Senior Mobile/Web Developer

We are currently seeking a Senior Mobile/Web developer with at least 4 years of experience to join our team in Mexico City.
This is an exciting opportunity for those who want to work for a stable and well-established company that understands the importance of protecting its customers' assets. We believe that people are our greatest asset and are committed to being an employer of choice in our industry.

Build and ship a cross-platform Installer Application that delivers an offline-first Next.js web UI inside a thin native shell (Capacitor) for iOS and Android, with native Bluetooth Low Energy (BLE) implemented via a Capacitor plugin. The app must support encrypted local storage, resilient sync/queueing, camera-based scanning, and integrations with backend services (CTC) and Salesforce.

• Implement a hybrid architecture: Capacitor native app hosting a Next.js (React + TypeScript) UI in WebView / WKWebView.
• Build and maintain a Capacitor BLE plugin for both iOS & Android
• Expose stable JS APIs, event listeners, and contracts for device discovery, connectivity, data exchange, RSSI, and proximity workflows.
• Deliver offline-first workflows:
• Service Worker caching, background sync/queueing patterns, durable local persistence of install job records.
• Encrypted-at-rest local data using Web Crypto (and native equivalents where appropriate).
• Integrate with backend service APIs.
• Implement camera flows for QR/barcode scanning and job documentation photos (web-based MediaDevices + existing scanner libraries where applicable).
• Build a robust update strategy (bundled UI with optional remote updates guarded by version gates).
• E2E testing on real devices, offline/coverage test scenarios, App Store / Google Play compliance, signing, CI/CD pipelines for both Web and Mobile components.

MUST HAVE:

• Experiencing translating PRD/Requirements into highly scalable, technical design/implementation.
• TypeScript, modern React, ES+, Next.js 14+ (SPA/PWA patterns, routing, Static Site Generation).
• PWA fundamentals: Service Workers, Cache API, offline UX patterns.
• Experience creating layers of abstractions in isolation; SOLID Patterns, etc.
• Capacitor (or equivalent hybrid runtime) and WebView/WKWebView constraints.
• Native mobile development experience iOS (Swift/Obj-C), Android (Kotlin/Java) experience with Bluetooth.
• SCM/Package Managements, Git, Yarn, NPM, Node, etc.
• Preact Signals (or comparable state management patterns suitable for event-driven device telemetry).

STRONG PLUSES:

• Material UI / JSS (or equivalent component/theming systems) and responsive UI design.
• WebSockets and real-time status updates.
• i18n/localization and white-labelling patterns (dynamic branding, multi-region deployment considerations).
• React Native and Mobile release tooling and automation (e.g., Fastlane), store review constraints, privacy disclosures for Bluetooth/camera/location.
• Offline Web storage and sync patterns (Indexed/Watermelon DB), durable queues / retry semantics for “failure queue” workflows.
• Large Monorepo dev workflows, branch integrations, CI/CS collaboration.