Senior Application Engineer; Web & Cross-Platform

Position: Senior Application Engineer (Web & Cross-Platform)
Location: Conshohocken

# Senior Application Engineer (Web & Cross-Platform)
Department Technology Employment  Type Full-time

Location

Remote / Hybrid / Conshohocken, PAReports To Director of Engineering##
** About Zero Eyes, Inc.
** Zero Eyes was founded by former Navy SEALs, self-starters, and elite technologists with a mission to reduce the threat and impact of mass shootings and gun-related violence using our best-in-class artificial intelligence (AI) platform that detects visible firearms before there’s a threat. As a member of the Zero Eyes team, you’ll have the unique opportunity to join a forward-facing, purpose-driven company, and your perseverance and individual skill set will become crucial to our mission’s success.##

** About the role
** We’re hiring a
** Senior Application Engineer
** who can ship beautiful, high-performance apps across
** web and native
** platforms. You’ll lead UI architecture and implementation, build cross-platform clients (primarily
** Flutter
* * but also possibly
** Qt/QML
** and other frameworks), and design efficient messaging and cloud integration patterns. We value people who care more about
** truth than winning arguments**, mentor generously, and take personal responsibility for the organization’s success.##
** What you’ll do**
* ** Contribute to the client application architecture
** for web and desktop/mobile (Windows, MacOS, Linux, iOS, Android).
* ** Build great UIs**:
Design systems, component libraries, responsive layouts, accessibility, smooth animation, and state management.
* ** Cross-platform development
** with
** Flutter/Dart
** and possibly other frameworks like
** Qt/QML** (C++/QML), plus selective native interop (platform channels/FFI) where performance or hardware access demands it.
* ** Web application engineering
** using a modern stack (e.g., React/Vue/Svelte, Type Script), with SSR/CSR as appropriate and strong routing/state patterns.
* ** High-performance messaging**: architect and implement real-time data paths (Web Sockets) with back-pressure, reconnection, and offline/edge sync strategies.
* ** Cloud integration patterns**: apply pragmatic designs (pub/sub, CQRS, event sourcing, circuit breaker, bulkhead) for resilient client service workflows.
* ** API design & contracts**: collaborate on REST schemas, versioning, and client SDKs; enforce typed contracts and compatibility.
* ** Performance & reliability**: profiling, memory/CPU/network tuning, video frame budget discipline, error handling, diagnostics, and telemetry.
* ** Security by default**: OAuth2/OIDC, secure local storage/Keychain/Keystore, code-signing, auto-update channels, and privacy-aware logging.
* ** Mentor & multiply**: run design reviews, raise code quality, and level up teammates across UI/UX, testing, and performance.##
** What you’ll bring
*** 6–10+ years shipping production apps; multiple launches across
** web and at least one native platform**.
* Deep experience with
** Flutter** (widgets, isolate usage, build/layout perf, platform channels) and
** Qt/QML** (signals/slots, model–view, QtQuick, C++ bridges).
* Strong web fundamentals (Type Script, modern build tools, state management, routing) and familiarity with one major framework (React/Vue/Svelte).
* Demonstrated
** UI/UX excellence**: component libraries/design systems, accessibility (WCAG), responsive design, motion/animation, and design-tool fluency (Figma/Sketch).
* ** Messaging & data**:
Web Sockets/gRPC/Protobuf, streaming APIs, caching, offline sync; understanding of eventual consistency and conflict resolution.
* ** Cloud-aware client engineering**: practical use of pub/sub (e.g., RabbitMQ), API gateways, and auth flows; comfortable reading cloud diagrams and proposing client-side impacts.
* Strong testing chops: unit, widget, and
**…