Senior Infrastructure Architect (Identity & Security)

A leading global organisation is seeking a Senior Infrastructure Architect (Identity & Security) to join their highly skilled technology team in Taguig.

This pivotal role offers you the opportunity to shape, govern, and optimise enterprise infrastructure with a particular focus on Public Key Infrastructure (PKI), identity systems, and hybrid environments. As a trusted technology partner, the organisation delivers resilient, secure, and highly available services that underpin business success. You will be at the forefront of designing robust solutions that support critical operations, especially within regulated sectors such as financial services. The position blends strategic architecture with hands-on engineering, offering you the chance to make a tangible impact while collaborating with talented professionals across security, network, and application domains. Flexible working opportunities and a supportive environment ensure you can thrive both professionally and personally.

• Play a key role in shaping enterprise infrastructure strategy with a strong emphasis on PKI, identity management, and hybrid cloud integration, ensuring security and scalability for mission-critical systems.
• Join an inclusive team that values collaboration, knowledge sharing, and professional growth, where your expertise will directly influence technology direction in regulated environments such as financial services.
• Benefit from flexible working arrangements and access to advanced technologies while contributing to a culture that prioritises resilience, compliance, and continuous improvement.

What you'll do:

As a Senior Infrastructure Architect – Identity & Security based in Taguig, you will play an instrumental part in shaping the future of enterprise technology within a globally recognised organisation. Your day-to-day responsibilities will involve architecting robust infrastructure solutions that integrate seamlessly between on-premise data centres and leading cloud providers. You will be entrusted with designing secure identity management frameworks using Active Directory and Entra ID while also taking full ownership of PKI deployments from inception through governance. Your expertise will be called upon to provide architectural direction for messaging platforms and DNS configurations while maintaining hands-on involvement in engineering tasks such as server administration or virtualisation. By leading incident investigations through root cause analysis and driving automation projects that enhance efficiency across IT operations, you will ensure the organisation’s technology landscape remains resilient against evolving threats. Collaboration is central to this role; you will work closely with cross-functional teams to translate business requirements into secure technical solutions while presenting your recommendations confidently to senior stakeholders.

• Lead the design of comprehensive enterprise infrastructure solutions by developing architecture frameworks, processes, and implementation strategies tailored to organisational needs.
• Define and uphold infrastructure architecture standards that guarantee scalability, security, resilience, and alignment with industry best practices.
• Architect hybrid environments by integrating on-premise systems with cloud platforms such as AWS and Azure to deliver seamless service delivery.
• Design and optimise identity and access management systems including Active Directory and Entra ID to ensure secure authentication across all platforms.
• Provide architectural guidance for messaging systems like Exchange Online and AWS SES as well as DNS infrastructures including AD-integrated DNS and Route 53.
• Take ownership of PKI initiatives by designing and implementing enterprise-grade PKI solutions from scratch covering certificate authorities, lifecycle management, security hardening, compliance controls, policies, governance, and operational procedures.
• Act as the subject matter expert for all PKI-related matters by providing technical leadership on encryption, authentication models, trust frameworks, and issue resolution.
• Maintain an active role in infrastructure engineering by supporting Windows Server environments, managing Group Policy Objects (GPOs), overseeing VMware virtualisation platforms, and driving optimisation projects for performance and cost-efficiency.
• Lead root cause analysis for complex incidents by conducting thorough investigations, providing L3 support for escalations, implementing preventive measures based on findings, and recommending architectural improvements.
• Champion automation initiatives using PowerShell scripts or enterprise tools like ServiceNow to reduce manual operations while implementing monitoring solutions for proactive issue detection.

What you bring:

To excel as a Senior Infrastructure Architect – Identity & Security in this forward-thinking organisation based in Taguig, you will bring extensive experience gained over approximately 15 years within IT—at least seven of which have been spent architecting large-scale infrastructure solutions. Your deep technical proficiency spans PKI design from initial planning through operational governance; you are adept at establishing certificate authorities from scratch while ensuring robust lifecycle management practices are followed. Your background includes significant exposure to identity management via Active Directory or Entra ID alongside hands-on administration of Windows Server environments. You possess advanced skills configuring messaging systems like Exchange Online or AWS SES as well as DNS infrastructures both locally integrated with AD or hosted in the cloud via Route 53. Your familiarity with VMware virtualisation enables you to drive optimisation initiatives that improve reliability without compromising cost-efficiency. A solid foundation in networking principles complements your understanding of security best practices required for hybrid cloud deployments involving AWS or Azure platforms. You are known for your analytical approach when conducting root cause analyses after major incidents—implementing lessons learned into architectural improvements—and your commitment to risk mitigation aligns perfectly with regulatory expectations found in financial services sectors. Above all else your interpersonal strengths allow you to communicate complex ideas clearly while building consensus among diverse stakeholders.

• Approximately 15 years of experience in IT roles with at least 7 years dedicated to infrastructure architecture responsibilities within large-scale enterprises.
• Demonstrated expertise in designing end-to-end Public Key Infrastructure (PKI) solutions including certificate authority setup, lifecycle management processes, policy development, governance structures, security hardening techniques, compliance controls implementation, encryption protocols deployment, authentication models configuration, trust model establishment across diverse systems.
• Extensive hands-on experience managing identity systems such as Active Directory (AD) and Entra ID (Azure AD), ensuring secure access control throughout hybrid environments.
• Proven track record administering Windows Server ecosystems alongside Group Policy Objects (GPOs) for streamlined user management within regulated settings.
• In-depth knowledge of messaging platforms like Exchange Online or AWS SES coupled with advanced skills configuring DNS architectures both on-premise (AD-integrated) and cloud-based (Route 53).
• Comprehensive understanding of VMware virtualisation technologies used to optimise resource allocation while enhancing system reliability across distributed networks.
• Solid grasp of networking fundamentals combined with practical application of security principles relevant to hybrid cloud deployments involving AWS or Azure services.
• Strong analytical abilities demonstrated through successful root cause analysis (RCA) exercises following complex incidents along with effective implementation of preventive measures based on findings.
• Familiarity with risk management methodologies as well as change management frameworks essential for maintaining compliance within highly regulated industries such as financial services.
• Exceptional stakeholder engagement skills enabling clear communication of technical concepts at all organisational levels plus proven ability to influence decision-making processes regarding infrastructure investments.

What sets this company apart:

This organisation stands out as a global leader committed to delivering resilient technology services that empower business success across multiple sectors—including those governed by stringent regulatory requirements. Their dedication to fostering an inclusive workplace ensures every team member feels valued while benefiting from flexible working arrangements designed around individual needs. Employees enjoy access to cutting-edge technologies supported by ongoing training opportunities that encourage continuous professional development. The company’s collaborative culture promotes knowledge sharing between departments so everyone can contribute meaningfully toward shared goals—whether optimising existing systems or pioneering new approaches within IT infrastructure. With a strong emphasis on security governance risk management compliance adherence innovation is balanced thoughtfully against operational stability making this an ideal environment for experienced professionals seeking both challenge fulfilment career progression within a supportive setting.

What's next:

If you are ready to take your expertise in infrastructure architecture to the next level within a globally respected organisation then this is your moment—apply now if you want your work to make a real difference!

Apply today by clicking on the link provided—your next career chapter awaits!

Due to the high volume of applications we are experiencing, our team will only be in touch with you if your application is shortlisted.