Senior IOS Developer

HI5 CONSULTING SOLUTIONS PTE. LTD.; Singapore; On-site; SGD 110,000 - 150,000; Full time

Job summary

HI5 CONSULTING SOLUTIONS PTE. LTD. seeks an experienced iOS security engineer to design and develop secure native apps with emphasis on mobile threat detection and SSDLC. You will work on encryption, keychain access, and secure communication with RESTful services in cross-functional teams.

The role requires 4–6 years in iOS development, strong Swift/UIKit/SwiftUI skills, and familiarity with OAuth2/OpenID Connect and SAML. Collaboration across product and security teams is essential.

Qualifications

• Hands-on iOS native app development experience required.
• Strong focus on secure mobile development and API security.
• Experience with mobile threat detection and SSDLC.
• Familiarity with OAuth2/OpenID/SAML and JWT-based auth.
• Knowledge of Keychain, Secure Enclave, and certificate pinning.
• Cross-functional collaboration and communication skills.

Responsibilities

• Develop secure iOS applications with Swift/Objective-C.
• Implement best-practice security, encryption, and threat detection.
• Integrate RESTful services and ensure robust API security.
• Leverage Git and modern CI/CD workflows in teams.

Skills

iOS development

Swift

UIKit

SwiftUI

Objective-C

MVC

MVVM

REST APIs

OAuth2

OpenID Connect

SAML

JWT

Security

MFA

Cert pinning

Keychain

Secure Enclave

SSDLC

Threat detection

Fraud detection

Kotlin/Java

Android Studio

Tools

Xcode

Android Studio

Git

Job description

Job Requirements :

• 4-6 years of hands-on experience developing native iOS applications.
• Secure Mobile Application Development, Mobile application security best practices
• Secure coding principles, Data encryption at rest and in transit, Certificate pinning
• Keychain and Secure Enclave on iOS, Biometric authentication (Face ID / Touch ID)
• Multi-Factor Authentication (MFA), OAuth 2.0, OpenID Connect, or SAML
• JSON Web Tokens (JWT), API security, OWASP Mobile Top 10
• Experience in Mobile/Internet banking application, Fraud Detection, Mobile Security – Maleware detection, threat detection.
• Experience in Zimperium, vKey product or any other mobile threat detection protect.
• Secure software development lifecycle (SSDLC), Vulnerability remediation and code scanning
• Strong proficiency in Swift, UIKit and/or SwiftUI, Objective-C, Xcode,
• Proficiency in Android Studio, Android (Kotlin/Java) is added advantage.
• Good understanding of iOS application architecture (MVC, MVVM, Clean Architecture).
• Experience integrating RESTful APIs and JSON-based web services.
• Experience using Git and collaborative source control workflows.
• Good understanding of software engineering principles and design patterns.
• Strong analytical, debugging, and problem-solving skills.
• Development experience in Android / Harmony OS Mobile Development is added advantage.
• Good communication skills to work effectively in cross-functional teams.