Security Operations Engineer

The posting, as Mastery Logistics Systems wrote it

ABOUT THE ROLE
"You'll build the detections that catch what alerts alone would miss, and the automation that keeps a lean team ahead of the threats."
As a Security Operations Engineer on Mastery's Information Security team, you'll own detection engineering and SOAR automation for MasterMind, our Azure-native transportation management platform. You'll design and tune the analytics rules running in Microsoft Sentinel, build automated response workflows that cut manual triage time, and close visibility gaps across our AKS, endpoint, and network telemetry as we bring new log sources online.
This role is ideal for a deeply technical engineer who wants to build and ship detections and automation — not manage people or run the team's day-to-day. If you'd rather spend the day in KQL and automation workflows than in a status meeting, this is built for you.
WHAT YOU'LL OWN
Detection Engineering

• Build real detections: design, write, and tune analytics rules and correlation logic in Microsoft Sentinel, aligned to MITRE ATT&CK.
• Close the gaps: identify and close visibility blind spots across our infrastructure and telemetry as new log sources come online.
• Reduce the noise: continuously validate and refine detections to cut false positives without losing real signal.

Automation & Response

• Automate the busywork: design and build SOAR playbooks and workflows that automate triage, enrichment, and response, freeing the analyst team to focus on real investigations.
• Integrate the stack: build and maintain integrations across Sentinel, Defender, and other security tooling via APIs and scripting.

Technical Depth & Threat Context

• Translate intel into detections: turn emerging threats and adversary TTPs into actionable, tuned detection logic.
• Stay hands-on: keep pace with evolving attacker techniques and Sentinel/SOAR platform capabilities through direct, ongoing technical work.

WHAT YOU BRING
Experience

• 4+ years in security operations, detection engineering, or a closely related technical security role.
• Demonstrated, hands-on experience building or substantially tuning detection rules and correlation logic in a SIEM (Sentinel strongly preferred).
• Experience building SOAR playbooks or comparable security automation workflows.

Skills & Approach

• Deep query language fluency: comfortable writing and debugging complex KQL (or equivalent SIEM query language) without hand-holding.
• Scripting and API proficiency: Python or PowerShell for automation, with experience integrating tools via REST APIs.
• Self-directed technical focus: prefers to own and ship technical work independently over managing people or processes.

Nice to Have

• Experience in an Azure/AKS or other Kubernetes-based cloud environment.
• Experience supporting SOC 2 or similar compliance audits from a technical evidence standpoint.
• Familiarity with Sentinel Logic Apps or another SOAR automation platform.

HOW YOU'LL KNOW YOU'RE SUCCEEDING

• Detection coverage me

[…]
platform that helps this industry move faster, smarter, and more efficiently — tackling everything from AI-powered data ingestion to intelligent automation.

We are a masterful mosaic of specialists, builders, and genuinely good people. Different backgrounds, different talents, one shared obsession: creating something the industry has never had. We believe in diversity of thought, deep respect for each other, and the relentless pursuit of getting it right. We're small enough that every person makes a real impact — technically and culturally — and deliberate enough that we only add people who make the whole better.

If you're passionate about humanizing a complex industry, building for scale, and touching every corner of the global economy — welcome home. Let's build a masterpiece.

BENEFITS — BECAUSE YOU SHOULD LOVE WHERE YOU WORK AND HOW YOU'RE TAKEN CARE OF
We don't do "bare minimum" here — not in the product, not in the culture, and definitely not in how we take care of our people. Mastery's benefit package is built to give you real coverage, real flexibility, and real peace of mind.

🏥 Medical, Dental & Vision
Comprehensive health coverage so you can focus on the work, not the what-ifs.
🛡️ Life & AD&D Insurance
Company-paid life insurance at 1× your salary, plus AD&D and additional voluntary coverage options.
⚖️ Legal & Employee Assistance
Legal assistance and employee support programs — for life's messier moments, big and small.
📈 401(k) with 4% Match
We invest in the platform and in your future. Save for retirement with a competitive company match.
🗓️ Flexible PTO
Manage your life and your schedule. We trust you to do great work and take the time you need to recharge.
❤️ Giving Back — St. Jude Children's Research Hospital
Our philanthropic partner is St. Jude Children's Research Hospital. Because doing good work and doing good in the world aren't mutually exclusive.

Robust benefits. Real flexibility. A team that has your back. That's the Mastery standard.