Senior IOS Developer

Hi5 Consulting Solutions Pte Ltd; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Hi5 Consulting Solutions Pte Ltd is seeking an experienced mobile security engineer specializing in native iOS development. You will ensure secure coding practices, implement authentication, encryption, and threat detection across iOS apps.

Ideal candidates have 4–6 years of hands-on iOS work, strong knowledge of Swift/SwiftUI/UIKit, and experience with API security, OAuth/OpenID/SAML, and secure storage such as Keychain with Secure Enclave. Prior banking app exposure is a plus.

Qualifications

• 4–6 years of hands-on iOS development experience.
• Experience in secure mobile development and app security practices.
• Strong understanding of data encryption and certificate pinning.
• Experience with Keychain and Secure Enclave on iOS; biometric auth.
• Familiarity with MFA, OAuth 2.0, OpenID Connect or SAML.
• Knowledge of JWTs, API security and OWASP Mobile Top 10.
• Experience in mobile banking apps and fraud/threat detection.
• Experience with mobile threat detection tools (e.g., Zimperium, vKey).
• Familiarity with SSDLC and vulnerability remediation.
• Proficiency in Swift, UIKit and/or SwiftUI; Objective-C; Xcode.
• Android Studio knowledge (Kotlin/Java) is a plus.
• Understanding of iOS architectures (MVC, MVVM, Clean).
• Experience integrating RESTful APIs and JSON services.
• Git and collaboration workflows.
• Strong problem-solving and communication skills.
• Development with Android/Harmony OS is a plus.

Skills

Swift

UIKit

SwiftUI

Objective-C

Xcode

Android Studio

Kotlin/Java

MVC architecture

MVVM architecture

Clean Architecture

API security

JWT

OAuth 2.0

OpenID Connect

SAML

OWASP Mobile Top 10

SSDLC

Threat detection

Malware detection

iOS Security

Secure coding

Certificate pinning

Keychain / Secure Enclave

MFA

Encryption

RESTful APIs

Git

Tools

Zimperium

vKey

Job description

• 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.