Senior Systems Engineer & SME - Space Systems

Arenatechnologies; El Segundo (CA); On-site; USD 180,000 - 225,000; Full time

Job summary

Systems Planning and Analysis, Inc. (SPA) is seeking a Senior/SME Systems Engineer for the Space and Intelligence Division, supporting USSF, SSC, NASA, and other space programs from El Segundo.

You will lead modeling, simulations, and MBSE activities to advance system architectures and performance analyses. Ideal candidates have 10+ years of systems engineering experience, strong communication skills, and proficiency with MATLAB, STK, Python, and SysML tools; active clearance is required for

Qualifications

• US Citizenship with active Secret or TS/SCI at time of application
• Bachelor’s degree in engineering or related field
• 10+ years of systems engineering experience
• Proficiency with modeling and simulation environments (e.g., MATLAB, STK, Python, SysML tools)
• Demonstrated ability to develop requirements, conduct analyses, and support system integration
• Strong communication and collaboration skills across engineering teams
• Ability to report to designated work location in El Segundo, up to full time, based on the needs of the customer
• About the Desired: INCOSE ASEP, CSEP, or equivalent engineering certifications
• Experience with digital engineering, MBSE, or enterprise modeling tools
• Experience in defense, space, or mission system environments
• Familiarity with acquisition engineering documentation and technical reviews
• Experience leading technical workstreams or trade studies

Responsibilities

• Creating and executing modeling, simulation, and analysis activities to evaluate system performance
• Developing system and subsystem requirements, interfaces, and technical specifications
• Conducting engineering trade studies to inform design decisions
• Supporting system architecture development and model-based systems engineering (MBSE) products
• Preparing detailed technical documentation, briefings, and analysis results
• Leading subsystem-level integration and coordinating across technical disciplines
• Supporting test planning, V&V, and performance evaluation using analytical and simulation tools
• Identifying technical risks, gaps, and dependencies in system designs
• Improving and maintaining engineering models, baselines, and processes
• Mentoring junior engineers on modeling and analysis tools

Skills

Systems engineering

Modeling & simulation

Requirements development

Technical communication

Cross-functional collaboration

Education

Bachelor’s degree in engineering or related field

Tools

MATLAB

STK

Python

SysML tools

Job description

Systems Planning and Analysis, Inc. (SPA) is seeking a Senior/SME Systems Engineer for the Space and Intelligence Division, supporting USSF, SSC, NASA, and other space programs from El Segundo.

You will lead modeling, simulations, and MBSE activities to advance system architectures and performance analyses. Ideal candidates have 10+ years of systems engineering experience, strong communication skills, and proficiency with MATLAB, STK, Python, and SysML tools; active clearance is required for