Cloud Security Engineer

OneStream Software is an enterprise finance platform company that unifies financial and operational data and uses AI to support modern finance teams. The Cloud Security Engineer will protect and improve the security posture of OneStream’s Microsoft Azure and Microsoft 365 cloud environments through security monitoring, threat detection, vulnerability management, secure configuration, governance, compliance, and incident response.

Responsibilities:

• Design, implement, and continuously improve security controls and configuration baselines across Microsoft Azure and Microsoft 365, aligned with industry standards and frameworks
• Configure, administer, and optimize cloud security solutions, including Microsoft Defender for Cloud, Microsoft Defender for Endpoint, Microsoft Defender for Cloud Apps (CASB), and related technologies
• Conduct security assessments of cloud resources, applications, Azure Kubernetes Service (AKS), and containerized workloads to identify vulnerabilities, misconfigurations, excessive permissions, and other security risks
• Perform vulnerability management activities, including prioritizing findings, coordinating remediation efforts, and validating corrective actions
• Configure and enhance cloud security monitoring, threat detection, investigation, response, and automation capabilities using Microsoft Sentinel (SIEM), Kusto Query Language (KQL), and related technologies
• Collaborate with Cloud, Compliance, and other internal teams to ensure cloud services are designed, deployed, and maintained in accordance with security best practices, organizational standards, and industry hardening standards such as CIS Benchmarks and DISA STIGs
• Respond to customer security inquiries, assessments, and questionnaires by gathering, validating, and communicating information regarding security controls, cloud technologies, and security practices
• Develop and maintain technical documentation, procedures, dashboards, alerts, and reporting to improve security visibility and operational effectiveness
• Support internal and external audits by gathering evidence, validating control adherence, and demonstrating compliance with organizational, customer, and regulatory requirements
• Support incident response activities by investigating suspicious, anomalous, or unauthorized activity within cloud environments and participating in security investigations

Requirements:

• BS/BA in Cybersecurity, Computer Science, Engineering, or technology-related field (or equivalent work experience)
• 3+ years of experience securing cloud-based infrastructure, services and technologies
• Experience identifying, analyzing, and mitigating security risks within cloud environments
• Experience applying cloud security principles to secure cloud platforms, including Microsoft Azure, through secure configuration, least-privilege access, data protection, threat detection and response, and security hardening aligned with industry standards
• Experience deploying, administering, and using security technologies such as Microsoft Defender, SIEM, CASB, vulnerability management, and related security functions
• Working knowledge of Azure Log Analytics, Kusto Query Language (KQL), PowerShell, Bash, and REST APIs
• Working knowledge of identity and access management concepts, including Microsoft Entra ID, role-based access control (RBAC), authentication, authorization, and least-privilege access
• Working knowledge of Windows and Linux operating systems
• Familiarity with incident response, incident management, and change management processes
• Experience working for a Cloud Service Provider (CSP), Managed Service Provider (MSP), Software-as-a-Service (SaaS) provider, or similarly regulated cloud environment
• 5+ years of experience with Microsoft Azure, including securing cloud-native technologies, Azure Kubernetes Service (AKS), and containerized workloads
• Understanding of security controls and compliance frameworks such as NIST 800-53, FedRAMP, SOC 1, SOC 2, ISO 27001, or similar standards
• Understanding of identity and access management (IAM) concepts, technologies, and protocols including Microsoft Entra ID, Okta, SAML, OAuth, and OpenID Connect (OIDC)
• Experience with Infrastructure as Code (IaC) technologies and deployment practices, such as ARM, Bicep, Terraform, and Azure DevOps pipelines
• Working knowledge of network security principles, networking protocols (e.g., TCP/IP, DNS, TLS), and firewall technologies
• Familiarity with Agile, Scrum, and DevSecOps methodologies
• Relevant cybersecurity certifications (e.g., AZ-500, AZ-104, SC-200, SC-300, SC-100, Security+, Cloud+, or equivalent)