Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted.We are looking for a Senior Fullstack Engineer (Polish-speaking).Start date: ASAPEnd date: end of February 2026Hourly rate: 140 - 165PLN/hProject description: Implementation of an internal R&D project as part of building a composable stack architecture in a B2B2C application.Main Responsibility: Frontend architecture and building a reusable UI component system.RequirementsApply if you:Are native Polish-speaker or have a good command of written and spoken Polish (at least B2+).Have a good command of written and spoken English (at least B2). Have expertise in frontend architecture, especially in React. Documented experience in creating and maintaining Design Systems from scratch in collaboration with the UX/UI team. Have experience with building from scratch system design libraries. Have experience with Storybook, React/Next.js, Design System development, TypeScript. BenefitsWhat's in it for you? Becoming a Netguru Freelancer means: 100% remote, flexible work. Work with an experienced team of developers and continuous development of your hard and soft skills. Dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes. Here's what you can expect from the recruitment process: We would like to know you better, so we will invite you for a meeting with our recruiter. Next, you'll be invited to an interview and pair programming with one of our Developers. If everything goes well, you will meet our Engineering Manager at the final interview. Don't hesitate and apply right away!At Netguru, we're committed to creating an inclusive environment for everyone. If you require any disability-related adaptations during the recruitment process, please let us know. We're here to help!