System Engineer III

Reflexive Concepts, LLC; San Antonio (TX); On-site; USD 90,000 - 150,000; Full time

Job summary

Reflexive Concepts, LLC is seeking two Watch Desk Engineers to monitor and maintain mission systems around the clock. The team will handle system health, data pipelines, and incident recovery while maintaining logs, SOPs, and performance reports.

The roles require deep SE expertise, DoD-aligned documentation, and the ability to work rotating 12-hour shifts in a Central time zone. Candidates should have Security+ and strong Linux skills.

Qualifications

• Twenty years of SE experience in programs/contracts of similar scope and complexity.
• Security+ certification (or ability to obtain within six months).
• Linux and command-line proficiency.
• Hardware, software, network, and data-flow troubleshooting.
• Clear communication and documentation skills.
• Ability to follow and maintain SOPs, prioritize incidents, and work independently in a 24x7 environment.
• Experience with Jira, Confluence, Rancher, Elasticsearch, Redis, NiFi, Docker, Kubernetes, AWS, and virtualization.
• Experience with monitoring tools such as Nagios, Grafana, and Prometheus.
• Demonstrated experience planning and leading Systems Engineering efforts.
• Ability to work rotating 12-hour day or night shifts (Central time zone).

Responsibilities

• Monitor system health, availability, performance, and data pipelines.
• Investigate alerts and incidents and perform recovery actions.
• Escalate unresolved issues to the appropriate teams.
• Maintain tickets, shift logs, SOPs, metrics, and reports.
• Provide concise status updates and shift handoffs.
• Develop and review system engineering documentation (SEPs, ICDs, requirements).
• Elicit, derive, and manage system requirements with traceability.
• Define interfaces and capture in shared repository.
• Develop architectures using DoDAF and SOA; conduct trade studies.
• Coordinate system integration and verification activities across teams.
• Assess and mitigate program risks, including EVM data.
• Manage configuration and baseline; participate in CCB and IPTs.
• Support DoD Certification & Accreditation and IA requirements.
• Perform quantitative analysis of non-functional performance and use models/prototyping to reduce risk.
• Provide technical direction for development, integration, and testing; review WBS and IMP.

Skills

Clear communication

Documentation

24x7 environment

System Engineering leadership

Education

Bachelor's degree in System Engineering / CS / IS / Engineering Science

Tools

Jira

Confluence

Rancher

Elasticsearch

Redis

NiFi

Docker

Kubernetes

AWS

virtualization

Nagios

Grafana

Prometheus

Job description

Reflexive Concepts is seeking a skilled System Engineer to join our Watch Desk team! Specifically, we are looking for two (2) Watch Desk Engineers to monitor and maintain mission systems around the clock.

The Work:

• Monitor system health, availability, performance, and data pipelines
• Investigate alerts and incidents and perform authorized recovery actions
• Escalate unresolved issues to the appropriate teams
• Maintain tickets, shift logs, SOPs, metrics, and reports
• Provide concise status updates and effective shift handoffs

Responsibilities:

• Develop and review systems engineering documentation, including System Engineering Plans, Initial Capabilities Documents, requirements specifications, and Interface Control Documents
• Elicit, derive, allocate, and manage system and derived requirements, with formal change control and traceability to source requirements
• Define, design, and control hardware and software interfaces, captured in a common interface format and shared repository
• Develop system architectures, design alternatives, and operational concepts using DoDAF and SOA; conduct trade studies and Analysis of Alternatives (AoA)
• Plan and coordinate system integration and verification activities across multiple teams
• Assess, mitigate, and monitor program risks, including through earned value management (EVM) data
• Manage configuration and the system baseline across the lifecycle; serve on the Configuration Control Board (CCB) and Integrated Product Teams
• Support DoD Certification & Accreditation, JCIDS documentation, and derived Information Assurance requirements
• Perform quantitative analysis of non-functional performance (reliability, maintainability, survivability, etc.) and use models, simulations, and prototyping to reduce risk
• Provide technical direction for development, integration, and testing; review WBS, work packages, and IMP; apply agency, national, and international standards

Qualifications:

• Twenty (20) years’ experience as a SE in programs and contracts of similar scope, type, and complexity
• Bachelor’s degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related discipline from an accredited college or university
  • Five (5) years of additional SE experience may be substituted for a bachelor’s degree

Required:

• Security+ certification (or ability to obtain within six months)
• Linux and command-line proficiency
• Hardware, software, network, and data-flow troubleshooting
• Clear communication and documentation skills
• Ability to follow and maintain SOPs, prioritize incidents, and work independently in a 24x7 environment
• Experience with Jira, Confluence, Rancher, Elasticsearch, Redis, NiFi, Docker, Kubernetes, AWS, and virtualization
• Experience with monitoring tools such as Nagios, Grafana, and Prometheus
• Demonstrated experience planning and leading Systems Engineering efforts
• Ability to work rotating 12-hour day or night shifts on a two-week schedule (Central time zone)