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Senior iOS Engineer - Lead Core App Design & Delivery

Tokyo 23 Wards Temporary ¥6,000,000 - ¥8,000,000 per year Foreign Multinational View Job Description
Join a growing mobile team building a high-impact personal finance application within a large digital services ecosystem. You will lead core design decisions, develop robust iOS features, and drive quality through modern engineering practices.
  • Own end‑to‑end iOS development for a high-traffic consumer app
  • Collaborate globally and shape scalable mobile architecture

About Our Client

A leading, large-scale internet services group in Japan offering diverse consumer platforms across media, finance, and lifestyle domains. Their mobile teams build user-focused applications that integrate into a broad digital ecosystem with millions of users.

Job Description

  • Design and build advanced iOS applications using Swift
  • Lead basic design (high-level design) efforts and guide implementation decisions
  • Collaborate with cross-functional teams (product, backend, design) to define, design, and ship new features
  • Implement and maintain applications using MVVM architecture
  • Integrate applications with RESTful APIs and external data sources
  • Write and maintain unit tests to ensure code reliability and performance
  • Identify and resolve bugs while improving application performance and responsiveness
  • Participate in code reviews and contribute to engineering best practices
  • Engage in the full development lifecycle: requirements, design, coding, testing, and deployment
  • Work within an Agile/Scrum environment to deliver high-quality releases



The Successful Applicant

  • Bachelor's degree in Computer Science, Engineering, or related field
  • 6+ years of software development experience, including 4+ years in Swift
  • Proven experience delivering iOS applications (at least one published app)
  • Strong knowledge of iOS SDK, RESTful APIs, and JSON integration
  • Hands-on experience with MVVM architecture
  • Experience with CocoaPods and/or Swift Package Manager
  • Proficiency with Git-based version control (GitHub, GitLab, Bitbucket)
  • Experience writing unit tests and working with testing frameworks
  • Familiarity with CI/CD pipelines and tools
  • Strong understanding of the full mobile development lifecycle
  • Business-level English (e.g., TOEIC 800+)

Preferred Skills

  • Experience with push notifications and cloud messaging APIs
  • Knowledge of Apple's design principles and UI guidelines
  • Strong problem-solving skills and attention to detail
  • Ability to work in a multinational team and manage multiple tasks
  • Japanese reading ability

What's on Offer

  • Opportunity to lead core design in a high-visibility mobile product
  • Collaborative, international engineering environment
  • Exposure to both iOS and potential Android development initiatives
  • Office-based role in Tokyo with a structured Agile setup



Contact
Serena Wu
Quote job ref
JN-062026-7029296
Phone number
+81 3 6627 6137

Job summary

Function
IT
Specialisation
Programming / Development
Specialisation
Technology & Telecoms
Location
Tokyo 23 Wards
Job Type
Temporary
Consultant name
Serena Wu
Consultant phone
+81 3 6627 6137
Job Reference
JN-062026-7029296
Company Type
Foreign Multinational

Diversity & Inclusion at Michael Page

We don't just accept difference - we celebrate it. We encourage applicants from all backgrounds to apply for this role and are committed to building inclusive, diverse workplaces where everyone can thrive. If you require any support or reasonable adjustments during the recruitment process, please let us know.