Senior Mobile SDK Engineer

Overview

Our Partner, who connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe is looking for a Senior Mobile SDK Engineer with deep expertise in mobile platforms and OS internals to join a growing mobile group our client who gives businesses the modern tools they need to build secure, trusted and end-to-end digital identity journeys to innovate and grow.

The company serves many of the world’s largest banks, insurers, retailers, and other leading brands, collectively responsible for more than $1.3 trillion in annual commerce.

You’ll be working at the intersection of cutting-edge biometrics, behavioral analytics, and next-gen identity orchestration — helping the world’s leading brands safeguard millions of users.

Backed by a $543M Series A — one of the largest in cybersecurity history — and trusted by major global enterprises, they offer the agility of an innovator with the strength and backing of an industry leader.

Main Responsibilities

– Develop efficient, resilient, and secure SDKs that integrate deeply with mobile operating systems and are deployed on millions of devices.

– Research and explore mobile OS internals, including system services, security mechanisms, and data collection points across both Android and iOS.

– Stay up-to-date with the latest platform changes, OS versions, and security enhancements.

– Collaborate closely with security researchers and backend engineers to design and implement advanced security solutions.

– Work in a team developing developer-centric products, enabling seamless integration into clients’ apps across industries such as banking.

Mandatory Requirements

What makes you a great fit:

– At least 6 years of hands-on experience in Android and iOS development.

– Strong experience developing mobile SDKs, preferably used by third-party developers and large-scale organizations.

– Profound understanding of mobile operating systems, including:

– Application lifecycle management;

– Resource management and performance optimization;

– Deep familiarity with OS internals (memory, threading, security models);

– A strong sense of ownership, independence, and problem-solving skills; you get things done.

– Upper-intermediate English level.

Will be a plus:

– Experience developing security solutions for mobile platforms (RASP, root/jailbreak detection, anti-tampering, etc.).

– Deep understanding of trusted hardware components (TEE, Secure Enclave, KeyStore).

– Bachelor’s degree in Computer Science, Software Engineering, or equivalent field.

– Experience with cross-platform mobile development, such as React Native, Flutter, or Kotlin Multiplatform.

– Familiarity with performance profiling and debugging tools (e.g., Instruments, Perfetto, Systrace).

We offer

– People-oriented management without bureaucracy

– The friendly climate inside the company is confirmed by the frequent comeback of previous employees

– Flexible working schedule

– 29 paid time off (18 working days per year, plus 11 days — all national holidays)

– 10 sick leave days

– Full financial and legal support for private entrepreneurs

– Free English classes with native speakers or with Ukrainian teachers (for your choice)

– Dedicated HR

Our next steps:

✅ Intro call with a Recruiter — ✅ Client tech interview — ✅ Tech interview with livecoding — ✅ HR client interview — ✅ Offer