multiple industries such as food and beverages, transport, retail, and beauty •Reliable communication and on-time delivery I believe design should not only look good but also work as a tool for business growth. If you’re looking for someone to craft a strong visual identity for your company, let’s connect! CAPABILITIES Brand Identity • Logo Design & Visual Systems • Brand Guidelines & Asset Development Design & Collateral • Print & Digital Marketing Materials • Packaging & Environmental Design • Website & Landing Page Design

"Working with Andriy was awesome. He helped me out with some bugs on my REACT/NODE website. He completed a task quickly and surprised me with excellent skills. He is a master in his domain, so in case you need a freelancer, Andriy is an A+++ recommendation. Superb!"   - Andrei C. ――――――――――――――――――――――――――――――――――――  • Do you want new shiny website filled with rich functionality?  • CMSs aren't flexible enough for you, you need more features?  • You need someone to figure out and update complex project?  • Interested in custom enterprise solution? Then contact me and I will turn your ideas into reality. Over ten years developing commercial software gives me the insight into implementing robust, secure and maintainable software. Healthcare and finance industries are not foreign to me. Also I can do for you:  ✔ Database development  ✔ DevOps tasks, such as CI/CD, deployments and automation (see my specialized profile)  ✔ Organizing other developers work I'm attentive to details and like to get the job done right. I specialize in React/NodeJS/JavaScript. ―――――――――――――――――――――――――――――――――――― Some of my skills: Programming languages:  • JavaScript  • TypeScript  • C#  • PHP  • Java Frontend:  • React (+Next.js) - with SPA and Server-side rendering  • Redux for JavaScript  • HTML/CSS  • jQuery, Twitter bootstrap  • SPA frameworks (AngularJS, Durandal, Aurelia)  • Universal applications (Server-side rendering)  • CKEditor Backend:  • NodeJS (including Express)  • ASP.NET, ASP.NET MVC, ASP.NET Web Api  • Firebase Databases:  • MySQL  • MS SQL Server  • Oracle  • MongoDB Integrations:  • Google Analytics  • New Relic  • Twitter  • Facebook APIs  • Some AWS (Cognito, API Gateway) Desktop:  • .NET Windows Forms VCS:  • Git  • SVN  • Mercurial Scripting:  • Bash  • Microsoft batch files Other:  • Internet security  • Cryptography  • Vim  • Applied Mathematics background  • GraphQL (+Relay)  • Functional Programming

UX/UI product designer. I create digital experiences for both mobile and desktop applications. In addition, I design unique website experiences and interactions and handle complex design systems for digital product applications. Additionally, I have broad experience as a professional Illustrator, typographer, and graphic designer. It all comes in one package. Suppose you want a unique, high-quality visual language for your products. I can help you on that journey. Working with data and by the data points both on quantitative and qualitative levels helps me to navigate designs at targeted level, test them and iterate for best effects. I know how to balance clients' expectations and general visual strategy for a brand or product. Feel free to contact me if you need design / UX expertise, brand consultancy, or a professional that will help bring your product to a whole new level. I am not an agency, so I am a single-man operation—freelancer with more than a decade of real-life experience in branding and digital product design. I work with international brands as well as with small companies. I am passionate about my work and share that passion with others. Preferred tools of the trade: – Figma – Adobe creative suite – My own imagination Proud member of: Interaction Design Foundation.