Junior Android Engineer

Algo1; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A stealth-mode AI company in Greater London is seeking an Android Engineer to develop a cutting-edge mobile app aimed at transforming the in-store shopping experience. The role involves building innovative Android features and working closely with machine learning and backend engineers. Candidates should have a solid grasp of modern Android development principles and an enthusiasm for creating resilient applications. This dynamic position offers the opportunity to contribute to the entire app development process in a fast-paced environment.

Qualifications

• Solid grasp of modern Android development principles.
• Interest in building resilient apps and sync strategies.
• Enthusiasm for a fast-paced, product-focused environment.

Responsibilities

• Build and implement key Android features.
• Create smooth offline experiences with caching strategies.
• Collaborate on performance tuning for app efficiency.
• Integrate context-driven features with AI & ML teams.
• Contribute to mobile architecture with best practices.
• Work with design & product teams to ship user interactions.

Skills

Modern Android development principles

Lifecycle management

Coroutines

Threading

Offline-first approaches

Sync queues

Context-aware design

Fast-paced environments

Job description

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 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

• Build and implement key Android features, including real-time communication and bi-directional data flows.
• Create smooth offline experiences by helping to implement prefetching, caching, and background sync strategies.
• Collaborate on performance tuning, ensuring the app runs efficiently with low latency and good battery life.
• Partner with the AI & ML teams to integrate context-driven features into the user experience.
• Contribute to the mobile architecture by applying modern patterns and best practices.
• Work alongside design & product teams to ship polished, scalable, and delightful user interactions.

Essential Qualifications

• Solid grasp of modern Android development principles, including lifecycle management, coroutines, and basic threading.
• Interest in or familiarity with building resilient apps (e.g. offline-first approaches, sync queues, or reactive flows).
• Enthusiasm for working in a fast-paced, product-focused environment without legacy code constraints.
• Curiosity about behavioural data, context-aware design, or the future of retail technology.

Bonus Points For

• Exposure to real-time communication concepts (e.g. WebSockets, gRPC, MQTT, SSE, or similar).
• Interest in Bluetooth, sensor APIs, or connecting code to the physical world.
• Curiosity about how hardware talks to software (like USB-C peripherals).
• A desire to see a product grow from an early concept to an MVP.