Senior iOS App Developer – Backend Scalability Program

Ridgeline Software

Contract · Remote · Flexible hours

About the role

Ridgeline Software is scaling its flagship B2B SaaS platform and needs an experienced iOS App Developer to lead the delivery of a new multi‑tenant feature set. You will own the end‑to‑end implementation of the "TenantSync" module, ensuring seamless onboarding and data isolation for enterprise customers.

Key responsibilities

• Architect and implement the TenantSync UI using SwiftUI, adhering to Apple Human Interface Guidelines.
• Integrate secure multi‑tenant REST APIs with Alamofire, handling token refresh and tenant context propagation.
• Write unit and UI tests with XCTest and XCUITest to achieve 80%+ coverage before each sprint demo.
• Collaborate with backend engineers to define API contracts and data models for tenant isolation.
• Optimize app performance for large data sets, using Instruments to profile memory and CPU usage.
• Deliver a production‑ready build within a 10‑week timeline, including App Store beta distribution via TestFlight.

Must-have skills

• 5+ years of professional iOS development with Swift.
• Deep experience with SwiftUI, Combine, and UIKit interoperability.
• Proficiency in RESTful API consumption, authentication flows, and JSON parsing.
• Strong knowledge of code versioning (Git) and CI/CD pipelines for iOS.
• Ability to troubleshoot crashes and memory leaks using Xcode tools.

Nice to have

• Familiarity with multi‑tenant architecture patterns.
• Experience publishing enterprise apps via Apple Business Manager.