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Added 11 mins ago
System Engineer
Exegy
St Louis, MO
We are seeking an experienced System Engineer to join our Managed Services Engineering (MSE) team in St. Louis, MO. You will be our lead specialist in Linux systems, bare-metal…
Added 15 mins ago
Lead Software Engineer - Python
Wells Fargo Bank, N. A.
IRVING, TX · CHARLOTTE, NC
…security, risk, and release processes, which fits the broader Senior Software Engineer profile…
Added 22 mins ago
Senior Security Research Engineer
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…our endpoint and SIEM security solution. We are looking for a Senior Security Research Engineer to help lead our efforts to build innovative features that secure our users against the…
Added 26 mins ago
Software Quality Engineer, Senior
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Annapolis Junction, MD
Software Quality Engineer, SeniorThe Opportunity:
Added 39 mins ago
YH
Paranoids Senior Container Security Engineer
Yahoo Holdings Inc.
United States
- $128,250 to $266,875 USD / year
…the program keep maturing. You'll build relationships across platform and product teams to get security work prioritized and delivered, make pragmatic calls that balance security with…
Added 42 mins ago
Cloud Infrastructure Engineering Specialist
Altamira Technologies Corp.
Suitland, MD
Position: Cloud Infrastructure Engineering Specialist (Senior)
Added 50 mins ago
Senior Security Research Engineer
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Added 58 mins ago
Senior Platform Engineer
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Austin, TX
As a Software Engineer on the Self-Service Analytics Platform team, you will strengthen the reliability and evolution of a critical platform used by analytics teams across Schwab. You will…
Added 58 mins ago
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Staff Software Engineer - Frameworks
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Seattle, WA · Mountain View, CA · San Francisco, CA · Pittsburgh, PA
- $171,000 to $303,000 USD / year
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Added 1 hour ago
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Senior Cloud Operations Engineer
Pantheon Data
Reston, VA
- $82,000 to $190,000 USD / year
Pantheon Data is seeking a Senior Cloud Operations Engineer to build, run, and continuously improve the AWS GovCloud infrastructure that hosts our ML-enabled workloads and applications for…
Added 1 hour ago
Senior Data Center Engineer
USP
Rockville, MD
Senior Data Center Engineer, The United States Pharmacopeial Convention, Rockville, MD.
Added 1 hour ago
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Google Cloud Engineer
Markon
Herndon, VA
- $170,000 to $200,000 USD / year
Markon is seeking an experienced Google Cloud Engineer (Mid–Senior) to support an Intelligence Community client in Chantilly, Virginia. This position will design, deploy, secure, and…
Added 1 hour ago
Senior DevOps Engineer
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Added 1 hour ago
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Senior Associate System Engineer
Oracle
United States
- $23.8 to $56.83 USD / hour
As a Senior Associate System Engineer on the Upgrade Center Integrated Technologies team, you will be responsible for providing consulting implementation and upgrade services to clients…
Added 1 hour ago
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Senior Associate System Engineer
Oracle
United States
- $23.8 to $56.83 USD / hour
As a Senior Associate System Engineer on the Upgrade Center Integrated Technologies team, you will be responsible for providing consulting implementation and upgrade services to clients…
Added 1 hour ago
O
Senior Associate System Engineer
Oracle
United States
- $23.8 to $56.83 USD / hour
As a Senior Associate System Engineer on the Upgrade Center Integrated Technologies team, you will be responsible for providing consulting implementation and upgrade services to clients…
Added 1 hour ago
Senior Security Architect - TS/SCI
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Bethesda, MD
As a Cloud Cyber Security Engineer, you will be responsible for providing technical security expertise in securing, hardening, and maintaining compliance of cloud-based software platforms…
Added 1 hour ago
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Senior Detection Engineer
Solutions³ LLC
Arlington, VA
- $131,000 to $150,000 USD / year
Solutions³ LLC is seeking an experienced and technically proficient Senior Detection Engineer who develops, validates, deploys, and tunes detection logic supporting proactive threat hunting…
Added 1 hour ago
SL
Senior Detection Engineer
Solutions³ LLC
Arlington, VA
- $131,000 to $150,000 USD / year
Solutions³ LLC is seeking an experienced and technically proficient Senior Detection Engineer who develops, validates, deploys, and tunes detection logic supporting proactive threat hunting…
Added 2 hours ago
Senior System Tests & Diagnostics Engineer
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Austin, TX
We are seeking a highly skilled System Tests & Diagnostics Engineer to develop, extend, and integrate specialized silicon validation and diagnostics tools for next-generation AI SoCs.
Added 2 hours ago
Software Engineer - Forensics
Everpure
Santa Clara, CA
…storage deployments for top-tier hyperscale partners. As a Senior Software Engineer on the Hyperscale Product Escalations team (known internally as a Forensics Engineer), you will serve as…
Added 2 hours ago
Systems Engineer
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UNAVAILABLE, VA
The Systems Engineer provides on-site, 24/7/365 Tier 1 operations for Google Public Sector’s USG1 sovereign and classified cloud environments, initially supporting Google Distributed Cloud…
Added 3 hours ago
Infrastructure Architect
Mesa Brand
Madison, AL
…identity, Microsoft 365, Azure, and endpoint management. This is a senior, hands-on role. You will design solutions, build and change production systems yourself, lead incident response,…
Added 3 hours ago
Senior Dynatrace Observability Engineer / Subject Matter Expert (SME)
Derex Technologies Inc
Remote, United States
Position: Senior Dynatrace Observability Engineer / Subject Matter Expert (SME)
Added 3 hours ago
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Cyber Implementation Engineer III
RISA
Springfield, VA
- $117,000 to $128,000 USD / year
RISA is hiring a Cybersecurity Implementation Engineer to build, deploy, and sustain the cybersecurity infrastructure of an Intelligence Community customer, on premises and in the cloud.…

