Senior Systems Engineer – Systems Integration & Test (SEIT)

Four Sea Group, Inc.; South Dakota; On-site; USD 140,000 - 186,000; Full time

Benefits offered by this job

ESOP ownership

Competitive compensation

Retirement plan

PTO and flexible time-off

Health insurance

Dental

Vision

Life insurance

Disability insurance

Medical stipend

Job summary

Four Sea Group is seeking a Senior Systems Engineer specializing in systems integration and test to support the development, integration, verification, and validation of complex mission systems. You will translate customer requirements into reliable fielded capabilities by connecting systems-engineering analysis with hands-on integration and verification.

The ideal candidate has practical systems-engineering judgment with strong integration and test experience, and can collaborate across

Qualifications

• Bachelor’s degree in Engineering, Systems Engineering, Computer Science, Aerospace Engineering, or another relevant technical field, or equivalent practical experience.
• Approximately three years with a bachelor’s degree, one year with a master’s degree, or equivalent experience for degree alternatives.
• Active DoD TS/SCI security clearance at the time of application.
• Experience supporting system integration, verification, validation, or system-level test activities.
• Experience translating customer or product requirements into hardware and software system solutions.
• Experience developing test plans, procedures, checkout procedures, and technical reports.
• Experience with requirements analysis, allocation, interface definition, or similar systems-engineering activities.
• Understanding of system/product lifecycle concepts and established engineering practices.
• Experience with Linux and Windows.
• Experience installing or supporting software using Docker.
• Experience collecting and evaluating test data.
• Experience troubleshooting anomalous behavior involving hardware and software.
• Experience with Jira, Confluence, or comparable tools.
• Working proficiency with MS Office tools including Excel, Word, PowerPoint, and Project.
• Ability to coordinate across hardware, software, and test teams.
• Ability and willingness to travel internationally for ~7–14 days at a time, up to ~20% annually.
• Strong written and verbal communication skills.

Responsibilities

• Support defined system-level integration and test activities.
• Evaluate hardware and software interactions across subsystems.
• Develop and execute test approaches and procedures.
• Troubleshoot anomalous behavior and document results.
• Coordinate across hardware, software, and test teams to ensure readiness and program delivery.
• Contribute to lifecycle considerations and engineering best practices.

Skills

Systems engineering

Test & verification

Cross-team collaboration

Communication skills

Education

Bachelor’s degree or equivalent

Tools

Docker

Kubernetes

Jira

Confluence

Microsoft Office (Project)

Job description

About the role

Four Sea Group is seeking a Senior Systems Engineer specializing in systems integration and test to support the development, integration, verification, and validation of complex mission systems.

This role contributes to Four Sea Group’s ability to translate customer requirements into reliable fielded capabilities by connecting systems-engineering analysis with hands‑on integration and verification. The engineer will independently support defined system-level efforts, evaluate hardware and software interactions, develop and execute test approaches, troubleshoot anomalous behavior, and help ensure technical solutions account for mission, schedule, cost, and lifecycle considerations.

The ideal candidate brings practical systems-engineering judgment combined with strong integration and test experience. This role requires the ability to understand how requirements flow into hardware and software solutions, evaluate system interfaces and tradeoffs, and collaborate across engineering disciplines to improve technical readiness and successful program delivery.

Required Qualifications

• Bachelor’s degree in Engineering, Systems Engineering, Computer Science, Aerospace Engineering, or another relevant technical field, or equivalent practical experience.
• Relevant systems engineering, integration, test, verification, or mission-focused engineering experience; the customer requirement allows approximately three years with a bachelor’s degree, one year with a master’s degree, or equivalent additional experience in lieu of a degree.
• Active DoD TS/SCI security clearance at the time of application.
• Experience supporting system integration, verification, validation, or system-level test activities.
• Experience translating customer or product requirements into hardware and software system solutions.
• Experience developing test plans, test procedures, checkout procedures, and technical reports.
• Experience with requirements analysis, allocation, interface definition, or comparable systems-engineering activities.
• Understanding of system/product lifecycle concepts and established engineering practices.
• Experience working with both Linux- and Windows-based systems.
• Experience installing or supporting software using Docker.
• Experience collecting and evaluating test or instrumentation data.
• Experience troubleshooting anomalous behavior involving both hardware and software.
• Experience with Jira, Confluence, or comparable engineering collaboration and issue-tracking tools.
• Working proficiency with standard Microsoft Office tools, including Excel, Word, PowerPoint, and Project.
• Ability to independently support a defined systems integration and test scope and coordinate effectively across hardware, software, and test teams.
• Ability and willingness to travel internationally for approximately 7–14 days at a time, up to approximately 20% annually.
• Strong written and verbal communication skills.

Preferred Qualifications

• Experience performing functional analysis, timeline analysis, detailed trade studies, or system-effectiveness assessments.
• Experience integrating and testing ground‑station systems.
• Knowledge of antenna systems, RF concepts, or related communications‑system technologies.
• Experience installing and supporting applications using Kubernetes.
• Experience in space, satellite ground, defense, intelligence, or other mission‑critical environments.
• Experience with MBSE concepts, models, or system artifacts.
• Experience supporting broader verification and validation activities throughout the engineering lifecycle.

Salary

The salary range for this role is $140,000.00-$186,000.00 per year. The salary range provided is a good faith estimate representative of all experience levels. Four Sea Group, Inc. considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, key skills, and market conditions.

Application Deadline

This position is expected to remain open through October 31, 2026. The company may adjust this deadline based on business needs and will update the posting as appropriate.

Benefits

• FSG is 100% ESOP-owned, which means our employees share directly in the company’s growth.
• competitive compensation
• a strong employer-funded retirement plan
• generous PTO and flexible time‑off options
• comprehensive health
• dental
• vision
• life
• short‑term disability
• long‑term disability benefits
• a generous medical stipend that gives employees more choice and flexibility

EEO Statement

Four Sea Group is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, sex, sexual orientation, gender identity or expression, religion, national origin, marital or familial status, age, disability, veteran status, militaryserviceor application for military service.