Senior Simulation Software & Security Engineer

Crawley, England Job  Category Engineering - Software Role Type Onsite Post Date Jun. 25, 2026

At the company, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.

The company Global Services SW Engineering provides aerospace industry leadership in custom software development, engineering and technical services, and a range of other services to support training centres. Join the Commercial Simulation Binary team as a Senior Simulation Software & Security Engineer part of the SW Engineering team supporting Training Solutions. In this role, you will also help define, implement, and harden the security architecture for a complex iOS application built with Unreal Engine and extensive proprietary native C++ libraries.

• This requisition is for a locally hired position in Crawley. Benefits and pay are determined at the local level and are not part of the company U.S. based payroll.
• This position is expected to be 100% onsite. The selected candidate will be required to work onsite at one of the listed location options.

• Own, extend, and maintain a large native C++ codebase: design, implement, review, and ship high-quality, cross-platform code for Windows, Linux, and iOS.
• Deliver across the full development lifecycle: feature development, bug fixes, refactors, performance tuning, and ongoing maintenance.
• Build, improve, and troubleshoot automated build systems and CI/CD pipelines to increase reliability, reduce build times, and ensure reproducible cross-platform builds.
• Develop and maintain cross-platform tooling for code generation, packaging, signing, deployment, and release automation in partnership with Dev Ops.
• Design and implement security architecture and runtime protections for a complex iOS application with native C++ components, including integrity checks, jailbreak/anti-debug detection, and tamper response.
• Protect proprietary C++ libraries and sensitive data from reverse engineering and unauthorized extraction using hardening, obfuscation, and other protection techniques.
• Define secure interfaces between Unreal Engine and native libraries, apply least-privilege and robust input validation, and 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 and ensure secure cloud authentication/token handling.
• Implement and manage security logging, telemetry, and data controls for adversarial detection, and 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 engineering best practices to balance security, performance, maintainability, and user experience.

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

• 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,…