Job description

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 standard of excellence. What you can expect from APTIM: • Work that is worthy of your time and talent • Respect and flexibility to live a full life at work and at home • Dogged determination to deliver for our clients and communities • A voice in making our company better • Investment into your personal and professional development As of the date of this posting, a good faith estimate of the current pay range for this position is $135K to $150K per year. Compensation depends on several factors including: experience, education, key skills, geographic location of the position, client requirements, external market competitiveness, and internal equity among other employees within APTIM. Employee Benefits Aptim Corp, is committed to providing an extensive range of benefits that protect and promote the health and financial well-being of our employees and their families through the APTIM Benefits Marketplace https://aptim.makeityoursource.com/. • Medical, vision, and dental insurance: Through the marketplace, our employees can choose benefits from five metallic levels and 10+ carriers to find the right benefits that work for them in their location. • Life insurance • Short-term and long-term disability insurance • Paid holidays, vacation, and sick leave (eligibility based on company policy and applicable law) • 401(k) APTIM offers three 401k plans through the Aon Pooled Employer Plan (PEP). The specific plan you are eligible for depends on the business unit you are in. The details of the largest plan are found here: • * APTIM 2025 401(k) Plan Features (makeityoursource.com) • APTIM - Helpful Documents Watch our video: About APTIM - In Pursuit of Better

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