SW Engineer

AppsFlyer builds technology at massive scale, powering measurement, analytics, and fraud prevention across billions of mobile events every day.

Join AppsFlyer’s Security SDK Team, responsible for protecting the integrity, authenticity, and resilience of our mobile SDKs across Android and iOS. The team safeguards AppsFlyer’s ecosystem by preventing spoofing, securing SDK traffic, and hardening code that runs on billions of devices worldwide.

Operating at the intersection of mobile platforms, low-level systems, and security engineering, the Security SDK team plays a critical role in delivering trusted, industry-leading solutions to customers and partners globally.

Security SDK engineers design and deploy advanced protection mechanisms such as compiler-level transformations, obfuscation pipelines, and cryptographic verification flows, with a strong focus on robustness and long-term architecture.

We work with technologies including C/C++, LLVM and compiler toolchains, reverse engineering frameworks, Android and iOS platforms, and AWS-based backend services and CI/CD infrastructure.

At AppsFlyer, we encourage engineering excellence and emphasize personal growth through deep technical challenges, continuous learning, and ongoing research.

What You'll Do

• Own and develop AppsFlyer products and features end-to-end - from design to production
• Solve diverse and complex problems
• Collaborate with Product Managers and Software Engineers to deliver value to customers
• Work in an Agile environment with engineers across mobile, backend, and product.
• Drive security improvements across the Security Team through research, PoCs, and knowledge sharing.
• Design and implement advanced protection mechanisms for Android and iOS SDKs.
• Develop and maintain LLVM passes, binary transformations, and custom obfuscation flows.
• Conduct reverse engineering and red-team exercises using tools such as Frida, Ghidra, IDA Pro to identify weaknesses and improve defense strategies.
• Work hands-on with C++, memory layouts, system APIs, compilers, linkers, and build chains (CMake-based).
• Apply low-level debugging, performance tuning, and binary analysis techniques.
  
  

What You Have

• B.Sc. in computer science or an equivalent
• Strong programming skills in C/C++ with 2+ years of experience, including experience with CMake-based build systems.
• Experience with low-level programming: memory, compilers, OS internals, or binary formats.
• Hands-on experience with reverse engineering, debugging, or instrumentation tools (e.g., Frida, Ghidra, IDA Pro).
• Very good English communication skills.
• A drive to get things done, especially as part of a team
• Ability to quickly adapt to changes and desire to learn and grow
• Appreciation for best practices and an itch to raise and act on ideas for improvement
  
  

Bonus Points

• Experience in mobile development (Android or iOS).
• Experience writing LLVM passes or working with LLVM/Clang toolchains.
• Familiarity with bitcode, compiler pipelines, or obfuscation frameworks.
• Experience developing or maintaining AWS-based services.
• Recommended by an AppsFlyer employee
  
  

As a global company operating from 25 offices across 19 countries, we reflect the human mosaic of the diverse and multicultural world in which we live. We ensure equal opportunities for all of our employees and promote the recruitment of diverse talents to our global teams without consideration of race, gender, culture, or sexual orientation. We value and encourage curiosity, diversity, and innovation from all our employees, customers, and partners.

“As a Customer Obsessed company, we must first be Employee Obsessed. We need to make sure that we provide the team with the tools and resources they need to go All-In.” Oren Kaniel, CEO