Ajaib
Ajaib
201 – 500 Employees
B2CFinanceFintech
Ajaib is an Indonesian finance and fintech company operating an online investment platform for mutual funds, stocks, and other assets. Designed to make investing more accessible, the platform supports digital registration and provides tools such as asset screening and automated trading to help users evaluate opportunities and manage investments. Ajaib also emphasizes understanding investment risk, with a focus on helping a broad range of customers make more informed decisions.

Staff Mobile Engineer - Ajaib (Hybrid, Indonesia)

Lead mobile architecture and performance engineering for Ajaib’s trading, crypto, and banking products. Shape secure, scalable Android and iOS platforms while raising technical standards across the fintech organization.

Description

  • Lead the architecture, design, and scaling of high-performance, low-latency mobile applications for high-frequency trading and fintech platforms
  • Set the mobile engineering roadmap, including architectural patterns, modularization frameworks, and core SDK libraries
  • Improve rendering performance, memory usage, APK and IPA size, and battery and network efficiency under demanding workloads
  • Build offline-first synchronization, encrypted local storage, and resilient network caching solutions
  • Partner with backend architects, product leaders, and security teams to uphold end-to-end data protection and compliance
  • Mentor senior engineers, lead technical reviews, and promote high standards of mobile engineering practice
  • Apply AI tools through a human-in-the-loop approach to accelerate delivery while protecting code security and architectural integrity

Requirements

  • Bring at least seven years of professional software development experience, including five or more years focused on advanced native or cross-platform mobile architecture with Android/Kotlin or iOS/Swift
  • Demonstrate deep knowledge of clean architecture, feature-based modularization, reactive programming, and large-scale state management
  • Show proven ability to diagnose memory leaks, rendering jank, thread blocking, and network serialization or deserialization bottlenecks
  • Have extensive hands-on experience with secure local storage, including EncryptedSharedPreferences, Keychain or Keystore, certificate pinning, and obfuscation
  • Master coroutines, reactive streams, or advanced asynchronous processing for high-frequency data such as real-time WebSocket ticker updates
  • Operate with exceptional autonomy and technical leadership, alongside a strong commitment to software quality and user experience

Benefits

  • Performance bonus tied to the impact of your work
  • Private insurance with comprehensive health coverage
  • Paid time off for rest and recharge
  • Company-sponsored training, courses, and professional certifications
  • Hybrid flexibility combining remote and office work
  • Career growth through close collaboration with experienced leaders and meaningful ownership
  • Exclusive employee discounts, partnerships, and lifestyle perks
  • Collaborative, high-ownership culture with cross-functional teams and opportunities to make a meaningful impact

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