Uplink Engineer Jobs (NOW HIRING)

Celeris Systems is seeking a Systems Engineer III to join our Systems Engineering and Integration team supporting U.S. Space Force Space Systems Command programs in El Segundo, CA. This position will support classified analysis, model-based systems engineering, requirements verification, and technical assessments for space, ground, user, and RF receiver systems. The ideal candidate has a systems engineering background with strong analytical skills, experience working in classified DoD environments, and the ability to evaluate RF receiver performance, signal characteristics, signal-to-noise ratio, uplink/downlink concepts, threat-based environments, and jamming effects. The candidate should be comfortable working with engineering data, requirements, models, and mission/system performance information to support government decision-making. Key Responsibilities
• Support classified technical analysis for DoD space, ground, user, and RF receiver systems. • Analyze RF receiver performance, including power levels, signal-to-noise ratio, link performance, interference, and jamming effects. • Support mission, threat, and system performance assessments using engineering data, test results, models, and operational scenarios. • Use model-based systems engineering tools and digital engineering environments such as Cameo, SysML, KNIME, DOORS, DOORS Next, Jira, and iRIS to support system analysis and requirements traceability. • Develop, maintain, and analyze system models, requirements, verification data, and technical artifacts. • Support geospatial and positional analysis, including mapping system or asset positions, operational areas, coverage considerations, and scenario-based performance impacts. • Lead or support Modeling and Simulation Verification, Validation, and Accreditation activities for satellite simulators, control system simulators, RF receivers, and related mission systems. • Develop M&S VV&A plans, reports, and supporting documentation in alignment with applicable DoD guidance. • Support test planning and execution for end-to-end system performance, with emphasis on RF receiver behavior in threat-based or contested environments. • Perform data analysis, develop technical findings, prepare test reports, and verify system and receiver-level requirements. • Track test articles, manage deficiency reports, and support corrective action tracking. • Manage, update, and maintain requirements within DOORS, DOORS Next, iRIS, or similar requirements databases. • Support acquisition, integration, sustainment, and technical risk assessment activities for space, ground, and user segments. • Maintain program metrics including requirements burndown charts, verification status, risk items, and Test and Verification Events Matrix data. • Interface with government customers, program leadership, analysts, engineers, and technical stakeholders in classified and unclassified environments. Position Characteristics
• Demonstrates strong analytical judgment and the ability to assess complex technical data in support of classified mission and system analysis. • Understands RF signal characteristics, signal-in-space concepts, uplink/downlink performance, receiver sensitivity, signal-to-noise ratio, power levels, interference, and jamming effects. • Applies systems engineering and model-based systems engineering principles to evaluate requirements, architectures, interfaces, verification data, and system performance. • Works independently in a classified environment under general direction. • Develops solutions to complex engineering and analytical problems requiring evaluation of multiple technical, operational, and programmatic factors. • Communicates technical findings clearly to government customers, program leadership, engineers, and analysts. • Exercises sound judgment when interpreting incomplete data, identifying risks, and recommending mitigation approaches. Required Qualifications
• Bachelor’s degree in Engineering, Science, Mathematics, Physics, Data Analytics, Operations Research, or related technical field. • 5+ years of experience supporting DoD, space, satellite, RF, missile, sensor, intelligence, test, or mission analysis programs. • Active DoD Secret clearance required, with ability to support classified work in a closed-area environment. • Experience performing technical analysis, systems analysis, mission analysis, test analysis, or engineering analysis using system data, test data, models, or operational scenarios. • Working knowledge of RF systems, receivers, signal characteristics, signal-to-noise ratio, power levels, uplink/downlink concepts, interference, or jamming effects. • Experience with requirements management, verification, validation, or test planning. • Experience with MBSE, digital engineering, or requirements tools such as Cameo, SysML, DOORS, DOORS Next, Jira, iRIS, or similar platforms. • Ability to communicate technical findings through reports, briefings, analysis summaries, and customer-facing discussions. Preferred Qualifications
• Experience supporting Space Systems Command programs or other U.S. Space Force organizations. • Experience supporting classified analysis in a DoD, intelligence, space, missile, RF, sensor, or electronic warfare environment. • Experience with Cameo, SysML, KNIME, MATLAB, Python, STK, AFSIM, or other modeling, simulation, data analysis, or mission analysis tools. • Experience analyzing RF receiver performance, link budgets, jamming effects, contested environments, or threat-based scenarios. • Experience with geospatial, positional, coverage, or mission mapping tools. • Experience supporting M&S VV&A, test planning, verification events, or requirements selloff. • Experience with DOORS, DOORS Next, Jira, Confluence, iRIS, or similar digital engineering and program management tools. • Familiarity with DoD acquisition, systems engineering, and space system lifecycle processes. • Active Top Secret clearance or eligibility for upgrade. Compensation
The salary range for this position is $130,000 – $155,000 annually, depending on experience, qualifications, and clearance status. Benefits
• 401(k)
• Health Insurance
• Dental Insurance
• Vision Insurance
• Life Insurance
• Paid Time Off
• Flexible Schedule Location
El Segundo, CA
This position requires on-site support and the ability to maintain a DoD Secret security clearance. Equal Employment Opportunity Statement
Celeris Systems is an Equal Opportunity Employer. We are committed to creating an inclusive environment for all employees and applicants. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, gender expression, sexual orientation, national origin, ancestry, age, disability, medical condition, genetic information, marital status, military or veteran status, or any other protected status in accordance with applicable federal, state, and local laws.
If you require reasonable accommodation during the application or hiring process, please contact Celeris Systems Human Resources.