senior mobile developer (iOS & Android) - digital banking (24/7 support)(weekends, shift) #IKR

RECRUIT EXPRESS PTE LTD; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

Recruit Express Pte Ltd in Singapore is seeking a Senior Mobile Developer with 3–5 years of hands-on experience to design, develop and maintain secure mobile applications for banking clients. The role requires weekend shifts and occasional on-call responsibilities.

You will work across iOS (Swift/UIKit/SwiftUI) and Android (Kotlin/Java), integrate APIs, ensure strong authentication and secure data handling, and collaborate with product, architecture, UI/UX, security, and backend teams throughout

Qualifications

• 3–5 years of hands-on native mobile development for iOS and/or Android.
• Strong knowledge of secure mobile development practices and secure coding standards.
• Experience integrating RESTful APIs with backend systems.

Responsibilities

• Design, develop, test and maintain native mobile apps (iOS/Android).
• Build secure, scalable, high-performing banking applications.
• Integrate RESTful APIs and enterprise backend systems.
• Implement secure auth: MFA, OAuth 2.0, OpenID Connect, JWT, biometrics.
• Collaborate with product, architects, UI/UX, QA, security, backend teams.
• Review code, troubleshoot issues, support CI/CD pipelines.
• Ensure compliance with secure coding, SSDLC, OWASP Mobile Top 10.
• Handle ad-hoc duties as assigned.

Skills

Swift (iOS)

Kotlin/Java (Android)

Secure mobile development

API integration

MFA / OAuth 2.0

OpenID Connect / JWT

Biometrics (Face ID / Touch ID)

CI/CD

Security testing

Job description

Note: Successful candidates need to be comfortable with working on weekends and shift as and when required
We are seeking a Senior Mobile Developer with 3-5 years of experience in designing, developing, and maintaining secure mobile applications for retail and corporate banking customers. The ideal candidate will have strong expertise iniOS (Swift, UIKit/SwiftUI) and/or Android (Kotlin/Java) development, with a focus on secure mobile application development, API integration, and digital banking solutions.

Key Responsibilities

• Design, develop, test, and maintain native mobile applications for iOS and Android platforms.
• Build secure, scalable, and high-performing banking applications.
• Integrate RESTful APIs, enterprise backend systems, and third-party services.
• Implement secure authentication and authorization mechanisms including MFA, OAuth 2.0, OpenID Connect, JWT, biometrics (Face ID/Touch ID/Fingerprint), and session management.
• Collaborate with product owners, architects, UI/UX designers, QA, cybersecurity, and backend teams across the SDLC.
• Perform code reviews, troubleshoot production issues, and support CI/CD pipelines.
• Ensure compliance with secure coding standards, SSDLC practices, OWASP Mobile Top 10, and vulnerability remediation processes.
• Any other ad-hoc duties as assigned by supervisor

Key Requirements

• 3-5 years of hands-on experience in native mobile application development (iOS and/or Android).
• Strong proficiency inSwift, UIKit, SwiftUI, Xcode, and/orKotlin/Java, Android Studio.
• Experience with mobile application architectures such as MVC, MVVM, and Clean Architecture.
• Knowledge of mobile security best practices, data encryption, certificate pinning, Keychain/Secure Enclave, Android Keystore, and biometric authentication.
• Experience with OAuth 2.0, OpenID Connect, SAML, JWT, API security, and secure coding principles.
• Prior experience inmobile/internet banking applications, fraud detection, malware/threat detection solutions, and mobile security platforms such asZimperium, v-Key, or equivalent.
• Hands-on experience with Git, automated testing, code scanning, vulnerability remediation, and CI/CD.
• Strong analytical, debugging, and problem-solving skills.
• Experience in HarmonyOS development is an added advantage

CEI Reg No: R1104584

EA License No: 99C4599

Recruit Express Pte Ltd

Company Reg No: 199601303W