Senior Security Engineer

### Who you are
- Strong programming experience in C/C++
- Experience developing software for Trusted Execution Environments (TEE) or ARM TrustZone
- Experience building Trusted Applications (TA) or secure platform services
- Knowledge of secure monitor calls (SMC) and world switching mechanisms
- Understanding of hardware root of trust, secure boot, and device attestation
- Experience with secure key storage and applied cryptography
- Experience working with Linux or embedded operating systems
- Bachelor’s degree or equivalent experience in Security Engineering, or related field
- Experience with OP-TEE
- Experience implementing DRM or secure media pipelines
- Experience with secure storage (RPMB)
- Experience with Android hardware-backed security (Keystore / KeyMint)
- Familiarity with reverse engineering tools (Ghidra, IDA, Frida)
- Experience in platform security, console security, or embedded device security
- Knowledge of side-channel attacks and secure system design

### What the job involves
- We are looking for a security engineer to design and implement security-critical components running inside Trusted Execution Environments (TEE) such as ARM TrustZone
- In this role, you will develop Trusted Applications (TA) responsible for protecting DRM keys, secure media pipelines, device integrity verification, and hardware-backed security features for mobile and media platforms
- You will work closely with platform, operating system, and hardware teams to build robust security solutions protecting high-value digital content and platform services
- Design and implement Trusted Applications (TA) running in ARM TrustZone / TEE environments
- Develop secure communication between Normal World and Secure World
- Implement secure key management and cryptographic operations inside TEE
- Build DRM and secure media protection systems
- Integrate TEE security services with Android or embedded platforms
- Implement secure storage mechanisms (RPMB, secure file systems)
- Design device attestation and hardware-backed security features
- Perform threat modeling and attack surface analysis
- Collaborate with OS, firmware, and hardware teams to integrate platform security features
- Investigate and mitigate attacks such as
- Investigate and mitigate attacks such as tampering, reverse engineering, and runtime manipulation

### Benefits
- Private medical insurance
- Private dental insurance
- Flexible working policy (remote working, flexible hours)
- Free fruit every day in our offices
- On-site free gym (London & Liverpool)
- On-site subsidised cafés
- On-site bar (Thursdays & Fridays, London & Liverpool)
- Employee Assistance Programme
- Eye care assistance
- x2 volunteering days each year
- Group pension plan
- Discretionary bonus scheme
- Season ticket loans
- Life assurance
- Income protection
- 25 days holiday, plus Bank Holidays
- Discretionary days off over Christmas and summer
- Free giveaways of select first party products and services
- Discounts on PlayStation products
- Discounts on Sony products
- Access to other corporate discounts