Jay Zisch

About

Senior mobile engineer with 12+ years of experience building scalable mobile applications across fintech, airline, and smart home platforms. Specializes in modern iOS architecture, SwiftUI development, authentication systems, and high-quality testing practices.

Domain experience spans fintech, airline and travel, smart home and IoT, and consumer mobile applications. Known for delivering reliable customer-facing features while collaborating with cross-functional teams — backend, Android, design, and product.

Skills

iOS & Apple Platforms

SwiftSwiftUIUIKitCombineObjective-CXcodeXCTestUITestwatchOStvOSiPadWidgetsCocoaPodsSnapKitSwinjectRealm Database

Cross-platform & Mobile

React NativeFlutterKotlinAndroidTypeScriptSQLiteJSON

Testing & Quality

TDDUnit TestingTest AutomationQuick & NimbleKiwiRxTestA/B TestingSnapshot TestingCoding Standards

AI & Agentic Development

Claude CodeClaude SubagentsMCPGenerative AIAI EthicsGoogle Cloud Platform

Architecture & DevOps

Clean ArchitectureMVVMMVCRxSwiftReactive ProgrammingOAuthSDK DevelopmentPush NotificationsFirebaseFastlaneCircleCIGit

Certifications

  • Introduction to Model Context ProtocolAnthropic, May 2026
    Verify
  • Generative AI Leader CertificationGoogle, May 2026
    Verify
  • Claude 101Anthropic, Jun 2026
    Verify
  • Claude Code 101Anthropic, Jun 2026
    Verify

Recommendations

Jay is an exceptional engineer and a thoughtful collaborator. He was a key member of the mobile team, often providing the critical perspective necessary to ensure we made the best architectural decisions. He excels in demanding environments, meeting tight timelines with high-quality, well-tested code that consistently met our highest standards.

Levoy WheelerTechnical Lead iOS, Southwest Airlines

The code he wrote for the test was some of the best I had seen. Once Jay was hired, the reports from his superior were always excellent. I think he would be an excellent addition to any company smart enough to choose him.

Daniel TartagliaSenior iOS Developer, iSeatz

His strong skills helped us a lot. Specifically, he's familiar with reactive programming. Besides, he's a good learner and often shared new knowledge with team members. I assigned him to several big projects — he got them done involving stakeholders and delivered on time. I really trust him.

Tomofumi HamadaSenior Engineering Manager, PayPay Corporation