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Senior Frontend Engineer (React, Microsoft Azure IoT) - (B2B Contract) at Mesh Systems. About Mesh Systems. Mesh Systems are the Connected Product People. . As a trusted Microsoft Partner, we help clients build, scale, and unlock value from their digital products. We specialize in creating scalable, cloud-based systems to process massive data volumes for global clients.. We are currently on an ambitious path to merge IoT with cutting-edge Artificial Intelligence, opening doors to future-proof projects. We're looking for an experienced Software Engineer to work with our engineering teams and help us shape the future of connected technology.. Compensation and Contract Model.      . Model: . B2B Contract (100% Remote).      . Availability: . Collaboration within the Central European Timezone (CET)..      . Hourly Rate (USD): $40 - $50 USD / hour.      . Support: . We provide support with formalities for Polish contractors working with a U.S. company.. What You Will Do. As a Senior Frontend Engineer, you will help in designing and implementing advanced cloud systems for IoT:. Build and maintain. complex React/TypeScript web applications for industrial IoT monitoring and asset management.. Develop . type-safe, scalable UI components.. Implement . robust data fetching and state management. . Collaborate . with backend teams to integrate RESTful APIs and handle real-time asset telemetry data. . Participate . in code reviews and maintain high code quality standards. . Optimize . application performance. . Work . with designers to implement pixel-perfect, responsive UIs across devices. . What You'll Bring. We are seeking an engineer with senior proficiency and architectural understanding of modern user interfaces:. Expert knowledge . of React, TypeScript, and modern JavaScript.. Strong experience. with Vite build tooling and optimization techniques.. Deep understanding . of CSS-in-JS solutions.. Solid experience. writing unit tests with Vitest or similar frameworks.. Experience. with RESTful API integration and handling async operations. . Familiarity. with Git workflows. . Strong understanding. of web performance optimization and accessibility standards. . Excellent . problem-solving skills and attention to detail.. English Proficiency: . Strong communication skills for seamless collaboration with U.S. partners and clients.. Bonus Points. Experience with Azure DevOps and Azure Pipelines for CI/CD.. Experience with Docker containerization.. Knowledge of Azure Container Apps and cloud deployment strategies. . Background in industrial IoT, asset management, or monitoring systems. . Company Location: Poland.