Senior iOS Engineer

Responsibilities Design, develop, and maintain production-level iOS applications using Swift (5.x+) Build modern user interfaces using SwiftUI and UIKit while adhering to Apple Human Interface Guidelines Implement scalable and modular architectures using MVVM, Clean Architecture, and dependency injection Manage complex navigation flows using the Coordinator pattern Work with Combine to handle asynchronous data streams and reactive programming patterns Integrate and maintain GraphQL APIs using Apollo iOS, as well as RESTful and WebSocket-based services Collaborate with backend teams on API design, security, and performance Write high-quality unit tests and UI tests using XCTest, following TDD principles when applicable Ensure code quality and consistency through code reviews, SwiftLint, and SwiftFormat Debug and optimize performance using tools such as Xcode Instruments and LLDB Contribute to continuous improvement of development processes, tooling, and best practices Requirements 5+ years of hands-on experience developing and maintaining production iOS applications Expert-level proficiency in Swift (5.x+), SwiftUI, and UIKit Deep understanding of the iOS SDK, Foundation, and Core frameworks Strong experience with Xcode 14+ and modern iOS development tools Proven experience with MVVM and modular, scalable architectures Solid understanding of dependency injection, inversion of control, and SOLID principles Advanced experience with Combine and familiarity with RxSwift Strong knowledge of async/concurrent programming in Swift Experience integrating GraphQL APIs (Apollo iOS) and RESTful services Understanding of API security and authentication mechanisms (OAuth, JWT, tokens) Experience writing unit tests and UI automation tests with XCTest Familiarity with Swift Package Manager (SPM) and CocoaPods Strong focus on clean, maintainable, and readable code Experience with debugging, performance optimization, and code reviews We offer 100% payroll scheme, benefits by law (IMSS, INFONAVIT, 12+ vacation days) Benefits above the law: Vacation premium 50%, 5 PTOs, 3 sick days, 10 guaranteed public holidays per year Major medical insurance, Dental and Vision plan for an employee and direct family members Minor Medical Insurance (Multiservicios Médicos Santander) for an employee and direct family members Life Insurance and funeral expenses 5% savings fund, uncapped (matched by the company in the end of the year) Grocery cards/vouchers (Vales de Despensa) 30 days End of the Year Bonus (Aguinaldo) Opportunity to work on bleeding-edge projects with a highly motivated and dedicated team all over the world Individual career development plan and support from the best experts Professional development opportunities (Linkedin Learning, Cloud certification programs, access to corporate LMS integrated with other learning platforms) Well-equipped office in a business area of Guadalajara (quiet room, games room, air hockey, PS5, Nintendo Switch and Xbox Series X, pool table, ping pong, snacks, smoothies, and much more) Corporate social events (yoga, massages, sport tournaments, discussion panels, technical talks, lunch & learns) Flexible working hours Opportunity to relocate to another country where the company's offices are present. About Us Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India. #J-18808-Ljbffr