Native Kotlin and Jetpack Compose development on a consumer-facing Android app for in-store grocery trips, running on a known device inside live stores. Integrates on-device edge AI (ML Kit, TensorFlow Lite) and uses AI coding tools like Cursor or Claude Code. Reports to the Head of Android.

You will own an existing production React/TypeScript application across web, iOS, and Android, integrating with Python/FastAPI backends and managing CI/CD pipelines. The team builds a computer-vision platform that turns video data into actionable insights. You will drive frontend architecture on a small, collaborative engineering team.

Use Kotlin Multiplatform (KMP), Flutter, or React Native; integrate TFLite/CoreML and real-time protocols (WebSockets, SSE). You'll build consumer-facing mobile apps and client SDKs for behavioral AI retail solutions, collaborating with ML engineers and product designers.

Expedia Group★3.8 (1.2k)· London

You will architect and deliver advanced Android solutions using Kotlin, Jetpack Compose, and MVVM/MVI patterns, and integrate AI/ML capabilities into mobile experiences. This role is on the Search and Recommendations Experience team, which owns the end-to-end search and discovery experience across lodging, cars, activities, flights, and packages on Expedia Group’s travel platform. You will provide technical leadership for native search and discovery and mentor mobile engineers across teams.

Depop★4.4 (61)· London

Depop seeks a Backend Software Engineer for its Search Retrieval team working with Python or Scala, AWS, and modern cloud infrastructure. You'll collaborate with product managers, data scientists, and mobile/web engineers to build search and information retrieval systems serving 1M+ daily active users on Depop's peer-to-peer secondhand fashion marketplace.

Flo Health★4.8 (26)· London

You'll develop iOS features in Swift and Objective-C for Flo, the world's #1 women's health app with 80M+ monthly users, using modern frameworks and internal component systems to build rich, performant interfaces. The role involves ownership across the full mobile product lifecycle—from ideation through release—working on AI-powered cycle predictions and personalized health insights for a privacy-first, clinically-backed platform reaching 1 in 4 women aged 18–44 in the US.

Flo Health★4.8 (26)· London

You'll develop Android features using Java and Kotlin with modern frameworks and in-house components for Flo, the world's #1 women's health app serving 80M+ monthly users across 100+ countries. The role involves building large-scale, polished mobile interfaces, maintaining CI/CD pipelines, and delivering end-to-end product value for a mission-driven team, requiring 7+ years of hands-on Android development experience with proven production apps at scale.

Deliveroo★3.3 (1.5k)· London

You'll design and build production-grade machine learning systems for Deliveroo's search and recommendations platform using Python, PyTorch or TensorFlow, working with recommendation systems, NLP, ranking algorithms, and generative AI. The New Verticals Personalisation team powers customer discovery across grocery, convenience, and retail delivery categories within DoorDash's three-sided marketplace. You'll provide technical leadership across multiple product areas, mentor junior engineers, and help shape product strategy alongside engineering and product leaders.

Deliveroo★3.3 (1.5k)· London

You'll own the full ML lifecycle for Deliveroo's customer support and decision systems, working with Python, Docker, Kubernetes, and CircleCI to build, deploy, and monitor production models including LLM-powered automation and agentic AI projects. The Care team tackles high-impact problems in customer experience and trust within a three-sided food delivery marketplace serving millions globally.

Deliveroo★3.3 (1.5k)· London

You'll design and productionize machine learning models using strong software engineering principles to solve complex problems across Deliveroo's three-sided marketplace. Work spans rider pricing optimization, delivery time prediction, and recommendation systems for grocery and retail discovery. You'll collaborate with software engineers, data scientists, and product managers to ship end-to-end ML solutions driving measurable impact at global scale.