The Role

:

At Eternalight, we are looking for a software Development Engineer (iOS) to join our Core Payments team for a leading fintech client. In this role, you will be responsible for developing and scaling our iOS SDK, the critical integration point used by thousands of merchants to process payments across multiple geographies. 

You will work closely with product and backend engineering teams to design high- performance features, ensuring the SDK remains secure, lightweight and developer - friendly. This role offers the opportunity to solve complex engineering challenges involved in building financial infrastructure that operates at massive scale. 

Roles and Responsibilities:

• SDK Development:

Contribute to the development of our native iOS SDK, ensuring high availability and seamless payment experiences for a diverse merchant base.

• Engineering Excellence:

Write clean, maintainable, and modular code. Architect solutions that are resilient across different host app environments.

• Automation:

Design and implement robust automation for tests, builds, and performance profiling. If a task is repetitive, you are expected to automate it.

• Instrumentation:

Build deep telemetry within the SDK to provide real-time insights into success rates and latency, enabling data-driven product decisions.

• Security:

Implement industry-standard security protocols, including SSL pinning and runtime integrity checks, to protect sensitive transaction data.

Mandatory Qualifications:

• 2+ years of experience

in native iOS development using

Swift

.

• Systems Design:

Solid understanding of OOPS principles and architectural patterns (e.g., MVVM, VIPER, or Clean Architecture).

• Cross-Platform Knowledge:

Practical experience with bridge-based frameworks such as

Flutter, React Native, or Cordova

.

• Technical Depth:

Strong proficiency in GCD, Swift Concurrency, and UIKit/SwiftUI lifecycles.

• Debugging:

Proficiency in using Xcode Instruments for memory management, CPU profiling, and network debugging.

Good to Have:

• Android Stack Experience:

Familiarity with

Kotlin or Java

is highly preferred to help maintain feature parity and align API design across platforms.

• Deployment & Tooling:

Knowledge of CocoaPods, Swift Package Manager (SPM), or Fastlane for automated distribution.

• Open Source:

Active contributions to GitHub or a portfolio of apps published on the App Store.