Senior iOS Engineer: Secure Banking & Fraud Defense

EVYONIC SOLUTIONS PTE. LTD.; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

EVYONIC SOLUTIONS PTE. LTD. is seeking an experienced iOS developer to design, build and maintain native iOS apps using Swift, UIKit/SwiftUI, Xcode, and modern architecture.

You will implement secure coding, encryption, MFA, OAuth, Keychain/Secure Enclave, and integrate REST APIs with robust authentication, aligning with OWASP Mobile Top 10. Team uses MVC/MVVM and Git.

The role favors those with banking/fraud detection experience and knowledge of Android or HarmonyOS is a plus.

Qualifications

• 4+ years hands-on experience in native iOS app development.
• Bachelor’s degree in CS/IT/Engineering or related field.
• Strong proficiency in Swift, UIKit/SwiftUI, Objective-C and Xcode.
• Experience with mobile security, OWASP Mobile Top 10, encryption and API security.
• Experience with MFA, OAuth 2.0, OIDC, JWT and certificate pinning.
• Experience with Keychain, Secure Enclave and biometric authentication.
• Banking/fraud/mobile threat detection security experience preferred (Zimperium, vKey).
• Strong analytical, debugging and problem-solving skills.
• Knowledge of Android/Kotlin/Java or HarmonyOS is a plus.

Responsibilities

• Develop and maintain native iOS applications using Swift, UIKit/SwiftUI and Xcode.
• Implement secure coding, encryption, certificate pinning and iOS security features.
• Integrate REST APIs, JSON services and secure authentication.
• Implement Keychain, Secure Enclave and biometric authentication.
• Follow MVC/MVVM/Clean Architecture and Git-based development.
• Support vulnerability remediation, fraud detection and mobile threat detection.

Skills

Swift

UIKit/SwiftUI

Xcode

Mobile Security

OAuth 2.0 / OIDC / JWT

Certificate pinning

Biometric authentication

Analytical skills

Problem solving

Android/Kotlin/Java / HarmonyOS

Education

Bachelor’s degree in CS/IT/Engineering

Tools

REST APIs

Keychain / Secure Enclave

JSON / API security

Certificate pinning

Git-based development

Encryption

Job description

EVYONIC SOLUTIONS PTE. LTD. is seeking an experienced iOS developer to design, build and maintain native iOS apps using Swift, UIKit/SwiftUI, Xcode, and modern architecture.

You will implement secure coding, encryption, MFA, OAuth, Keychain/Secure Enclave, and integrate REST APIs with robust authentication, aligning with OWASP Mobile Top 10. Team uses MVC/MVVM and Git.

The role favors those with banking/fraud detection experience and knowledge of Android or HarmonyOS is a plus.