Security Platform Architect - Cryptography & PKI Strategy

Halian | Managed Services, Recruitment Agency & Contract Staffing; Brussel; On-site; EUR 90,000 - 130,000; Full time

Job summary

Halian Group in Brussels, Belgium, seeks an experienced Security Solution Architect to strengthen its enterprise security architecture. You will translate complex business, risk, and security requirements into scalable architectural solutions, with emphasis on cryptography, key management, and secure technology adoption.

The role collaborates with engineering, cloud, and infrastructure teams to design principles, assess risks, and guide build, buy, or hybrid security options, while acting as a

Qualifications

• Experience designing enterprise security architectures across domains.
• Strong knowledge of cryptography, PKI, and key management.
• Familiarity with security standards and regulatory requirements.

Responsibilities

• Design and implement enterprise security architectures aligned with organizational architecture principles, security standards, and regulatory requirements.
• Translate business requirements and risk assessments into clear security architecture requirements and high-level technical designs.
• Define architectural principles, standards, and patterns for cryptography, key management, digital certificates, and related security domains.
• Collaborate with engineering, infrastructure, application, cloud, network, and business teams to ensure consistent implementation of security best practices.
• Assess existing and emerging security risks, identify architectural gaps, and evaluate build, buy, and hybrid solutions with clear technical trade-offs.
• Act as a subject matter expert, supporting proof-of-concept activities, architectural decisions, secure technology adoption, and continuous security improvement.

Skills

Enterprise architecture

Cryptography

PKI

Key management

Post-quantum security

Job description

Halian Group in Brussels, Belgium, seeks an experienced Security Solution Architect to strengthen its enterprise security architecture. You will translate complex business, risk, and security requirements into scalable architectural solutions, with emphasis on cryptography, key management, and secure technology adoption.

The role collaborates with engineering, cloud, and infrastructure teams to design principles, assess risks, and guide build, buy, or hybrid security options, while acting as a