Senior iOS Developer

Requirements:

• At least 6 years of professional iOS development experience.
• Strong Swift skills and in-depth knowledge of SwiftUI and UIKit.
• Expertise in iOS architecture patterns such as MVVM and Clean Architecture, with the ability to make and explain architectural decisions.
• Hands-on experience with XCTest unit testing and XCUITest UI testing, including improving test coverage.
• SDK development experience, including API design, versioning, and backward compatibility for third-party users.
• Secure coding experience, including Keychain, biometric authentication, certificate pinning, and encryption.
• Familiarity with iOS CI/CD pipelines such as Fastlane, Xcode Cloud, or Jenkins.
• Experience with App Store submissions, provisioning profiles, and code signing.
• Working knowledge of REST API integration and JSON parsing.
• Experience with Git and collaborative development workflows.
• Proficiency with performance profiling tools such as Instruments and Xcode debugging tools.
• Demonstrated experience mentoring developers and leading code reviews.
• Preferred: experience in banking, fintech, payments, or secure transaction handling, including PCI-DSS.
• Preferred: Apple Wallet or PassKit integration experience.
• Preferred: familiarity with accessibility standards, including WCAG and VoiceOver.
• Preferred: experience in client-facing managed services with formal acceptance criteria and SLAs.
• Preferred: knowledge of static analysis and code quality tools such as SwiftLint and SonarQube.
• Preferred: experience with crash reporting and analytics tools such as Firebase Crashlytics or Sentry.
• Preferred: experience supporting regulated or compliance-driven release cycles.
• Preferred: experience as a technical lead or owning end-to-end feature or module delivery.

Responsibilities:

• Design, develop, and maintain native iOS applications and SDK components using Swift, SwiftUI, and UIKit.
• Lead technical design and architecture for key features and modules, prioritizing scalability, maintainability, and security.
• Implement features to meet client-approved requirements and acceptance criteria.
• Maintain compatibility with current iOS releases and supported older OS versions.
• Integrate securely with backend APIs, third-party SDKs, and banking or payment infrastructure.
• Manage app signing, provisioning profiles, and App Store submissions.
• Improve app performance, memory use, and battery consumption.
• Mentor junior and mid-level developers on best practices, code quality, and testing.
• Write unit tests for new code using XCTest, targeting at least 80% code coverage, and create XCUITest coverage for critical user journeys.
• Define test strategies that cover edge cases and failure scenarios; conduct exploratory testing across devices and iOS versions before QA handoff.
• Test the security of sensitive data handling, including tokenization, biometric authentication, and secure Keychain storage.
• Verify features against acceptance criteria, document test cases and results, and support release sign-off.
• Lead code reviews focused on testability, edge cases, and maintainability.
• Reproduce and resolve defects identified by QA or the client within SLA timelines.
• Own regression testing strategy and coordinate test plans with QA to meet release acceptance criteria.
• Conduct performance and load testing for SDK components used by partner applications.
• Own release readiness for assigned features across recurring app and SDK release cycles.
• Prepare release notes, known-issues documentation, and rollback plans; coordinate readiness checks with QA and the Product Owner.
• Analyze and address client rejection feedback, and provide technical risk assessments and timeline estimates to leadership.
• Coordinate with Android and backend/API teams, communicate constraints and dependencies, participate in Agile ceremonies, and serve as the escalation contact for owned features.

Technologies:

• AI
• API
• Android
• Backend
• CI/CD
• Cloud
• DevOps
• Fastlane
• Firebase
• Git
• Support
• JSON
• Jenkins
• Mobile
• MVVM
• Product Owner
• REST
• Security
• Sentry
• Swift
• UIKit
• Xcode
• iOS
• UX UI Design
• Blockchain
• Matrix
• Project Manager

More

We are Synechron, a global consulting firm using digital, creative, and technology solutions to help transform businesses. Our work spans AI, consulting, digital, cloud and DevOps, data, and software engineering, with research and development through our FinLabs. We have more than 17,000 employees and 58 offices across 22 countries, and our teams serve leading financial services and technology organizations. We are seeking a Senior iOS Developer to help deliver a mobile application and companion SDK for a major financial services client, supporting multiple releases each year and high-quality client acceptance. For roles based in Charlotte, NC, or Plano, TX, the stated base salary is $115,000–$120,000 per year, plus benefits; compensation varies by location and other factors. We offer competitive compensation and benefits, including paid annual leave, sick leave and holidays, parental leave, insurance, retirement savings, higher-education certification support, and region-dependent commuter benefits. Our employees also have access to training, Udemy for Business, coaching through our FinLabs and Centers of Excellence, opportunities to work abroad, and projects with leading banks, financial institutions, and insurers. We value an approachable, diverse global culture and provide flexible work arrangements, mentoring, internal mobility, and learning and development opportunities. We are an equal opportunity workplace and affirmative action employer, and we make employment decisions based on business needs, role requirements, and individual qualifications.

last updated 43 week of 2026