Software Systems Engineer

Must have a Top Secret or TS/SCI clearance
Systems Engineer II / III (MBSE & Software Systems Engineering)
Position Overview

We are seeking Systems Engineers II and III to support the development of complex, software-intensive defense and mission systems. This role is focused on Model-Based Systems Engineering (MBSE), requirements development and decomposition, system modeling, and software systems engineering throughout the product lifecycle. The selected candidate will work closely with software, integration, and test teams to develop system models, define architectures, and produce engineering artifacts that support mission-critical capabilities.
The ideal candidate is a hands-on engineer with experience using CAMEO and SysML to develop and maintain system models while supporting the delivery of software-based products. This position is best suited for individual contributors who actively perform technical systems engineering work and collaborate directly with development teams.
Essential Responsibilities

• Develop and maintain Model-Based Systems Engineering (MBSE) artifacts using CAMEO Systems Modeler.
• Create, update, and manage SysML diagrams, including use case, activity, sequence, block definition, internal block, state machine, and parametric diagrams.
• Analyze, decompose, allocate, and trace system requirements from customer and operational needs down to subsystem and software requirements.
• Support system architecture development and technical baseline management.
• Utilize Teamwork Cloud to collaborate across engineering teams and manage model repositories.
• Perform system analysis, trade studies, and performance assessments to support design decisions.
• Generate engineering documentation, technical specifications, interface definitions, and supporting artifacts.
• Collaborate with software engineering teams throughout the software development lifecycle.
• Support software integration, verification, validation, and test activities.
• Participate in technical reviews, design reviews, and engineering working groups.
• Support the development and delivery of software products within an Agile or iterative development environment.
• Contribute directly to engineering execution and technical deliverables.

Required Qualifications
Systems Engineer II

• Bachelor's degree in Systems Engineering, Computer Engineering, Software Engineering, Electrical Engineering, Aerospace Engineering, or a related STEM field.
• Approximately 5 or more years of systems engineering experience.
• Hands-on experience using CAMEO Systems Modeler.
• Strong understanding of SysML and associated diagram types.
• Experience performing requirements decomposition, allocation, and traceability.
• Experience utilizing Teamwork Cloud or similar model collaboration tools.
• Familiarity with software-based systems and software development processes.
• Strong analytical, problem-solving, and communication skills.

Systems Engineer III

• Bachelor's degree in Systems Engineering, Computer Engineering, Software Engineering, Electrical Engineering, Aerospace Engineering, or a related STEM field.
• Approximately 8 or more years of systems engineering experience.
• Advanced experience with CAMEO Systems Modeler and SysML.
• Demonstrated experience developing and maintaining large-scale MBSE models.
• Experience leading technical systems engineering efforts and mentoring junior engineers.
• Strong background in requirements engineering, system architecture development, and systems analysis.
• Experience supporting software-intensive systems throughout the development lifecycle.
• Experience utilizing Teamwork Cloud in collaborative engineering environments.

Required Technical Skills

• CAMEO Systems Modeler
• SysML modeling and diagram creation
• Teamwork Cloud
• Requirements decomposition and allocation
• Requirements traceability and verification
• Model-Based Systems Engineering (MBSE)
• Systems architecture development
• Technical documentation and engineering artifact generation

Preferred Experience

Candidates should possess experience in one or more of the following mission domains:

• Command and Control (C2) Systems
• Mission Data Processing Systems
• Mission Management Systems

Additional preferred qualifications include:

• Experience supporting Department of Defense programs.
• Experience working with software engineering and development teams.
• Software systems engineering experience.
• Experience supporting software integration and test activities.
• Experience contributing to the delivery of software products.
• Familiarity with Agile development methodologies.
• Experience supporting verification and validation efforts.

Day-to-Day Activities

• Building and maintaining system models.
• Creating and updating SysML diagrams in CAMEO.
• Decomposing and allocating system requirements.
• Producing engineering artifacts and technical documentation.
• Collaborating with software engineers to implement requirements.
• Supporting integration, testing, and verification activities.
• Participating in technical discussions and design reviews.
• Performing system analysis and evaluating design solutions.

Job Type & Location
This is a Contract to Hire position based out of Redondo Beach, CA.
Pay and Benefits
The pay range for this position is $50.00 - $90.00/hr.
Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: • Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a fully onsite position in Redondo Beach,CA.
Application Deadline
This position is anticipated to close on Oct 6, 2026.

About TEKsystems


We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.


The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services


We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.


The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.


San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.


Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.


Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.