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Senior Mobile Developer

3 days, 13 hours ago
Lithuania
Full-time
Senior
Mobile Engineer
Mobile Development
Agile Android CI/CD GitHub Actions GraphQL iOS Jetpack Compose Kotlin REST API Swift SwiftUI
Apply Now
Numan

Numan

Numan is a digital healthcare company focused on men's health, offering blood tests, hair loss, and erectile dysfunction treatments. They provide personalized healthcare plans to alleviate symptoms and address root causes, all in one digital platform. ...

Health Care Providers & Services
51-200
Founded 2018
$73M raised
View All Jobs 3

Description

  • Design, build and ship mobile features from technical scoping through release and post-launch monitoring.
  • Write production-quality native code in Swift/SwiftUI or Kotlin/Jetpack Compose with strong test coverage.
  • Evolve mobile architecture, including modularisation, state management, networking, offline behaviour and cross-platform patterns.
  • Collaborate with product, design and backend engineers to create simple, accessible patient experiences and secure APIs.
  • Own app quality by improving crash rates, performance, startup time and WCAG accessibility.
  • Improve mobile delivery through CI/CD, automated testing, feature flags, phased rollouts and App Store/Google Play release management.
  • Protect special-category health data through secure storage, authentication and privacy practices aligned with UK GDPR and healthcare requirements.
  • Conduct code reviews, create technical documentation and RFCs, mentor engineers, and establish team standards.
  • Interview candidates and help grow the mobile engineering team.
  • Use AI coding assistants responsibly to improve delivery speed while maintaining quality.

Requirements

  • 5+ years of professional mobile app development experience, including shipping and scaling a consumer app on the App Store or Google Play.
  • Deep native development expertise in Swift and SwiftUI for iOS or Kotlin and Jetpack Compose for Android.
  • Working knowledge of the other mobile platform (preferred).
  • Strong understanding of mobile architecture, such as MVVM, unidirectional data flow, dependency injection and modularisation.
  • Experience with unit, UI and snapshot testing and building testable code.
  • Experience with mobile CI/CD and end-to-end release management using tools such as Fastlane, Bitrise, GitHub Actions or Xcode Cloud.
  • Experience integrating REST or GraphQL APIs, including authentication, caching and error handling.
  • Track record of owning large features or product areas and improving engineering practices.
  • Experience mentoring engineers and providing constructive code reviews.
  • Clear communication skills and experience working in agile, cross-functional teams with product and design.
  • Understanding of privacy and accessibility requirements in health products.

Benefits

  • Share options.
  • 25 days of holiday plus bank holidays, increasing to 30 days with tenure, plus an additional two weeks off at the fifth anniversary.
  • Vitality health insurance.
  • Enhanced maternity and parental leave.
  • Generous pension contributions.
  • Flexible working options and a dog-friendly Farringdon office.
  • Employee assistance programme with therapy, financial planning and discounts.
  • Personal training and development budget through Learnerbly.
  • Wellhub membership, cycle-to-work scheme, season-ticket loan and electric-car salary-sacrifice scheme.
  • Birthday day off, paid volunteering days and discounts on Numan products for friends and family.

Interested in this position?

Apply directly on the company website

Apply Now

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