Senior Multi-Cloud Infrastructure and Security Architect

Senior Multi-Cloud Infrastructure and Security ArchitectThe Enterprise Email Security team is responsible for safeguarding the email communications for a complex global organization. Although the current team excels in platform architecture, threat mitigation, incident response, compliance, and governance, we are planning a significant transformation of our infrastructure. This initiative involves expanding from a legacy on-premises environment to a robust, multi-cloud ecosystem across leading global cloud service providers. While the organization possesses deep security expertise, there is a need for a highly skilled professional in cloud architecture and enterprise IT infrastructure to design and implement secure and resilient cloud solutions. The company is seeking a Senior Multi-Cloud Infrastructure and Security Architect for a contractor role. This individual will serve as a technical leader, translating high-level security requirements into practical, scalable cloud engineering solutions. The role is critical to ensuring the organization's systems are robust, resilient, and highly available.Key Responsibilities1. Hybrid & Multi-Cloud Architecture DesignArchitect and implement secure, enterprise-grade multi-cloud infrastructure across AWS and Azure (GCP is a plus), ensuring alignment with benchmarks and corporate security policies.Adopt complex hybrid connectivity solutions to link on-premise and cloud based systems.Establish scalable IAM hierarchies, cross-account trust relationships, and organizational units across multiple cloud tenants.2. Infrastructure Resiliency & Disaster Recovery (DR)Architect high-availability (HA) and disaster recovery topologies across disparate cloud providers to eliminate single points of failure (e.g., active-active cross-cloud replication).Develop, document, and test automated failover mechanisms for critical enterprise workloads to ensure zero-downtime objectives.3. Infrastructure as Code (IaC) & AutomationDefine, build, and maintain the IaC repository using automation platforms.Implement secure CI/CD deployment pipelines (Jenkins, GitHub Actions) embedded with automated security guardrails and static analysis tools.4. Technical Advisory & CollaborationServe as the primary subject matter expert (SME) on cloud infrastructure for the core Cyber Security team, translating security objectives into concrete cloud configurations.Collaborate with traditional on-prem network and sysadmin teams to systematically migrate or extend legacy workloads to the cloud without disrupting active operations.Required Skills & Experience• Enterprise Scale: Minimum 8+ years of experience managing, architecture-designing, and deploying IT infrastructure within a Fortune 500 or equivalent large-scale enterprise.• Multi-Cloud Mastery: Deep, hands-on production experience with at least two major cloud vendors (AWS and Azure are highly preferred). You know their native networking, identity systems, and edge security controls inside out.• Networking: Strong foundational background in traditional on-premises networking (firewalls, load balancers, VLANs, proxies) and how those concepts map directly to cloud-native constructs (VPCs, VNets, Transit Gateways).• Automation-First Mindset: Advanced proficiency with automation toolsets.• Pragmatic Security Knowledge: While you don't need to be a penetration tester, you must thoroughly understand cloud security frameworks and modern identity protocols.• Scripting & Systems Proficiency: Strong proficiency with Python programming, Shell scripting, and Unix/Linux operating systems.Desired Certifications(While your hands-on experience matters most, we highly value the following credentials)• AWS Certified Solutions Architect – Professional / AWS Certified Security – Specialty• Microsoft Certified: Azure Solutions Architect Expert / Azure Security Engineer Associate• CCSP (Certified Cloud Security Professional) or equivalent infrastructure-focused certificationsPreferred / Plus QualificationsFamiliarity with Secure Email Gateway (SEG) products such as Proofpoint and FortimailFamiliarity with Exchange-Online security products such as Sublime security and Abnormal Email SecurityExperience with large?scale email broadcast or bulk?messaging platformsExposure to compliance frameworks, audits, and regulatory examinationsExperience integrating email platforms with monitoring, logging, and AIOps toolingPrior experience mentoring senior or mid?level engineersKey AttributesAbility to work independently on complex, ambiguous problemsStrong analytical and troubleshooting skillsExcellent written and verbal communication skillsSelf?driven learner with curiosity for modern tooling and AI?assisted developmentCollaborative mindset with the ability to influence across teams and functionsWHY JOIN USWork on mission?critical, globally distributed email security platformsSolve complex security and compliance challenges at enterprise scaleCollaborate with highly skilled engineers in a strong engineering cultureOpportunity to shape the long?term evolution of enterprise email security architecture