Senior Mobile Developer

This is a fully remote position, open to applicants in Romania.

📋 Description

• Design, build, and deliver features in the Numan app, taking ownership from technical scoping to release and post-launch monitoring.

• Write high-quality production code in Swift and SwiftUI or Kotlin and Jetpack Compose, ensuring robust test coverage.

• Shape and enhance app architecture, focusing on modularization, state management, networking, and offline behavior.

• Collaborate with product and design teams to transform patient challenges into straightforward, accessible experiences.

• Partner with backend engineers to create efficient and secure API designs.

• Take responsibility for app quality, monitoring crash rates, performance, startup times, and WCAG accessibility compliance.

• Utilize monitoring and analytics tools to identify and resolve issues.

• Enhance the mobile delivery pipeline, including CI/CD, automated testing, feature flags, phased rollouts, and App Store/Google Play release management.

• Safeguard patient data through secure storage, authentication, and privacy-conscious development practices.

• Conduct constructive code reviews and produce documentation, RFCs, and PR descriptions.

• Mentor fellow engineers, share knowledge, and help establish mobile standards and best practices.

• Participate in the interview process for candidates and contribute to team growth.

• Thoughtfully utilize AI coding assistants while ensuring code quality.

• Collaborate within a cross-functional squad alongside product, design, and backend engineers.

• Own features from conception to App Store and Google Play release.

• Deliver significant features across a product area while collaborating with and mentoring other engineers.

⛳️ Requirements

• Over 5 years of professional experience in mobile app development.

• At least one consumer app successfully launched and scaled on the App Store or Google Play.

• Extensive expertise in native development on at least one platform: Swift and SwiftUI (iOS) or Kotlin and Jetpack Compose (Android).

• Familiarity with the other mobile platform is a plus.

• Strong understanding of mobile architecture, including MVVM, unidirectional data flow, dependency injection, and modularization.

• Experience with unit, UI, and snapshot testing, as well as writing testable code.

• Knowledge of mobile CI/CD tools such as Fastlane, Bitrise, GitHub Actions, or Xcode Cloud.

• Proven experience managing mobile releases from start to finish.

• Experience integrating REST or GraphQL APIs, covering aspects like authentication, caching, and error handling.

• Demonstrated ability to own large features or product areas while enhancing team engineering practices.

• Experience mentoring engineers and providing constructive code reviews.

• Ability to communicate clearly with both technical and non-technical stakeholders.

• Comfortable collaborating closely with product and design teams.

• A strong sense of care for patients, coupled with an understanding of privacy and accessibility in healthcare products.

• Experience working within an agile team, delivering in sprints.

• Knowledge of UK GDPR and healthcare regulations.

• No specific educational qualifications are required.

🏝️ Benefits

• Share options.

• 25 days of holiday, plus bank holidays, increasing to 30 days the longer you remain with Numan.

• Health insurance through Vitality.

• Electric car salary sacrifice scheme in partnership with Octopus.

• Enhanced maternity and parental leave.

• A day off to celebrate your Birthday.

• Nursery benefit provided by YellowNest.

• Employee assistance program, including access to therapy, financial planning, and discounts.

• Generous pension plan with contributions from both employee and employer.

• Flexible working arrangements, including a dog-friendly office in Farringdon.

• Personal training and development budget via Learnerbly.

• Wellhub membership, granting access to over 2,000 locations across the UK.

• Cycle to work scheme.

• Season ticket loan available.

• Discount on Numan products for friends and family.

• Paid volunteering days.

• Additional 2 weeks of vacation after reaching the 5th anniversary with Numan.