Senior iOS Engineer

Senior iOS Engineer

A Senior iOS Engineer will design, build and maintain complex iOS applications using modern patterns and robust networking libraries while ensuring clean architecture and reliable automated testing with XCTest. The role focuses on scalable feature delivery, code quality through Git workflows and collaboration in a hybrid work model for enterprise‑grade mobile solutions.

Location: Minneapolis‑MN

Experience

Required:

10+ years

You must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future. Cognizant will not sponsor work authorization for this role.

• Design and implement advanced iOS application features that deliver secure, intuitive and high‑performing user experiences for enterprise customers.
• Develop and maintain modular iOS components that can be reused across products to accelerate feature delivery and reduce maintenance overhead.
• Optimize application performance by profiling critical paths and tuning networking, rendering, and data storage behaviors to meet strict responsiveness goals.
• Integrate and manage networking libraries to handle complex API interactions, error handling, and offline scenarios while maintaining robust data integrity.
• Collaborate with product managers and designers to refine requirements into clear technical tasks that support business outcomes and customer satisfaction.
• Review pull requests using Git workflows to ensure code quality, consistency, and adherence to engineering standards across the iOS codebase.
• Create and maintain comprehensive XCTest suites that validate core flows, edge cases, and regression scenarios for every major feature.
• Debug complex production issues by analyzing logs, metrics, and crash reports to identify root causes and implement sustainable long‑term fixes.
• Document technical designs, architectural decisions, and key implementation details to support knowledge sharing and onboarding across the hybrid team.
• Coordinate closely with backend and Dev Ops teams to align on API contracts, performance targets, and deployment strategies that support stable releases.
• Mentor junior and mid‑level engineers by providing constructive code reviews and practical guidance on iOS best practices and testing discipline.
• Participate in sprint planning, estimation, and retrospectives to improve delivery predictability and continuously refine the engineering workflow.
• Drive continuous improvement by proposing enhancements to tools, libraries, and processes that make iOS development more efficient and reliable.

• Possess extensive experience in building complex native iOS applications using Swift or Objective‑C with strong understanding of UIKit and related frameworks.
• Demonstrate hands‑on expertise with networking libraries for RESTful communication, including authentication strategies and secure data handling practices.
• Apply solid knowledge of XCTest to design unit tests, UI tests, and integration tests that increase coverage and protect against regressions in critical flows.
• Utilize Git effectively within collaborative workflows, including branching strategies, code reviews, and conflict resolution for large‑scale projects.
• Bring proven experience in hybrid work environments using modern collaboration tools to maintain alignment with distributed cross‑functional teams.
• Exhibit strong problem‑solving skills in diagnosing performance bottlenecks, memory issues, and networking failures within complex iOS ecosystems.
• Show proficiency in designing maintainable architecture such as MVVM or clean architecture that supports scalability and ease of future enhancements.
• Display familiarity with continuous integration practices that incorporate automated test execution and quality checks for every code change.
• Communicate clearly with stakeholders of varied technical backgrounds to translate requirements into feasible and reliable mobile solutions.

Preferred certifications include Apple App Development with Swift certification or equivalent iOS development credential and any Git or version‑control related certification.

Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.