Senior iOS Developer

We areAt Synechron, we believe in the power of digital to transform businesses for the better. Our global consulting firm combines creativity and innovative technology to deliver industry-leading digital solutions. Synechron’s progressive technologies and optimization strategies span end-to-end Artificial Intelligence, Consulting, Digital, Cloud & DevOps, Data, and Software Engineering, servicing an array of noteworthy financial services and technology firms. Through research and development initiatives in our FinLabs we develop solutions for modernization, from Artificial Intelligence and Blockchain to Data Science models, Digital Underwriting, mobile-first applications and more. Over the last 20+ years, our company has been honored with multiple employer awards, recognizing our commitment to our talented teams. With top clients to boast about, Synechron has a global workforce of 17000+, and has 58 offices in 22 countries within key global markets.Our challengeWe are seeking an experienced Senior iOS Developer to join our team delivering a mobile application and companion SDK for a leading financial services client. This role is critical to meeting our contractual release commitments (multiple app and SDK releases annually) with high quality, well-tested code that passes client acceptance criteria on the first submission.Additional Information*The base salary for this position will vary based on geography and other factors. In accordance with law, the base salary for this role if filled within Charlotte NC/ Plano, TX is $115k - $120k/year & benefits (see below).The Role

Responsibilities

Design, develop, and maintain native iOS applications and SDK components using Swift/SwiftUI and UIKitLead technical design decisions and own architecture for key features/modulesImplement new features per client-approved requirements and acceptance criteriaEnsure compatibility with the latest iOS releases and maintain backward compatibility per supported OS version matrixIntegrate with backend APIs, third-party SDKs, and banking/payment infrastructure securelyDrive architecture decisions for scalability, maintainability, and securityManage app signing, provisioning profiles, and App Store submission processesOptimize app performance, memory usage, and battery consumptionMentor mid-level and junior developers on best practices, code quality, and testing disciplineTesting & Quality Assurance (Critical for This Role)Write unit tests for all new code (target minimum 80% code coverage) using XCTestWrite UI/integration tests using XCUITest for critical user flows (login, payment, credential generation/validation)Define test strategy for new features, including edge cases and failure scenariosConduct manual exploratory testing on multiple device types and iOS versions prior to QA handoffPerform security testing for sensitive data handling (tokenization, biometric auth, secure storage/Keychain)Validate against acceptance criteria before marking features "dev complete” reduce rejection risk during client UATDocument test cases and results to support release sign-off documentationLead code reviews with a focus on testability, edge-case handling, and maintainabilityReproduce and fix defects flagged during QA or client rejection within SLA timelinesOwn regression testing strategy to ensure new releases don't break existing functionalityCollaborate with QA team to define test plans aligned with release acceptance criteriaConduct performance/load testing for SDK components used by external partner appsRelease ManagementOwn release readiness for assigned features across recurring release cycles for the mobile app and SDKPrepare release notes, known issues documentation, and rollback plansCoordinate with QA and Product Owner to ensure release readiness checklist is met before submissionRespond promptly to any client rejection feedback with root-cause analysis and remediationProvide technical risk assessments and timeline estimates to leadershipCollaborationWork closely with Android developers to maintain feature parity across platformsCoordinate with backend/API teams on integration requirementsCommunicate technical constraints, risks, or dependencies proactively to Product Owner/Project ManagerParticipate in sprint planning, daily standups, and retrospectivesAct as technical point of contact for escalations related to owned features

Requirements

6+ years of professional iOS development experienceStrong proficiency in Swift, with deep working knowledge of SwiftUI and UIKitProven expertise in iOS app architecture patterns (MVVM, Clean Architecture, etc.) and ability to make/defend architectural decisionsHands-on experience writing unit tests (XCTest) and UI tests (XCUITest), with a track record of driving test coverage improvementsExperience with SDK development — deep understanding of API design, versioning, and backward compatibility for third-party consumptionExperience with secure coding practices — Keychain, biometric authentication (Face ID/Touch ID), certificate pinning, encryptionFamiliarity with CI/CD pipelines for iOS (Fastlane, Xcode Cloud, Jenkins, or similar)Experience with App Store submission process, provisioning profiles, and code signingWorking knowledge of RESTful API integration and JSON parsingExperience with version control (Git) and collaborative development workflowsStrong command of performance profiling tools (Instruments, Xcode debugging tools)Demonstrated experience mentoring other developers and leading code reviewsPreferred, but not required:Experience in banking, fintech, or payments applications (understanding of PCI-DSS, secure transaction handling)Experience with Apple Wallet / PassKit integrationFamiliarity with accessibility standards (WCAG, VoiceOver support)Experience working in managed services / client-facing delivery models with formal acceptance criteria and SLAsKnowledge of static analysis tools and automated code quality gates (SwiftLint, SonarQube)Experience with crash reporting and analytics tools (Firebase Crashlytics, Sentry)Prior experience supporting regulatory or compliance-driven release cyclesPrior experience as a technical lead or owning end-to-end delivery of a feature/moduleSuccess Metrics for This Role Zero critical defects escaping to client UAT for features ownedConsistent achievement of code coverage targets (≥80%)On-time delivery of assigned features within sprint/release commitmentsMinimal rework due to requirement misunderstanding (validated via acceptance criteria review before dev starts)Positive contribution to reducing release rejection rate during the client acceptance windowEffective mentorship is reflected in team code quality and testing maturityWe offer:A highly competitive compensation and benefits package.A multinational organization with 58 offices in 22 countries and the possibility to work abroad.10 days of paid annual leave (plus sick leave and national holidays).Maternity & paternity leave plans.A comprehensive insurance plan including medical, dental, vision, life insurance, and long-/short-term disability (plans vary by region).Retirement savings plans.A higher education certification policy.Commuter benefits (varies by region).Extensive training opportunities, focused on skills, substantive knowledge, and personal development.On-demand Udemy for Business for all Synechron employees with free access to more than 5000 curated courses.Coaching opportunities with experienced colleagues from our Financial Innovation Labs (FinLabs) and Center of Excellences (CoE) groups.Cutting edge projects at the world’s leading tier-one banks, financial institutions and insurance firms.A flat and approachable organization.A truly diverse, fun-loving, and global work culture.S YNECHRON’S DIVERSITY & INCLUSION STATEMENTDiversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and is an affirmative action employer. Our Diversity, Equity, and Inclusion (DEI) initiative ‘Same Difference’ is committed to fostering an inclusive culture – promoting equality, diversity and an environment that is respectful to all. We strongly believe that a diverse workforce helps build stronger, successful businesses as a global company. We encourage applicants from across diverse backgrounds, race, ethnicities, religion, age, marital status, gender, sexual orientations, or disabilities to apply. We empower our global workforce by offering flexible workplace arrangements, mentoring, internal mobility, learning and development programs, and more.All employment decisions at Synechron are based on business needs, job requirements and individual qualifications, without regard to the applicant’s gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.