Senior Cybersecurity Engineer

Job Overview:

APTIM is seeking a highly experienced Senior Cybersecurity Engineer with expertise in the Microsoft Security Stack and network security to join our growing team. The ideal candidate will have extensive experience designing, implementing, and managing enterprise security solutions, securing cloud and on-premises environments, and driving security best practices across the organization.

Key Responsibilities/Accountabilities:

• Security Architecture & Implementation: Design and implement security solutions leveraging the Microsoft Security Stack, including Microsoft Defender, Sentinel, Entra ID (Azure AD), and Purview.
• Cloud Security: Secure Microsoft Azure environments, ensuring compliance with industry standards and frameworks such as NIST, CIS, and Zero Trust Architecture.
• Network Security: Audit and improve firewall policies, VPN configurations, and network segmentation strategies to protect enterprise assets.
• Threat Detection & Response: Utilize Microsoft Sentinel and other SIEM solutions to monitor, detect, and respond to security incidents.
• Identity & Access Management (IAM): Implement and enforce security policies for Privileged Access Management (PAM), Conditional Access, and Multi-Factor Authentication (MFA).
• Vulnerability & Patch Management: Conduct regular security assessments, penetration testing, and vulnerability remediation for both cloud and on-premise systems.
• Security Automation: Leverage Microsoft Defender XDR and SOAR tools to automate threat response and incident handling.
• Compliance & Risk Management: Ensure alignment with regulatory requirements such as CMMC, NIST CSF, NIST 800-171, and SOC 2.
• Collaboration & Stakeholder Engagement: Work closely with IT, Business Systems, and project teams across business lines to align security strategies with organizational goals.
• Security Awareness & Training: Develop and provide security training for internal teams to improve security posture and awareness.

Basic Qualifications:

• Degree in Cybersecurity, Information Technology, Computer Science, or a related field desired.
• 7+ years of experience in cybersecurity, network security, or cloud security roles.
• Strong expertise in Microsoft Security solutions, including: - Microsoft Defender (for Endpoint, Identity, Cloud, and Office 365) - Microsoft Sentinel (SIEM/SOAR) - Entra ID (Azure AD), Conditional Access, and Identity Protection - Microsoft Purview and Compliance solutions
• Experience with Azure security best practices, Azure Security Center, and Azure Policy.
• Proficiency in network security concepts, including firewalls, IDS/IPS, VPNs, and network segmentation.
• Strong knowledge of Zero Trust principles and architecture.
• Experience in incident response, threat hunting, and digital forensics.
• Strong scripting skills in PowerShell, Python, or KQL for security automation.
• Excellent analytical, problem-solving, and communication skills.
• Must be US Citizen and be able to work at government sites

Preferred Qualifications:

• Certifications such as Microsoft Certified: Cybersecurity Architect (SC-100), Azure Security Engineer Associate (AZ-500), CISSP, or CEH.
• Experience with hybrid cloud security strategies (Azure, AWS, on-prem).
• Familiarity with CMMC, NIST CSF, ISO 27001, and other security compliance frameworks.
• Experience with security tools such as Sentinel, Defender, Fortinet, Silverfort, BeyondTrust.
• Knowledge of DevSecOps practices and infrastructure-as-code
• Hands-on experience with security automation and SOAR tools.

ABOUT APTIM
APTIM is committed to accelerating the transition toward a clean and efficient energy economy, building a sustainable future for our communities and natural world, and creating a more inclusive and equitable environment that celebrates the diversity of our communities. We specialize in environmental, resilience, and sustainability and energy solutions, as well as technical and data solutions, program management, and critical infrastructure. For every challenge our clients face, there is an opportunity for APTIM to innovate a fit-for-purpose solution that will raise your organization or community to a new standa