Software Systems Engineer

Software Systems Engineer 📍 Northridge, CA, US 💼 Full-time | On-site 💰 $95,000–$185,000, depending on experience and level A technology and engineering organisation supporting complex national security programmes is seeking a Software Systems Engineer to contribute to system design, integration, testing and validation.

This is a non-supervisory engineering role suited to someone with strong systems-level technical skills, excellent problem-solving ability and the ability to work independently while collaborating with engineering teams and stakeholders.

Key Responsibilities

• Lead critical aspects of system design, integration and validation.
• Test complex algorithms and graphical user interfaces, including requirements validation, usability testing and defect identification.
• Analyse system-level architecture and interfaces and troubleshoot across multiple subsystems.
• Support seamless integration and performance verification of complex systems.
• Work within Agile development environments and CI/CD pipelines.
• Document defects clearly and maintain issue traceability through resolution.
• Communicate technical errors, risks and recommendations to engineering teams and stakeholders.
• Interpret formal and informal requirements and develop detailed technical specifications.
• Manage requirements and change requests throughout the development lifecycle.
• Guide engineering teams and support alignment with programme objectives.
• Contribute to systems integration, testing and verification activities.
• Work independently, take ownership of assigned tasks and drive solutions with minimal oversight.

Required Qualifications

• Bachelor's degree or higher in Systems Engineering, Computer Engineering, Computer Science or a related technical field.
• Ability to obtain and maintain a Top Secret security clearance .
• Strong experience testing complex software, algorithms and GUIs.
• Understanding of system architecture, interfaces and subsystem integration.
• Experience with Agile development methodologies.
• Experience with continuous integration/continuous delivery tools such as Jenkins and Git.
• Strong technical documentation and defect reporting skills.
• Ability to interpret requirements, write specifications and manage changes.
• Strong communication and stakeholder management skills.
• Ability to work autonomously and manage complex technical challenges.

Preferred Qualifications

• Experience working with classified systems or secure environments.
• Familiarity with DevSecOps practices.
• Knowledge of Model-Based Systems Engineering (MBSE) tools and methodologies.
• Experience with Squish, Jenkins and Git.
• Basic C++ and/or Python experience.
• Experience with systems integration, testing and performance verification.
• Salary Compensation varies according to experience and engineering level: Engineer I: $95,000–$115,000 Engineer II: $115,000–$140,000 Staff Engineer: $135,000–$165,000 Senior Engineer: $155,000–$185,000 Final compensation will depend on experience, education, skills, responsibilities and other relevant factors.

Benefits

• Medical, dental and vision insurance Life and long-term disability insurance Fitness reimbursement Employer-funded 401(k) contribution Employer-funded employee stock ownership plan Continuing education assistance Flexible scheduling Paid time off Paid parental and bereavement leave Additional Requirements U.S. citizenship is required for position eligibility.
• Candidates must be able to obtain the required security clearance and successfully complete applicable background, government security and drug screening requirements.

Equal Opportunity

Employer: Qualified applicants will be considered without regard to protected characteristics in accordance with applicable law.