Danfoss - Senior Frontend Developer

Role overview

Senior Frontend Developer to help stabilize and further develop an existing cross-platform web application that communicates with hardware devices via a dedicated (proprietary) network protocol.

Responsibilities

• Develop and maintain a frontend application built with React and JavaScript
• Support stabilization of the current solution and identify architectural issues
• Work on client–device communication using a proprietary protocol
• Collaborate with backend and hardware/embedded teams
• Analyze and refactor code shared across web, desktop, and embedded environments
• Contribute to designing cross-platform solution architecture
• Support the team in making technical and architectural decisions
• Develop a desktop application using Electron (in addition to the web app)

Requirements

• Strong experience as a Senior/Lead Frontend Developer
• Advanced React and JavaScript skills
• Electron experience
• Experience integrating applications with devices / hardware (e.g., IoT, embedded systems, device communication)
• Understanding of cross-platform challenges (web / desktop / embedded)
• Ability to work with low-level system communication logic (proprietary or similar protocols)
• Experience analyzing and refactoring complex existing systems
• Good understanding of backend architecture for collaboration

Nice to have

• TypeScript

Location / work model

• Rzeszów, Poland
• Hybrid: 2 days per week onsite

Compensation

• 1100–1150 PLN/day (B2B)