Full Stack Engineer (Remote: Vietnam)

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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 hiring a mid-level full stack engineer whose primary responsibility is frontend development: the React Native driver app and Mapbox GL JS map features, as well as an admin portal. Backend work in .NET might be a secondary part of the role.
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 engineering experience
Strong experience with React Native for mobile app development
Strong experience with Mapbox GL JS or a comparable mapping/geospatial library (Leaflet, Google Maps SDK)
Working proficiency in C#/.NET - API design, services, data pipelines
Comfort working with realtime/streaming data (WebSockets, telemetry, sensor data)
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$-16$