Senior iOS Architect & Tech Lead

Synechron; Plano (TX); On-site; USD 115,000 - 120,000; Full time

Benefits offered by this job

Competitive compensation

Global mobility opportunities

Paid annual leave

Comprehensive insurance

Extensive training opportunities

Udemy for Business access

Mentoring and FinLabs/CoE support

Job summary

Synechron seeks an experienced Senior iOS Engineer to design, develop, and own native iOS apps and SDK components. You will drive architectural decisions, mentor juniors, and ensure secure integration with backend APIs and third-party SDKs.

You will implement features per client requirements, maintain compatibility with OS updates, and own release readiness, testing strategy, and code reviews to ensure high quality and performance.

Qualifications

• 6+ years of professional iOS development experience.
• Proficient in Swift with SwiftUI and UIKit.
• Strong knowledge of iOS app architecture patterns (MVVM, Clean Architecture) and ability to make/defend architectural decisions.
• Hands-on experience writing unit tests (XCTest) and UI tests (XCUITest), with a track record of driving test coverage improvements.
• Experience with SDK development — deep understanding of API design, versioning, and backward compatibility for third-party consumption.
• Experience with secure coding practices — Keychain, biometric authentication, certificate pinning, encryption.
• Familiarity with CI/CD pipelines for iOS (Fastlane, Xcode Cloud, Jenkins, or similar).
• Experience with App Store submission process, provisioning profiles, and code signing.
• Working knowledge of RESTful API integration and JSON parsing.
• Experience with version control (Git) and collaborative development workflows.
• Strong command of performance profiling tools (Instruments, Xcode debugging tools).
• Demonstrated experience mentoring other developers and leading code reviews.

Responsibilities

• Design, develop, and maintain native iOS applications and SDK components using Swift/SwiftUI and UIKit.
• Lead technical design decisions and own architecture for key features/modules.
• Implement new features per client-approved requirements and acceptance criteria.
• Ensure compatibility with the latest iOS releases and maintain backward compatibility per supported OS version matrix.
• Integrate with backend APIs, third-party SDKs, and banking/payment infrastructure securely.
• Drive architecture decisions for scalability, maintainability, and security.
• Manage app signing, provisioning profiles, and App Store submission processes.
• Optimize app performance, memory usage, and battery consumption.
• Mentor mid-level and junior developers on best practices, code quality, and testing discipline.
• Write unit tests for all new code (target minimum 80% code coverage) using XCTest.
• Write UI/integration tests using XCUITest for critical user flows.
• Define test strategy for new features, including edge cases and failure scenarios.
• Conduct manual exploratory testing on multiple device types and iOS versions prior to QA handoff.
• Perform security testing for sensitive data handling (tokenization, biometric auth, secure storage/Keychain).
• Document test cases and results to support release sign-off documentation.
• Lead code reviews with a focus on testability, edge-case handling, and maintainability.
• Reproduce and fix defects flagged during QA or client rejection within SLA timelines.
• Own regression testing strategy to ensure new releases don't break existing functionality.
• Collaborate with QA to define test plans aligned with release acceptance criteria.
• Conduct performance/load testing for SDK components used by external partner apps.

Skills

Swift

SwiftUI

UIKit

MVVM / Clean Architecture

XCTest / XCUITest

SDK development

Keychain / Biometrics

CI/CD for iOS

App Store submission

RESTful APIs

Git

Instruments profiling

Mentoring / Code reviews

Tools

Fastlane

Xcode Cloud

Jenkins

Provisioning profiles

Code signing

Job description

Synechron seeks an experienced Senior iOS Engineer to design, develop, and own native iOS apps and SDK components. You will drive architectural decisions, mentor juniors, and ensure secure integration with backend APIs and third-party SDKs.

You will implement features per client requirements, maintain compatibility with OS updates, and own release readiness, testing strategy, and code reviews to ensure high quality and performance.