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# iOS Developer (Frontend SDK)

- **Company:** Robotics Technologies LLC
- **Location:** San Leandro, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Agile Methodology, Apple IOS, Apple Xcode, User Authentication, Unit Testing, Code Review, Cyber Security, Continuous Delivery, Continuous Integration, Memory Management, Payment Systems, Github, IOS SDK, Mobile Application Software, JSON, OAuth, PCI Data Security Standards, Performance Tuning, Scrum Methodology, Mobile Security, Systems Integration, Tokenization, Multithreading, Ios Frameworks, Backend, Git, Material UI, Integration Tests, Information Technology, Cocoapods, Enterprise Integration, Front End Software Development, Objective C++, Restful APIs, Xctest, Jenkins
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25197_f112d66e887488283deafadd2d994dc9

## About the Role

* 10+ years of iOS development experience.
 * Expert-level proficiency in Swift; working knowledge of Objective-C.
 * Strong experience designing or maintaining mobile SDKs / frameworks.
 * Hands-on experience with:
 * Xcode, Instruments, XCTest
 * Swift Package Manager / CocoaPods / Carthage
 * REST APIs & JSON parsing
 * Mobile security mechanisms (Keychain, certificates, OAuth, tokenization)
 * Memory management, performance tuning, multithreading (GCD/OperationQueue)

Domain Skills:

 * Exposure to payment systems, digital wallets, or fintech applications is highly preferred.
 * Experience working with Visa, Mastercard, EMV, token services, or other payment ecosystems is a strong plus., * Strong communication, documentation, and problem-solving abilities.
 * Ability to collaborate in a fast-paced, cross-functional environment.
 * Detail-oriented with a focus on secure and scalable engineering solutions., * Experience building SDKs adopted by large-scale developer communities.
 * Knowledge of cryptographic libraries, secure enclave, or authentication frameworks.
 * Familiarity with Agile, CI/CD, Git, Jenkins, or GitHub Actions.
 * Bachelor's or Master's degree in Computer Science, Engineering, or related field.

## Description

The client is seeking a highly skilled iOS Developer with strong expertise in building Frontend SDKs for high-scale, secure, and high-performance mobile applications. In this role, you will design, develop, and optimize iOS SDK components that power client's next-generation payment experiences, digital wallets, authentication frameworks, and secure transaction flows.

You will collaborate closely with product managers, architects, backend platform teams, and client's global developer ecosystem to build best-in-class mobile SDKs used by merchants, partners, and financial institutions worldwide., * SDK Design & Development:

 * Design, develop, and maintain iOS Frontend SDKs using Swift and/or Objective-C.
 * Build reusable client-side libraries, UI components, and frameworks for client's mobile payment solutions.
 * Ensure SDKs are lightweight, modular, scalable, and seamless for third-party integration.
 * Integration & APIs
 * Integrate payment APIs, authentication APIs, and secure transaction services.
 * Work with RESTful APIs, JSON data structures, and backend engineering teams to ensure smooth communication between systems.
 * Provide technical support for internal and external partners integrating iOS SDK.
 * Performance & Security:
 * Optimize mobile SDK performance, startup time, and memory usage.
 * Implement highly secure coding practices aligned with PCI-DSS and client's internal compliance.
 * Work with encryption modules, secure storage, tokenization, and device authentication.
 * Testing & Documentation:
 * Develop automated unit tests, UI tests, and integration tests for SDK reliability.
 * Create comprehensive developer documentation, integration guides, and sample apps.
 * Support continuous integration/continuous deployment (CI/CD) pipelines for SDK releases.
 * Cross-Functional Collaboration:
 * Partner with product, design, and architecture teams to define mobile-first solutions.
 * Participate in code reviews, sprint planning, and Agile ceremonies.
 * Provide mentorship to junior developers and contribute to engineering best practices.