Infrastructure Security Engineer

Blue Signal Search; Lewes (DE); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Influence standards

Collaborative environment

Cloud tech exposure

Career growth

Job summary

Blue Signal Search is seeking an Infrastructure Security Engineer to strengthen its enterprise security program in Lewes, DE and Rehoboth Beach, DE. You will design, implement, and maintain security controls across Microsoft, AWS, and on‑premises infrastructure while partnering with technology leaders to modernize the environment.

This role balances strategic security initiatives with hands‑on engineering, focusing on identity management, vulnerability remediation, monitoring, and incident

Qualifications

• 3–5+ years in infrastructure engineering or related field.
• Hands-on with Microsoft technologies including AD, Entra ID, M365, Defender, and Sentinel.
• Experience securing hybrid cloud and on-prem environments.
• Ability to collaborate across technical teams.

Responsibilities

• Design, implement, and maintain security controls across Microsoft and AWS.
• Secure identity and access with AD, Entra ID, M365, and AWS IAM.
• Monitor, investigate, and respond to security events with monitoring platforms.
• Collaborate with infra and app teams to remediate vulnerabilities.
• Strengthen hybrid cloud and on‑prem security practices.
• Support security policy and documentation development.

Skills

Infrastructure engineering

Systems administration

Cybersecurity

Cloud security

PowerShell

Vulnerability management

Security monitoring

Incident response

Communication skills

Tools

Microsoft Defender

Microsoft Sentinel

Active Directory

Microsoft Entra ID

Microsoft 365

AWS IAM

Job description

Location: Onsite in Lewes, DE and Rehoboth Beach, DE

A well-established and growing organization is seeking an Infrastructure Security Engineer to play a key role in strengthening and advancing its enterprise security program. This is an opportunity to make a direct impact by protecting critical business systems while partnering with technology leaders to modernize infrastructure across cloud and on premises environments. If you enjoy balancing strategic security initiatives with hands on engineering work, this position offers the chance to influence security architecture, implement best practices, and help build a resilient technology environment.

This Role Offers

• Opportunity to help drive the evolution of an organization's cybersecurity strategy.
• Collaborative environment where security is integrated into enterprise technology initiatives.
• Exposure to modern Microsoft and AWS technologies within a hybrid infrastructure.
• High visibility role with the ability to influence security standards, architecture, and operational excellence.
• Stable organization with a strong commitment to technology investment and continuous improvement.

Focus

• Design, implement, and maintain security controls across Microsoft, AWS, and enterprise infrastructure environments.
• Secure identity platforms including Active Directory, Microsoft Entra ID, Microsoft 365, and AWS IAM through strong authentication, access governance, and privileged account management.
• Monitor, investigate, and respond to security events using enterprise security monitoring and endpoint protection platforms.
• Partner with infrastructure and application teams to identify vulnerabilities, prioritize remediation efforts, and improve overall security posture.
• Strengthen hybrid cloud and on premises environments by implementing security best practices across networking, firewalls, VPNs, endpoint protection, and identity services.
• Support security architecture reviews for infrastructure projects and technology deployments to ensure secure design principles are incorporated from the beginning.
• Assist in developing and maintaining security policies, technical standards, operational procedures, and documentation.
• Stay current on emerging cybersecurity threats, evolving technologies, and industry best practices while recommending continuous improvements.

Skill Set

• 3 to 5 or more years of experience in infrastructure engineering, systems administration, cybersecurity, or a closely related technical discipline.
• Strong hands on experience supporting Microsoft technologies including Active Directory, Microsoft Entra ID, Microsoft 365, Microsoft Defender, and Microsoft Sentinel.
• Experience administering AWS Identity and Access Management (IAM) and securing cloud infrastructure.
• Demonstrated experience protecting hybrid cloud and on premises environments, including networking, firewalls, VPNs, identity management, and enterprise security best practices.
• Familiarity with vulnerability management, security monitoring, incident response, and enterprise security operations.
• Experience with PowerShell or other automation tools is beneficial.
• Industry certifications related to Microsoft, AWS, or cybersecurity are a plus.
• Strong analytical thinking, communication skills, and the ability to collaborate across technical teams.