Alongside partners with organizations to drive digital transformation and build high-performing tech teams. We're building a real-time facility navigation and asset-tracking platform for industrial and logistics sites - GPS/BLE-based positioning, live forklift and asset overlays, zone/dwell analytics, and a driver-facing mobile app, backed by a distributed-systems (actor-model) backend. The Role We're looking for a Fullstack Engineer with a strong frontend focus to join the development of a real-time, data-driven platform. Most of your work will focus on the React Native driver app, Mapbox GL JS features and the web-based admin portal, while also contributing to C#/.NET backend services when needed. You'll work on interactive, real-time experiences involving live location, sensor and asset data, with a strong focus on performance and usability. Responsibilities: Frontend (Primary) • Build and maintain the React Native driver app: QR onboarding/consent flows, GPS/BLE data display • Implement Mapbox GL JS features: live position overlays, zone/dwell visualization, realtime map layers • Own frontend performance and reliability for realtime, sensor-driven UI Responsibilities: Backend (Secondary) • Build and maintain RESTful APIs and backend services in C#/.NET • Support GPS/BLE positioning data ingestion pipelines • Support telemetry ingestion and zone/dwell analytics processing • Work within an actor-model distributed backend (built on Microsoft Orleans) designed by the tech lead Requirements • 2–5 years of professional software development experience; • Strong experience with React and/or React Native, with solid knowledge of modern frontend development practices; • Experience building interactive, data-driven user interfaces; • Experience with Mapbox GL JS or other mapping/geospatial technologies such as Leaflet or Google Maps is highly valued; • Experience consuming and integrating REST APIs; • Comfortable working with real-time data, such as WebSockets, live updates, telemetry or similar; • Some professional experience with C#/.NET, or a strong willingness to work with it as part of a fullstack role; • Strong written and spoken English for daily collaboration with a distributed team. Nice to Have • Familiarity with distributed systems / actor-model concepts (e.g., Orleans, Akka) • Experience with BLE positioning or beacon technology • Background in industrial, logistics, or IoT/telemetry domains • Security-conscious development practices (authentication, PII handling Benefits • Remote work (Vietnam-based) • Estimated project duration: 19 weeks • Full-time schedule: 8 hours per day, with mandatory availability for at least 4 hours • Freelance / Service Agreement • Hourly Rate: 12$-16$