iOS Developer

Requirements:

• At least 7 years of professional experience developing native iOS applications with Swift.
• Strong proficiency in Swift, SwiftUI, UIKit, Combine, and iOS SDK frameworks.
• Experience building and supporting enterprise-grade or consumer-facing mobile applications at scale.
• Deep understanding of MVVM, MVC, Clean Architecture, dependency injection, and mobile design patterns.
• Hands-on experience integrating RESTful and GraphQL APIs, OAuth2/OIDC authentication, and secure mobile development practices.
• Experience with local data persistence technologies such as Core Data, Realm, or SQLite.
• Proficiency with automated testing frameworks, including XCTest and XCUITest, and unit and integration testing methods.
• Experience with CI/CD tools such as GitHub Actions, Jenkins, Bitrise, or Azure DevOps.
• Strong understanding of App Store deployment, provisioning profiles, certificates, and release management.
• Ability to work effectively in agile, cross-functional teams.
• Preferred: experience with recent iOS releases and Apple platform technologies.
• Preferred: knowledge of Objective-C and experience supporting legacy iOS applications.
• Preferred: familiarity with performance optimization, memory management, and profiling applications with Instruments.
• Preferred: experience developing applications in financial services, banking, fintech, or other highly regulated industries.
• Preferred: applications published on the Apple App Store.

Responsibilities:

• Design, develop, and maintain high-performance native iOS applications using Swift and modern Apple frameworks.
• Collaborate with architects and engineering teams to define application architecture, data flow, and integration patterns.
• Use SwiftUI, UIKit, Combine, Swift Concurrency, and current iOS practices to build scalable mobile applications.
• Work with UX/UI designers to create intuitive, accessible experiences for iPhone and iPad.
• Integrate RESTful APIs, GraphQL services, and third-party SDKs while supporting security, reliability, and performance.
• Participate in code reviews, architecture discussions, and technical design sessions.
• Evaluate and adopt Apple ecosystem updates, including new iOS releases, frameworks, and development patterns.
• Mentor junior developers and encourage innovation, collaboration, and strong engineering practices.
• Improve CI/CD pipelines, automated testing, release management, and mobile development standards.

Technologies:

• AI
• Azure
• CI/CD
• Cloud
• CRM
• DevOps
• Flow
• GitHub
• GraphQL
• Support
• Jenkins
• Mobile
• MVC
• MVVM
• Objective-C
• SQLite
• Security
• Swift
• UIKit
• iOS
• UX UI Design
• Web

More

We are seeking an experienced iOS Mobile Developer for our front-end engineering team serving our investment banking and global markets divisions. You will help evolve large-scale mobile applications supporting critical trading, analytics, and AI platforms, partnering with UI/UX designers, product owners, and back-end engineers. Our IB Tech & CRM/Analytics team leads global digitalization across client-facing businesses and corporate functions, working with business leaders and industry experts to advance innovation, revenue, efficiency, and resource allocation. We are also advancing our cloud initiative, replacing legacy on-premises solutions with cloud technologies that provide insights, decision support, and transparency. Jefferies is a global, full-service investment banking and capital markets firm with more than 40 offices, providing advisory, sales and trading, research, wealth management, and asset management services. We welcome applicants from all backgrounds and provide reasonable accommodations as required by law. Compensation considers experience and qualifications. Eligible employees receive a benefits package that may include an annual discretionary incentive and retention bonus, medical, dental and vision coverage, 401(k), insurance, wellness programs, paid time off, paid holidays, and paid parental leave for full-time employees.

last updated 43 week of 2026