Senior Android Developer

Senior Android Developer – Kotlin, Jetpack

£90,000 – £100,000 DOE
London Hybrid/On-site 4 days

A fast‑growing London startup looking to change education through ML‑powered tutoring. Having successfully launched an iOS app last year, they are now looking for a talented Senior Android Developer to help build the next phase of the journey. You will be building a brand new Android app from scratch and ground up, at a time that is pivotal for their next stage of growth and be able to shape the future of an ambitious product which will be used by millions.

• Lead the end‑to‑end development of our Android app from the ground up
• Design and build a scalable mobile application capable of handling millions of users
• Define architecture, tech stack, and engineering best practices
• Develop CI/CD pipelines and testing frameworks for rapid, reliable delivery
• Collaborate with ML engineers to integrate models into the mobile experience
• Build features handling rich data types (text, audio, video, images)
• Work closely with product, backend, iOS, and design teams

Essential:

• Strong experience building Android apps from scratch
• Expert‑level Kotlin and Jetpack Compose
• Deep understanding of coroutines, concurrency, and multithreading
• Experience with architecture design and trade‑off decisions
• Solid grasp of clean code and scalable API integration (REST, HTTPS)
• CI/CD pipeline experience (e.g. Git Hub Actions, CircleCI)
• A strong university background in computer science (Bachelor(s)/Masters/PHD) from a top tier university is essential

Desirable and nice to haves:

• Java or iOS experience
• Background in EdTech or language learning products
• Multilingual skills
• Contributions to the tech community (talks, blogs, etc.)

• Be part of a startup building something meaningful from the ground up
• Have freedom to experiment, innovate, and shape the product
• Be part of a collaborative, product‑focused team

If you’re excited by the idea of owning a product, working with cutting‑edge ML, and shaping the future of education, let me know