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Security Data Engineer - Senior Modern Technology Solutions, Inc - 4.4 Colorado Springs, CO Job Details 18 hours ago Benefits Disability insurance Health insurance Tuition reimbursement Paid time off 401(k) 6% Match 401(k) matching Employee stock ownership plan Flexible schedule Life insurance Qualifications Intrusion detection analysis Threat hunting activities Data Integration (Data management) XML Testing and evaluation Gap analysis TLS Event-driven architecture VLAN Requirements analysis APIs Network routing

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MITRE ATT&CK

Security Testing Metadata management IT security monitoring Full Job Description Modern Technology Solutions, Inc. (MTSI) is searching for a Senior Security Data Engineer in support of United States Space Force (USSF) Space Systems Command (SSC) and Combat Forces Command (CFC) Defensive Cyber Operations. We are seeking a Security Data Engineer to own our security telemetry pipeline end-to-end. You will be responsible for ensuring that the organization collects, ingests, normalizes, and maintains the security telemetry required to support network traffic monitoring, threat hunting, custom detection engineering, and adversary detection. The candidate will ensure the organization has the telemetry necessary to detect the adversary behaviors necessary to identify, protect, and defend our mission and customers. The candidate will be responsible for developing the processes and procedures for identifying, onboarding, and optimizing network and application traffic data sources (e.g., NetFlow, PCAP, proxy logs, VPC flow logs, DNS, etc.) to feed centralized and deployed detection solutions. Additionally, you will partner with organizational personnel to write, tune, and maintain custom threat detections based on high-quality traffic ingestion. The engineer will determine what data is required to detect specific adversary behaviors, where that data originates, how it should be collected, and whether the resulting telemetry provides sufficient visibility to support reliable detections. The engineer is responsible for understanding the detection objective and working backward to ensure the organization has the appropriate data sources, telemetry fields, collection methods, retention, normalization, and data quality necessary to achieve that objective.

Role and Responsibilities:

The candidate will architect, build, and maintain data pipelines ingesting network traffic, VPC flow logs, firewall/proxy logs, DNS records etc. into the organization's centralized systems. The candidate will; ensure ingested data is structured, normalized (e.g., OCSF or CIM standard), and continuously parsed correctly for immediate querying and correlation. Design, write, and deploy high-fidelity detection rules using SQL, Sigma, YARA-L, or Python targeting network-based attack techniques (e.g., C2 beaconing, data exfiltration, and lateral movement). Continuously tune network detections to reduce false-positive rates while maintaining a high signal-to-noise ratio. Identify telemetry required to support network monitoring, threat hunting, incident response, and custom detection engineering. Map detection requirements to underlying data sources and identify visibility gaps across hybrid cloud and on-premises environments Design and maintain pipelines that ingest security telemetry from network, endpoint, identity, cloud, application, OT, and security infrastructure. Ensure telemetry is delivered reliably to SIEM, data lake, analytics, and detection platforms; troubleshoot ingestion, parsing, latency, and data-quality issues. Evaluate whether packet, flow, session, DNS, proxy, authentication, endpoint, and application telemetry is sufficient for specific detection requirements. Support custom detection development through data discovery, enrichment, normalization, and validation. Identify opportunities to move detections from low-level indicators toward higher-level behavioral and tradecraft-based detection using the Detection Stack. Work with network engineering teams to evaluate technologies such as network sensors, NetFlow/IPFIX, DNS telemetry, proxy telemetry, firewall logs, IDS/IPS, packet capture, Zeek/network metadata, and NDR platforms. Establish telemetry health metrics, dashboards, and automated checks for missing, delayed, or malformed data. Assess network visibility across data centers, cloud environments, remote networks, and segmented environments. Optimize telemetry architectures and ingestion pipelines for performance, scalability, reliability, and cost

Required:

Strong understanding of; network security monitoring and security telemetry.