Solutions³ LLC

Senior Detection Engineer

Arlington, VA, United States

$131,000 to $150,000 USD / year

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Job details

Pay: $131,000 to $150,000 USD / year
Apply by: Jan 31, 2027
Experience: 10+ years of directly relevant experience
Posting language: English
Posted: Nov 2, 2026

Original job description

Title: Subject Matter Expert I

Description:

Solutions³ LLC is supporting a U.S. Government customer to support for onsite incident response to civilian Government agencies and critical asset owners who experience cyber-attacks, providing immediate investigation and resolution. Contract personnel perform investigations to characterize the severity of breaches, develop mitigation plans, and assist with the restoration of services.

Solutions³ LLC is seeking an experienced and technically proficient Senior Detection Engineer who develops, validates, deploys, and tunes detection logic supporting proactive threat hunting across federal and critical infrastructure environments. This role combines advanced threat hunting tradecraft, adversary behavior analysis, and detection engineering to identify sophisticated threats, close visibility gaps, and improve detection effectiveness.

The engineer translates threat intelligence, hunt findings, and incident response lessons into reliable behavioral analytics, investigative queries, and automation. This work moves the team beyond individual hunts toward faster, repeatable, and scalable operations. Working across endpoint, network, identity, and cloud telemetry, the engineer selects detection methods based on available evidence and mission requirements. The position serves as the technical bridge between threat hunters, technical delivery teams, system engineers, analytics developers, and data scientists, turning operational findings into validated detections, automation, sensing improvements, and actionable capability requirements.

Salary Range: $131,000 - $150,000 Location: Arlington, VA Job Type: Onsite

Eligibility:

Must be a US Citizen
Must have an active TS/SCI clearance
Must be able to obtain DHS Suitability prior to starting employment
10+ years of directly relevant experience

Responsibilities Include:

