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Added 3 mins ago
EW
Senior Cloud Systems Engineer
East West Bank
El Monte, CA
- $175,000 USD / year
We are seeking a hands-on Cloud Engineer to design, build, automate, and support secure, reliable, and scalable cloud infrastructure. This role will primarily focus on Microsoft Azure and…
Added 3 mins ago
EW
Senior Site Reliability Engineer
East West Bank
El Monte, CA
- $175,000 USD / year
We are seeking an experienced Cloud Site Reliability Engineer (SRE) to improve the reliability, availability, performance, and operational efficiency of enterprise services running in…
Added 10 mins ago
CI
SRE Systems Engineer (TS/SCI Clearance)
Computable Insights LLC
VA
- $117,200 to $176,700 USD / year
With Agentforce woven into every layer of our platform, you help build resilient systems that millions of customers depend on every day.
Added 19 mins ago
Embedded SDE, Payload Radio Gateway
Amazon Kuiper Manufacturing Enterprises LLC
Sunnyvale, CA · Redmond, WA · San Diego, CA
Own unique embedded software functions through design, implementation (in C, C++, RUST or other), test, and integration in an embedded Linux or real-time operating system (RTOS) environment.
Added 19 mins ago
Embedded Software Engineer, Leo Payload Radio
Amazon Kuiper Manufacturing Enterprises LLC
Sunnyvale, CA · Redmond, WA · San Diego, CA
…(in C, C++ or other), test, and integration in an embedded Linux…
Added 21 mins ago
JL
Field Engineer I - Telemetry
JT4, LLC
Edwards AFB, CA
- $78,220 to $96,850 USD / year
JOB SUMMARY: Under close supervision, a Field Engineer I performs a variety of fundamental field engineering tasks in the installation, operations, testing, and maintenance of electronic…
Added 23 mins ago
Systems Engineer
Chenega Corporation
UNAVAILABLE, VA
The Systems Engineer provides on-site, 24/7/365 Tier 1 operations for Google Public Sector’s USG2 sovereign and classified cloud environments, initially supporting Google Distributed Cloud…
Added 23 mins ago
Senior Operations Lead
Chenega Corporation
UNAVAILABLE, VA
5+ years of hands-on experience in Linux systems administration, cloud operations, Site Reliability Engineering (SRE), or Kubernetes administration.
Added 23 mins ago
Senior Operations Lead
Chenega Corporation
UNAVAILABLE, VA
5+ years of hands-on experience in Linux systems administration, cloud operations, Site Reliability Engineering (SRE), or Kubernetes administration.
Added 23 mins ago
Systems Engineer
Chenega Corporation
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 26 mins ago
AI
Senior Embedded Software Engineer - Firmware
Applied Intuition
Sunnyvale, CA
- $187,075 to $253,000 USD / year
- Operating Systems & Build Tools: Linux, SafeRTOS, Bazel, Git
Added 26 mins ago
Senior Cloud Engineer
Company 1 - The Manufacturers Life Insurance Company
MA
Are you passionate about building scalable, secure, and modern cloud solutions? We're looking for a Senior Cloud Engineer who can combine deep technical expertise with business insight to…
Added 28 mins ago
C
Lead C++ Software Engineer - Palladium Emulation Platform
Cadence
United States
- $119,000 to $221,000 USD / year
…innovations in electronics worldwide. We are looking for a talented engineer to join our team and contribute to the world’s fastest emulator compiler development. You’ll have a great…
Added 29 mins ago
O
Senior Core Infrastructure Engineer- Nashville,TN
Oracle
Concord, NH
- $79,200 to $209,500 USD / year
Build expertise in C/C++, systems programming, cloud networking, Linux, and high-performance dataplane technologies.
Added 39 mins ago
Senior Test Infrastructure Engineer
NVIDIA USA
CA
…Center products. We are looking to hire a Test Infrastructure Engineer to join NVIDIA’s Test Solutions Group and build the infrastructure foundation for manufacturing system of board and…
Added 39 mins ago
Senior Software Engineer, Firmware
NVIDIA USA
CA
Excellent knowledge of development tools: build systems, version control systems (Git, Gerrit, GitLab), GitLab CI, Linux administration, and shell scripting (Bash, Python).
Added 41 mins ago
Senior IT Systems Engineer
ExtraHop
Remote, United States
We are seeking a Sr. IT Systems Engineer to ensure the 24x7 availability and performance of our infrastructure through secure, scalable cloud solutions and automation. This is a hybrid…
Added 45 mins ago
HPC Engineer
GD Information Technology, Inc.
United States
We are seeking an HPC Engineer to join a Scientific Technologies team supporting high-performance computing (HPC) and scientific research at NIAID. This role focuses on the administration,…
Added 45 mins ago
Senior IT Systems Engineer I
Rocket Lab Corporation
Long Beach, CA
Based onsite at Rocket Lab's global headquarters in Long Beach, CA, the Senior IT Systems Engineer will join a fast-paced, team-oriented manufacturing environment. This role will be…
Added 49 mins ago
Data Warehouse Architect
Hebrew SeniorLife, Inc.
Roslindale, MA
Working knowledge of Linux environments, with experience migrating Linux-based systems and workloads to standard, supported platforms.
Added 53 mins ago
Software Engineer II
Leonardo DRS, Inc.
Menomonee Falls, WI
The Leonardo DRS Naval Power Systems business is a trusted provider of innovative naval gas and hybrid power systems, control technology and support solutions for the U.S. Navy and navies…
Added 56 mins ago
O
Senior Core Infrastructure Engineer
Oracle
Nashville, TN
- $79,200 to $209,500 USD / year
Design, develop, and operate highly available, scalable, and fault-tolerant microservices across control plane, connectivity, distributed-systems data plane, and Linux daemon technologies.
Added 57 mins ago
Firmware Engineer
x Varian Medical Systems, Inc.
United States
Design and implement object-oriented embedded software in C++ deployed on VxWorks RTOS/Embedded Linux.
Added 58 mins ago
AI
Senior Software Engineer – Developer Studio
Applied Intuition
Sunnyvale, CA
- $255,653 to $265,000 USD / year
- Own and maintain backend systems for the Workbench platform, including core services responsible for reliability, uptime, and system stability in a distributed cloud environment.
Added 1 hour ago
Senior Flight Software Engineer
Planet
San Francisco, CA
…the success of Planet’s missions. As a Senior Flight Software Engineer for Superdove, you will lead ongoing development, verification, and on-orbit anomaly escalation for Planet’s core…

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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