Senior Cybersecurity Engineer

@ APTIM

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 candidate will design, implement, and manage enterprise security solutions across cloud and on-premises environments while driving security best practices organization-wide.

Key Responsibilities/Accountabilities

• Security Architecture & Implementation: Design and implement security solutions using Microsoft Defender, Sentinel, Entra ID, and Purview.
• Cloud Security: Secure Microsoft Azure environments in compliance with NIST, CIS, and Zero Trust.
• Network Security: Audit and improve firewall policies, VPN configurations, and network segmentation strategies.
• Threat Detection & Response: Monitor and respond to security incidents using Microsoft Sentinel and SIEM tools.
• Identity & Access Management (IAM): Implement security policies for PAM, Conditional Access, and MFA.
• Vulnerability & Patch Management: Conduct security assessments, penetration testing, and vulnerability remediation.
• Security Automation: Utilize Defender XDR and SOAR tools for automated threat response.
• Compliance & Risk Management: Ensure adherence to CMMC, NIST CSF, NIST 800-171, and SOC 2 requirements.
• Collaboration & Stakeholder Engagement: Work with IT and business teams to align security strategies with organizational goals.
• Security Awareness & Training: Develop and deliver training to improve security posture.

Basic Qualifications

• Degree in Cybersecurity, IT, Computer Science or related field.
• 7+ years experience in cybersecurity, network or cloud security roles.
• Expertise in Microsoft Security solutions: Defender, Sentinel, Entra ID, and Purview.
• Experience with Azure security practices and network security fundamentals.
• Strong scripting skills in PowerShell, Python, or KQL.
• US Citizenship and ability to work at government sites.

Preferred Qualifications

• Certifications: Microsoft Certified: Cybersecurity Architect, AZ-500, CISSP, or CEH.
• Experience with hybrid cloud security strategies (Azure, AWS, on-prem).
• Familiarity with compliance frameworks: CMMC, NIST CSF, ISO 27001.
• Experience with additional security tools such as Fortinet, Silverfort, and BeyondTrust.
• Hands-on experience in security automation and SOAR tools.

About APTIM

APTIM is dedicated to advancing a clean and efficient energy economy while providing technical, data, and sustainability solutions. The company values respect, work-life balance, personal development, and community impact.

Benefits

The benefits package includes comprehensive health care, insurance plans, retirement program participation, paid time off, and additional voluntary benefits tailored to support employees and their families.

Compensation

The estimated pay range for this position is between 135,000 and 150,000 annually. Compensation is determined by experience, education, key skills, geographic location, and market factors.

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About APTIM - In Pursuit of Better

Key skills/competency

• Microsoft Defender
• Microsoft Sentinel
• Azure Security
• Network Security
• Identity Management
• Threat Response
• Compliance
• Security Automation
• Penetration Testing
• SIEM