MITRE ATT&CK

framework, adversary behaviors, TCP/IP, DNS, HTTP/HTTPS, TLS, SMTP, DHCP, SSH, SMB, and common network protocols. Experience in; translating detection requirements into specific data and telemetry requirements. Understanding of; packet capture, network flows, network metadata, and session-level telemetry. Experience with technologies such as NetFlow/IPFIX, Zeek, Wireshark, IDS/IPS, firewalls, proxies, or network detection platforms, network segmentation, routing, VLANs, VPNs, cloud networking, and encrypted traffic. Experience designing or maintaining security data ingestion pipelines. Understanding of APIs, syslog, message queues, streaming data, and event-based architectures. Experience working with JSON, XML, CSV, CEF, LEEF, ECS, or other security-data formats. Strong understanding of data normalization, parsing, enrichment, transformation, and schema management. Experience with at least one scripting language such as Python. Ability to conduct data-source and detection-gap assessments. Experience working with threat hunting or purple-team activities. Understanding of adversary emulation and controlled security testing.

Desired:

Hands-on experience building security telemetry pipelines and supporting SIEM, data lake, or analytics platforms. Experience writing or tuning detections using SQL, Sigma, YARA-L, Python, or similar. Familiarity with MITRE ATT&CK, detection engineering, and Purple Team validation. Ability to work with network, infrastructure, and cyber operations teams to enable and validate telemetry sources. Strong written and verbal communication skills for technical analysis and stakeholder engagement. Prior experience supporting federal, DoD, or USSF cyber environments is highly desirable.

Education Requirements:

Bachelor's degree in cybersecurity, computer science, security engineering, data science, network security, or a related field and 18 years of relevant professional experience; or Master's degree in one of the same fields and 10 years of relevant professional experience

Clearance Requirements:

Must possess a Top Secret with SCI eligibility. SAR/SAP experience is highly desirable.

Location/Travel Requirements :

Place of work is Colorado Springs; remote work opportunity is limited. You may be required to travel periodically, less than 20%. The pay range for this position in Colorado is $155,000/year to $195,000/year; however, base pay offered may vary depending on established government contract ranges, job-related knowledge, skills, and experience, and other factors. MTSI also offers a full range of medical, financial, and other benefits, dependent on the position offered. Base pay information is based on market location. Applications will be accepted on an ongoing basis. This posting will be renewed periodically until the position is filled. #LI-MW2 #

MTSI TS/SCI

Perks and Benefits Vacation:

New Hires Accrue 20 days of PTO and 10 Holidays per

Year Health Insurance:

Zero Deductible Health Plans Flexible Schedules:

Flex Schedules Professional Development:

Up to $10,000

Annual Education/Training Reimbursement ESOP:

Funded Stock Ownership Plan 401k Match+: 6% 401k Match +

Immediate Vesting Bonus Program:

Semi-Annual Bonus Opportunity Mentorship:

Career Mentorship Programs Why is MTSI a great place to work

Interesting Work:

Our co-workers support some of the most important and critical programs to our national defense and security.

Values:

Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry. 100%

Employee Owned:

We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year. Great Benefits - Most Full-Time Staff Are Eligible for: Starting PTO accrual of 20 days PTO/year + 10 holidays/year Flexible schedules 6% 401k match with immediate vesting up to $9k annually Semi-annual bonus eligibility (July and Decemeber) Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account Up to $10,000 in annual educational reimbursement Other company funded benefits, like life and disability insurance Optional zero deductible Blue Cross/Blue Shield health insurance plan

Track Record of Success:

We have grown every year since our founding in 1993. Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide. For more information about MTSI, please visitwww.mtsi-va.com EEO Statement MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities. Why is MTSI a great place to work

Interesting Work:

Our co-workers support some of the most important and critical programs to our national defense and security.

Values:

Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry. 100%

Employee Owned:

We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year. Great Benefits - Most Full-Time Staff Are Eligible for: Starting PTO accrual of 20 days PTO/year + 10 holidays/year Flexible schedules 6% 401k match with immediate vesting up to $9k annually Semi-annual bonus eligibility (July and Decemeber) Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account Up to $10,000 in annual educational reimbursement Other company funded benefits, like life and disability insurance Optional zero deductible Blue Cross/Blue Shield health insurance plan

Track Record of Success:

We have grown every year since our founding in 1993. Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide. For more information about MTSI, please visit www.mtsi-va.com