Quast Ltd is seeking a PKI Engineer to support the OpNET PKI infrastructure for the MOD's New Style of IT (Deployed) programme. This senior-level position focuses on ensuring secure and reliable certificate lifecycle management across multiple security domains. The role requires expertise in PKI technologies, cryptographic concepts, and MOD security policies. Working in a hybrid model at MOD Corsham, the successful candidate will be responsible for implementing and maintaining PKI solutions, managing digital certificates, and ensuring compliance with strict security standards. This is a unique opportunity for a security specialist with DV clearance to contribute to critical defence infrastructure. The position offers competitive daily rates and a stable long-term contract until 2026, making it ideal for experienced professionals in defence technology.