Senior Application Engineer (Web & Cross-Platform)

# Senior Application Engineer (Web & Cross-Platform)DepartmentTechnologyEmployment TypeFull-timeLocationRemote / Hybrid / Conshohocken, PAReports ToDirector of Engineering## **About ZeroEyes, Inc.**ZeroEyes 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 ZeroEyes 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, TypeScript), with SSR/CSR as appropriate and strong routing/state patterns.* **High-performance messaging**: architect and implement real-time data paths (WebSockets) 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 clientservice 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 (TypeScript, 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**: WebSockets/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 **end-to-end** (Flutter integration tests, Playwright/Cypress), CI pipelines, feature flagging, and analytics instrumentation.* Solid engineering practices: clean architecture, DI, modularization, performance profiling, code reviews, strong Python skills for backend services.* Clear, candid communicator; comfortable writing design docs and ADRs; proven mentoring of other engineers.## **Nice-to-haves*** Desktop packaging & updates (MSIX/Winget, DMG/Notarization, AppImage/Snap), mobile store pipelines, and enterprise distribution (MDM).* Media-heavy or real-time apps (WebRTC, low-latency rendering, GPU-accelerated widgets).* Edge or offline-first patterns; local databases (SQLite/Isar/Realm) and sync engines.* Tauri/Electron, WebAssembly, or Rust/C++ interop for hot paths.* Observability in clients (OpenTelemetry), feature telemetry, and growth experiments (A/B, UX metrics).## **Values*** **No jerks*** **Be authentic*** **Be effective*** **Attention to detail*** **All in, all the time**## **Eligibility*** Must be authorized to work in the U.S. Ability to obtain and maintain a Public Trust or other clearance may be required.## Apply for Senior Application Engineer (Web & Cross-Platform) at ZeroEyes #J-18808-Ljbffr