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Ajaib

Staff Mobile Engineer

Ajaib

. Architect, design, and scale high-performance, low-latency mobile client applications for high-frequency trading and fintech platforms .

Posted 10/6/2026full-timeJakarta • IndonesiaLeadWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in architecting and optimizing high-performance mobile applications for fintech platforms, with a strong focus on clean architecture, secure data storage, and user experience. Proven ability to lead technical initiatives and mentor engineering teams while ensuring compliance and data safety.

Highest-signal resume keywords
Mobile Architecture (Android/Kotlin or iOS/Swift)Clean ArchitectureSecure Local Data StorageTechnical LeadershipReactive Programming

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Mobile Application DevelopmentAdvanced Native DevelopmentModularization FrameworksPerformance OptimizationData SynchronizationMemory Leak ProfilingAsynchronous OperationsNetwork SerializationCertificate PinningObfuscation
Soft Skills
Technical LeadershipMentoringCollaborationAutonomyAttention to Detail
Tools & Technologies
AI ToolsEncryptedSharedPreferencesKeychain/KeystoreWebSocketCoroutines
Industry Keywords
FintechHigh-Frequency TradingMobile EngineeringData SafetyCompliance

Tech Stack

Tools & technologies
AndroidiOSKotlinSwift

About the role

Key responsibilities & impact
  • Architect, design, and scale high-performance, low-latency mobile client applications for high-frequency trading and fintech platforms
  • Drive the mobile engineering roadmap, establishing architectural patterns, modularization frameworks, and core SDK libraries
  • Optimize app rendering performance, minimize memory footprint, reduce APK/IPA size, and control battery/network consumption under intensive loads
  • Design offline-first data synchronization, secure local storage encryption, and resilient network caching mechanisms
  • Collaborate closely with backend architects, product leaders, and security teams to enforce end-to-end data safety and compliance
  • Mentor senior engineers, lead technical reviews, and champion elite mobile engineering execution and craftsmanship
  • Utilize AI tools critically with a "human-in-the-loop" framework to accelerate delivery without compromising code security or architecture integrity

Requirements

What you’ll need
  • Minimum 7+ years of professional software development experience with at least 5+ years dedicated to advanced native or cross-platform mobile architecture (Android/Kotlin or iOS/Swift)
  • Deep expertise in clean architecture, modularization (feature modules), reactive programming, and state management at scale
  • Proven track record of profiling memory leaks, rendering jank, thread blocking, and optimizing network serialization/deserialization
  • Extensive practical knowledge of secure local data storage (EncryptedSharedPreferences, Keychain/Keystore), certificate pinning, and obfuscation
  • Master practitioner of coroutines, reactive streams, or advanced asynchronous operations handling high-frequency data streams (e.g., real-time WebSocket ticker updates)
  • Exceptional autonomy, technical leadership, and an obsession with software craftsmanship and user experience

Benefits

Comp & perks
  • Performance Bonus - Get rewarded for the impact you make
  • Private Insurance - Comprehensive health coverage for you
  • Paid Time Off - Take the time you need to recharge and come back stronger
  • Learning & Development - Company-sponsored training, courses, and professional certifications
  • Hybrid Work Arrangement - Enjoy the flexibility of working both remotely and from the office
  • Career Growth - Work closely with experienced leaders and take on meaningful ownership as we scale
  • Employee Perks - Enjoy exclusive discounts, partnerships, and lifestyle perks
  • Collaborative & High-Ownership Culture - Work with smart, driven people in cross-functional teams, take ownership, and make a meaningful impact