Danfoss - Senior Frontend Developer

Salary: 1100-1150 PLN/day on B2B Remote: remote / hybrid Rzeszów (2 days from the office per week)   Why choose this offer? • Development and maintenance of a frontend application based on React and JavaScript • Support in stabilizing the existing solution and identifying architectural issues • Working with system–device communication (client’s proprietary protocol) • Development of a desktop application based on Electron • Collaboration with backend and hardware/embedded teams • Analysis and refactoring of code shared across web, desktop, and embedded environments • Contribution to designing the solution architecture in a cross-platform environment • Supporting the team in making technical and architectural decisions   Project We are looking for an experienced Senior Frontend Developer to support the team in stabilizing and further developing an existing web application that integrates with hardware via a dedicated network protocol.   The project is complex in nature—the application communicates with hardware devices, and part of the codebase has been designed in a universal way, enabling its use across web, desktop, and embedded environments. Therefore, a strong understanding of such systems and experience working at the intersection of software and hardware are essential.   Expected competences and knowledge • Very strong experience as a Frontend Developer (Senior / Lead) • Advanced knowledge of React and JavaScript (TypeScript is a plus) • Experience working with Electron • Experience working with applications integrating with devices / hardware (e.g., IoT, embedded systems, device communication) • Understanding of challenges related to cross-platform systems (web / desktop / embedded) • Ability to work with more “low-level” system communication logic (proprietary or similar protocols) • Experience in analyzing and refactoring existing, complex systems • Good understanding of backend (in terms of collaboration and architecture) • Ability to work in a highly complex technical environment   Technologies you'll work with • React • JavaScript • TypeScript • Electron   Client – why choose this particular client from the Jit portfolio? Our Client engineers technologies that enable the world of tomorrow to do more with less. They meet the growing need for infrastructure, food supply, energy efficiency and climate-friendly solutions. Their products and services are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. They are also active in the field of renewable energy as well as district heating infrastructure for cities and urban communities. Their innovative engineering dates back to 1933 and today our Client is a world-leader, employing more than 27,000 employees and serving customers in more than 100 countries. They are still privately held by the founding family.   About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.