Security Engineer (ON-SITE in Wallingford, CT)

Systems Integration Inc.; Wallingford (CT); On-site; USD 105,000 - 145,000; Full time

Job summary

Systems Integration Inc. in Wallingford, CT seeks a Security Engineer (Future Security Practice Lead) to build a security practice from the ground up. This in-person, 5-days-a-week role is hands-on and strategic, with a path to Security Manager.

You will lead security initiatives, own operations, and guide clients through security transformation. You’ll work across phases to implement security controls, define standards, and mentor junior team members while collaborating with clients and

Qualifications

• Hands-on cybersecurity experience with MSP, SOC, or IT services
• Experience deploying endpoint protection and patching platforms
• Strong knowledge of Microsoft 365 and Azure AD environments
• Familiar with compliance frameworks (NIST 800-171, CMMC, ITAR, HIPAA, SOC 2)
• Proven ability to own security projects end-to-end

Responsibilities

• Phase 1: Own daily security operations including endpoint protection, patching, IAM, vulnerability scanning, logging and monitoring
• Deploy and manage tools such as SentinelOne, Huntress, Defender, Azure AD, Intune, Conditional Access, and MFA
• Support compliance initiatives (CMMC, ITAR, NIST, HIPAA) and perform internal security assessments
• Evaluate and implement SIEM, EDR, email filtering, and threat intelligence tools
• Respond to security events and coordinate incident resolution and reporting
• Collaborate with service desk and engineering to remediate risks and enforce baselines
• Assist in vendor and tool selection as the organization scales

Skills

Security operations

Security governance

Stakeholder communication

Tools

SentinelOne

Microsoft Defender

Huntress

Azure AD

Intune

Conditional Access

MFA

Job description

THIS IS AN IN-PERSON ROLE, 5 DAYS A WEEK, WITH A DAILY COMMUTE TO WALLINGFORD, CT. DO NOT APPLY IF YOU CANNOT GET TO WALLINGFORD, CT 5 DAYS A WEEK! NO HYBRID OR REMOTE WORK.

This role is not for software developers.

Job Title: Security Engineer (Future Security Practice Lead)

Reports To: Operations Manager

About the Role

We are seeking a Security Engineer who is ready to roll up their sleeves and help build a world-class security practice from the ground up.

This role is both hands-on and strategic. You’ll serve as the technical lead on security initiatives while developing into a future Security Manager or Practice Lead — helping define strategy, build a team, and guide clients through security transformation.

If you want to build something meaningful and own it, this is that opportunity.

Key Responsibilities

Phase 1: Hands-On Security Implementation (The Doer)

• Own daily security operations: endpoint protection, patch management, identity & access controls, vulnerability scanning, logging, and monitoring
• Deploy and manage tools such as SentinelOne, Huntress, Microsoft Defender, Azure AD, Intune, Conditional Access, and MFA
• Perform internal security assessments and support compliance initiatives (CMMC, ITAR, NIST, HIPAA)
• Evaluate and implement SIEM, EDR, email filtering, and threat intelligence tools
• Respond to security events and manage incident resolution and reporting
• Partner with service desk and engineering teams to remediate risks and enforce security baselines
• Assist in vendor and tool selection as we scale and standardize

Phase 2: Strategic Growth & Leadership (The Builder)

• Define and document security standards, baselines, and SOPs
• Contribute to service packaging, pricing, and go-to-market strategy
• Establish governance processes and client risk scoring models
• Hire, mentor, and manage junior security team members over time
• Represent security initiatives in client QBRs and leadership discussions

Qualifications

• Must-Have Experience
• 3–5 years of hands-on cybersecurity experience (MSP, SOC, or IT services preferred)
• Experience with endpoint protection (SentinelOne, Defender, Huntress), SIEM tools, firewalls, email security, and patching platforms
• Strong experience in Microsoft 365 and Azure AD environments
• Knowledge of compliance frameworks (NIST 800-171, CMMC, ITAR, HIPAA, SOC 2)
• Proven ability to own and execute security projects end-to-end

Preferred Qualifications

• Certifications such as Security+, CISSP, SSCP, CISA, or Microsoft SC-200
• Experience with MDR/EDR/XDR, vulnerability management, or security automation (PowerShell, scripting)
• Experience documenting policies and working with GRC tools
• Previous experience mentoring or leading technical team members

Soft Skills

• Entrepreneurial mindset — thrives in a “build mode” environment
• Strong communicator who can translate technical risk into business impact
• Detail-oriented with strong documentation and follow-through
• Growth-driven with a long-term focus on leadership