Senior Mobile Engineer in London

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Job Description
Senior Mobile Engineer
Hybrid
We're looking for a Senior Mobile Engineer to take ownership of a critical mobile platform transformation. This is a hands-on, high-autonomy role where you'll architect a new React application from the ground up while stabilising and evolving an existing Kotlin Android app used in live rail environments.
If you enjoy working across both greenfield builds and complex Legacy systems, and thrive in environments where your technical decisions have real-world impact, this role is for you.
Skills required:
6+ years of mobile engineering experience
Strong Kotlin expertise (Clean Architecture, MVVM, DI, Coroutines/Flow)
Proven React experience beyond UI ( modules, Bridge/JSI, performance)
Experience integrating React into an existing Android codebase (brownfield)
Track record of contributing to or leading mobile platform migrations
Ability to make architectural decisions in high-risk, live environments
Comfortable navigating ambiguity and switching between greenfield and Legacy work
Strong communication skills and experience in remote, cross-functional teams
Desirable skills:
Experience migrating from to cross-platform apps
Background in transport, logistics, or regulated industries
Familiarity with Android performance profiling tools
Experience in B2B SaaS products
Exposure to iOS/Swift architecture
Benefits included
Private healthcare after probation (including children)
Hybrid working model
25 days holiday
Volunteering leave
Free flu jab for you and your family
Senior Mobile Engineer
Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for interview will be contacted.
Proactive Appointments Limited operates as an employment agency and employment business and is an equal opportunities organisation
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If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.
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Location:
London
Job Type:
FullTime
Category:
Engineer, Senior, Engineering

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