Senior Simulation Software & Security Engineer

About the Role

Boeing Global Services SW Engineering is looking for a Senior Simulation Software & Security Engineer to join the Commercial Simulation Binary team, supporting Training Solutions. This is a fantastic opportunity to contribute to a complex iOS application, defining and implementing its security architecture.

Position Responsibilities

• Own, extend, and maintain a large native C++ codebase, ensuring high-quality, cross-platform code for Windows, Linux, and iOS.
• Deliver across the full development lifecycle, including feature development, bug fixes, refactors, and performance tuning.
• Build, improve, and troubleshoot automated build systems and CI/CD pipelines to enhance reliability and efficiency.
• Develop and maintain cross-platform tooling for code generation, packaging, signing, and release automation in partnership with DevOps.
• Design and implement security architecture and runtime protections for a complex iOS application with native C++ components, focusing on integrity checks, anti-tampering, and anti-detection mechanisms.
• Protect proprietary C++ libraries and sensitive data from reverse engineering and unauthorized extraction through hardening and obfuscation techniques.
• Define secure interfaces between Unreal Engine and native libraries, applying least-privilege principles and robust input validation.
• Implement secure handling of downloaded/runtime-accessed content.
• Evaluate and select security-related libraries, frameworks, and third-party protection tools.
• Partner with teams to harden build, signing, and release pipelines, ensuring secure cloud authentication and token handling.
• Implement and manage security logging, telemetry, and data controls for adversarial detection.
• Perform security validation activities including static/dynamic analysis, fuzzing, and reverse-engineering assessments.
• Collaborate cross-functionally with product, QA, and engineering teams.
• Mentor junior engineers and advocate for engineering best practices.

Basic Qualifications

• Bachelor of Science degree or higher from an accredited course of study in engineering, engineering technology, chemistry, physics, mathematics, data science, or computer science.
• Very strong proficiency in modern C/C++ and low-level programming skills.
• Experience developing iOS application security architecture.
• Experience with secure cryptography usage and key management.
• Experience with secure storage on iOS.

Preferred Qualifications

• 7+ years of applicable experience.
• iOS/macOS development experience.
• Knowledge of packaging and deployment for mobile platforms (IPA creation, code signing).
• Experience with unit testing frameworks and test automation.
• Knowledge of native application security for desktop and mobile applications.
• Knowledge of build caching and distributed build systems.
• Background in performance optimization, memory management, and multithreaded programming.
• Proven experience working directly in and modifying a large, existing code base.
• Proven experience handling multiple tool chains for cross-platform development.
• Hands-on experience with automated build and CI systems.
• Strong debugging skills with experience using debuggers and profiling tools.
• Familiarity with source control workflows and branching strategies.
• Excellent communication skills and ability to work effectively on a cross-functional team.
• Experience with software cracking for security improvement, including runtime integrity and memory control strategies.
• Experience with jailbreaking and permissionless debugger attachment.
• Experience with reverse engineering.
• Experience developing secure cloud authentication and token handling.
• Experience with security-focused static analysis, dynamic analysis, fuzzing, and adversarial validation.

Hiring Details

• This is a locally hired position in Crawley, UK.
• Benefits and pay are determined at the local level.
• This position is expected to be 100% onsite.