FrontEnd Developer - Hybrid P.Nghĩa Đô, HN

• Build 2D mini-games on a canvas/WebGL layer rendered over a live camera feed, with all gameplay values driven by configuration rather than hard-coded.

• Integrate an object-detection model that runs in the browser: model loading and caching, frame sampling, confidence handling, and a fallback path when hardware acceleration is unavailable.

• Implement camera and permission handling across iOS Safari and Android Chrome, including every denial, error and fallback state.

• Keep the frame rate stable on mid-range phones while the camera, the model and the game loop run at the same time.

• Build the surrounding application screens: navigation, progression, inventory and collection views, list and detail screens.

• Load a versioned configuration bundle so content and gameplay values can change without a release.

• Handle unreliable mobile networks: queued submissions, idempotent requests, and UI that reconciles with the server as the source of truth.

• Turn the designer's Figma into a reusable component set, with i18n keys in place from the start.

• 5+ years of experience as a Frontend Developer.

• 3+ years with TypeScript and React; production experience with Next.js.

• Real experience with a Canvas or WebGL render loop — PixiJS, Phaser, three.js or a hand-written requestAnimationFrame loop — including frame budgeting and asset management.

• Touch and pointer handling on mobile web: dragging, held-finger gestures, hit testing, interrupted touch.

• Mobile web performance work: profiling on real devices, memory, jank, and the differences between iOS Safari and Android Chrome.

• Comfortable with browser device APIs such as getUserMedia, the permissions model, orientation and visibility changes.

• Deliberate about failure paths: retries, idempotency, and optimistic UI that reconciles with the server.

Nice to have

• Machine learning running in the browser (ONNX Runtime Web, TensorFlow.js, MediaPipe, transformers.js).

• Camera-based or AR-adjacent products; image-target tracking libraries.

• Games or interactive products for young children.

• PWA delivery, service workers, offline-first patterns.

• In-browser QR scanning or location-based features.

• Receive 100% salary from the onboarding date.

• Participate in company activities: Teambuilding, travel, vacation and other activities.

• Work with large and advanced systems, have the opportunity to develop comprehensive technology skills with complex problems, requiring high accuracy.