We’re hiring a React Native/React engineer with deep, production-scale RN experience who can also write native Kotlin to build and maintain custom Android modules when required. You’ll maintain offline-first apps used in challenging environments (at sea) where connectivity is intermittent and local real-time video and device control must remain resilient.

What you’ll work on

1 - An app that gives mariners control of a SmartMast unit!

A LAN/offline first mobile app that connects to and controls a nearby SmartMast unit. It maintains persistent, low-latency, full-duplex communication via WebSockets and ROS 2, while also syncing with an AWS-hosted backend API. Video from the PTZ camera streams over RTSP/SRTP using TCP or UDP. Because the most powerful features run on the local network, strong knowledge of networking and device discovery (e.g., mDNS/zeroconf, addressing, NAT/firewalls, QoS) is also essential.

Tech requirements:

1. React Native
2. Expo
3. Javascript
4. TypeScript
5. SQLite
6. Web Sockets
7. ROS2 Protocol
8. Video streaming libraries
9. RTSP/SRTP
10. TCP/UDP
11. Network discovery (mDNS)
12. Adaptive offline first behavior
13. Unit testing with Jest and experience with automated end-to-end test workflows

2 - An app to help mariners report illegal activity at sea

A multilingual mobile app that enables mariners to document and report illegal activity at sea by securely uploading photos and videos, even offline. A modular, accessible UI delivers a smooth experience, while maps and precise geolocation power on-device validation of each report. The app syncs with an AWS-hosted API (monorepo; Serverless Framework; TypeScript; PostgreSQL) and follows an offline-first strategy to keep devices updated in low-connectivity environments. When needed, native Kotlin modules enable integrations with local IoT devices.

This project also has a web admin page for user management and other integrations.

Tech Requirements:

1. React Native
2. React
3. Expo
4. TypeScript
5. Javascript
6. SQLite
7. Unit testing with Jest and an automated end-to-end test experience
8. Adaptive offline first behavior
9. Network discovery (mDNS)
10. AWS
11. Serverless Framework
12. HTML
13. CSS
14. Familiarity with Geolocation-based algorithms and data formats

Responsibilities

1. Create beautiful, easy-to-use, atomic components. Make them adaptable for internationalization to allow the app to scale as the number of features and languages the app supports grows.
2. End-to-end ownership: feature delivery, performance, reliability, and release operations for both apps.
3. Offline-first architecture: model data for local-first UX (SQLite/Room or similar), implement sync, conflict resolution, and schema migrations.
4. Streaming & media: implement and optimize live video ingest/playback, jitter buffers, reconnection, Adaptive Bitrate Streaming (ABR), and Quality of Service (QoS) telemetry.
5. Kotlin native modules: design and maintain native modules with Kotlin when necessary.
6. Harsh-network engineering: handle satellite/maritime and field conditions such as high latency, packet loss, power/thermal constraints, and others.
7. Security by design: SRTP key management, TLS/DTLS, cert pinning, Android Keystore, and privacy-preserving telemetry.
8. Tooling & quality: tests (unit/integration), CI/CD, profiling, etc.

Minimum Qualifications

1. Bachelor’s degree in Computer Science, Electrical Engineering, or related field.
2. Proven experience in hardware and software engineering, with a strong understanding of product lifecycle management.
3. Familiarity with smart technologies and solutions, particularly in analyzing and supporting deployed systems.
4. Excellent problem-solving skills and the ability to work collaboratively in a fast-paced environment with people across the globe in various time zones.
5. Strong communication skills, both written and verbal, to effectively interact with contractors and stakeholders.
6. 3+ years building mobile apps, 2+ years focused on React Native at scale (navigation, animations, perfect memory/threading management).
7. Strong Android/Kotlin skills with production RN or fully native apps deployed to the Google Play Store.
8. Hands-on with offline-first architectures and local databases (SQLite + ORM/query builders like Kysely, Room, or equivalent).
9. Real-time video experience on mobile:
10. Protocols: RTSP, SRTP; transports: TCP/UDP.
11. Stacks: ExoPlayer, ffmpeg-kit, etc.
12. Concepts: RTP timing, packetization, jitter buffering, keyframe cadence, reconnect/backoff, and Adaptive Bitrate Streaming (ABR).
13. Networking: understanding of sockets, firewalls, mDNS/zeroconf, WebSockets, QoS metrics (latency, jitter, loss, stall rate).
14. Proven testing practice with Jest
15. Comfortable migrating apps from earlier Expo versions to the latest Expo/React Native/Android releases, config plugins, and bare when needed.

Nice to Have

1. ROS2 ecosystem familiarity: ROS2 topics, services, commands, etc.
2. PTZ protocols (e.g., Axis) and camera vendor SDKs.
3. Map rendering, offline tile management, and geolocation-based strategies such as geofencing.
4. AWS Serverless (API Gateway, Lambda, Cognito, S3, CloudWatch), monorepos.
5. Automated E2E testing experience, observability (Crashlytics, Grafana), feature flagging, A/B testing.
6. Comfortable writing automated end-to-end system checks for unit testing during the factory acceptance process.

Benefits

1. Competitive salary
2. Flexible work hours and the option for remote work.
3. Opportunities for professional development and continued education.

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