💼 Full-Time Position

Senior SIEM & Detection Engineer

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TEKsystems
📍 Appleton, WI, United States
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Location
Appleton, United States
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Posted
June 13, 2026
Type
Full-Time
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Full-Time Opportunity: This is a permanent, full-time position with a competitive package and real career growth potential.

Job Description

Description
Senior SIEM & Detection Engineer (Contract)
Mandatory Shift: 3:00 PM – 11:00 PM EDT
Contract Length: 6 months (extension possible)
Work Model: Remote
Start: ASAP
The goal is to leave the environment cleaner, quieter, and more defensible than it is today.
Why This Role Exists
We are stabilizing and improving a large Microsoft-based detection environment as part of a broader Cyber Defense maturity initiative. Before formalizing long-term documentation and governance, we need to clean up detection quality, reduce noise, and improve confidence in our security signals—especially during after-hours coverage.
This role is Phase 1 of that effort.
What This Person Will Do
This is a Senior , hands-on SIEM / detection engineering role, not an analyst position.
Primary focus areas:
Tune and rationalize alerts in Microsoft Sentinel and Microsoft Defender XDR
Reduce false positives and alert fatigue
Improve signal quality and detection confid...