Android Engineer (London Area)

About Us:We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store experience, powering real-time, context-aware interactions in physical retail environments through beautifully engineered mobile experiences.Role:We\’re looking for an experienced Android Engineer to help with the development of a cutting-edge consumer facing app designed to change the physical in-store shopping experience. You’ll collaborate closely with our team of ML & backend engineers and product to deliver a mobile experience that feels fast, personalised, and deeply responsive to user context. Responsibilities:Architect and implement Android features that include:Real-time & bi-directional communicationOn-device inference using Edge optimised frameworksOffline-aware & offline-first UX flows using prefetching, caching, and background syncProfile, optimise, and tune the app for low latency, efficient memory usage, and battery performanceWork closely with AI & ML team members to build context-driven user experiencesHelp define and evolve a robust mobile architecture using modern patternsWork closely with design & product to ship polished, scalable user interactionsEssential Qualifications:Experience with real-time protocols (eg. WebSockets gRPC, MQTT, SSE or similar)Experience with implementing on-device machine learning (eg. PyTorch Mobile, ML Kit, TensorFlow Lite)Strong understanding of Android performance: lifecycle, coroutines, memory, and threadingFamiliarity with edge-friendly architecture: offline-first, sync queues, reactive flowsComfort working in fast-paced, zero-legacy, product-driven environmentsCuriosity about behavioural data, context-aware design, or next-gen retailNice-to-Haves:Knowledge and/or Experience with Bluetooth & sensor APIsKnowledge and/or Experience working with USB-C connected peripheral devicesExperience in early-stage product design and MVP development