Develop and test hypotheses to uncover persistence, privilege escalation, credential access, lateral movement, command and control, and defense evasion. Correlate evidence across data sources and document defensible conclusions.
Build behavioral analytics, correlation rules, signatures, and queries using endpoint, network, identity, cloud, and application telemetry. Target adversary techniques and activity sequences rather than individual indicators of compromise.
Convert validated hunt methods, incident findings, and exercise results into reusable detections. Document each detection’s purpose, data requirements, investigative guidance, assumptions, and known limitations. Translate remaining gaps into technical requirements and acceptance criteria, recommend priorities through Threat Hunting governance, and verify that delivered capabilities meet the operational need.
Test detections against representative malicious and benign activity using historical telemetry, controlled simulations, and purple team exercises. Verify intended behavior, evaluate evasion opportunities, and retain test evidence.
Analyze false positives, false negatives, alert volume, thresholds, exclusions, and environmental baselines. Improve detection fidelity and alert context through enrichment and prioritization, while assessing the risk of suppressing legitimate threat activity.
Assess the availability, reliability, and quality of sensors, tools, and data sources. Identify collection, parsing, normalization, and retention gaps and explain their impact on active hunts and production detections. Coordinate remediation with infrastructure teams and validate restored coverage.
Develop and maintain automation for enrichment, query execution, analytical workflows, and detection validation, including SOAR playbooks where applicable. Tune data pipelines and queries for speed and responsiveness. Build in review, error handling, and recovery procedures.
Maintain version-controlled content, peer reviews, release criteria, approval records, and rollback procedures. Revalidate analytics after platform, schema, environmental, or adversary tradecraft changes.
Coordinate with hunters, incident responders, intelligence analysts, and platform engineers to integrate detections into investigative and automated workflows.
Measure validated detection coverage, fidelity, actionable findings, and remaining gaps. Communicate the operational significance of technical findings and avoid equating rule counts with effective coverage.
Partner with analytics developers and data scientists to develop and validate advanced analytics, including machine learning where appropriate. Assess operational value, false positives, data dependencies, and analytical limitations.
Provide technical leadership supporting the section focal point for vulnerability management (VM) and threat hunting (TH) activities under applicable authorities. Develop exercises cenarios and expected detection outcomes, assess sensing failures, and track corrective actions.
Evaluate new tools, data sources, and analytical methods against identified mission gaps. Document test results, operational limitations, and adoption recommendations.
Review analytical work, mentor analysts, and set standards for query development, documentation, testing, deployment, and tuning. Develop and maintain detection engineering competencies, Job Qualification Requirements (JQRs), training scenarios, and practical assessments in coordination with section leadership.

Required Skills:

Demonstrated senior-level experience in threat hunting, detection engineering, incident response, or closely related defensive cyber operations, including independent ownership of production detection content.
Strong command of hypothesis development, adversary behavior analysis, iterative investigation, and evidence-based conclusions.
Proven ability to develop, test, deploy, and tune production detections, explain their limitations, and assess the effects of exclusions and suppression.
Advanced proficiency in one or more security query languages (KQL, SPL, EQL, ES|QL, or vendor-specific EDR languages), with the ability to adapt and optimize logic across platforms.
Experience analyzing process execution, command lines, process ancestry, authentication, persistence mechanisms, network connections, and related enterprise telemetry.
Understanding of Windows and Linux internals, enterprise networking, identity systems, cloud telemetry, and sophisticated adversary tradecraft.
Practical experience mapping detections to MITRE ATT&CK and explaining the telemetry, test evidence, and limitations behind coverage claims.
Proficiency in Python and PowerShell, or comparable languages, for analysis, enrichment, testing, and automation.
Ability to clearly document detection intent, logic, validation results, investigation steps, and tuning decisions.
Experience translating operational findings into engineering requirements and acceptance criteria, validating sensing effectiveness, and coordinating improvements across hunt analysts and delivery teams.

Desired Skills:

Experience with CrowdStrike Falcon, Microsoft Defender, Cortex XDR, SentinelOne, Elastic, Splunk, or comparable platforms.
Experience with portable detection content such as Sigma
Experience with detection-as-code and automated testing
SIEM data onboarding and pipeline tuning experience
Experience with adversary emulation and cyber exercise development
Federal civilian or critical infrastructure cyber operations experience
Experience with maintaining detection engineering competencies, Job Qualification Requirements, training scenarios, and practical assessments

Desired Certifications:

GIAC Certified Detection Analyst (GCDA)
GIAC Certified Forensic Analyst (GCFA)
GIAC Defending Advanced Threats (GDAT)
GIAC Certified Intrusion Analyst (GCIA)
GIAC Certified Incident Handler (GCIH)
GIAC Cyber Threat Intelligence (GCTI)
Microsoft Certified: Security Operations Analyst Associate (SC-200)
Certified Information Systems Security Professional (CISSP)

Required Education: Bachelor’s degree in Engineering, Computer Science, Cybersecurity, Information Systems, or related field (Master's Degree preferred)

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More about this job

Skills

Incident response
Prioritization
Machine learning
Leadership
Work analytically
Documentation
Query languages
Microsoft Windows
Linux
MITRE ATT&CK
Python
Microsoft PowerShell
Splunk
Test automation
Onboarding
CISSP
Computer science
Cybersecurity

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