Senior Space Systems Engineer — Flexible Flight & Ground Software

Modern Technology Solutions Inc; El Segundo (CA); On-site; USD 165,000 - 205,000; Full time

Benefits offered by this job

401k match

Annual educational reimbursement

ESOP

Semi-annual bonus

Health insurance

Life and disability insurance

Optional health plan

Job summary

Modern Technology Solutions, Inc. (MTSI) is seeking a Software & Ground Systems Engineer to support next‑generation space systems from our California facility.

The role covers software lifecycle governance, FSS oversight, and ground segment integration, with emphasis on safety, reliability, and mission assurance. You will leverage 7+ years in ground systems and software engineering (C++, Python) plus leadership and ICD development to influence program lifecycle reviews, system test, and agile

Qualifications

• 7+ years of ground system architecture, integration, or implementation experience.
• 7+ years hands-on software engineering using C++, Python.
• 2+ years of leadership in program lifecycle reviews.
• 2+ years developing ICDs and operational integration procedures.
• Working knowledge of AFI 99-103, AFSPCI 99-103, or SSC-S-001.
• Experience with system-level testing and Agile software development workflows.
• Bachelor's degree in a STEM discipline.
• Active TS clearance required.

Responsibilities

• Monitor, identify, document, and report discrepancies in software acquisition planning and strategy.
• Conduct FCA/PCA, CRWGs, specification reviews, and contractor proposal reviews.
• Perform code, design, and data flow reviews, timing and memory margin analyses, and software capability assessments.
• Monitor spacecraft and payload FSW including PCA FSW for GEO/HEO orbits.
• Evaluate ground software subsystems including TT&C, Ground Control, and mission management.
• Analyze obsolescence and maintenance of flight/ground software code bases.
• Review test plans, procedures, and simulation analyses to verify functionality and interoperability.

Skills

Ground systems

C++/Python

Leadership

ICDs

Software standards

Agile development

Education

Bachelor's degree in STEM

Active TS clearance

Tools

Java

C#

C

JavaScript

React

Node.js

Job description

Modern Technology Solutions, Inc. (MTSI) is seeking a Software & Ground Systems Engineer to support next‑generation space systems from our California facility.

The role covers software lifecycle governance, FSS oversight, and ground segment integration, with emphasis on safety, reliability, and mission assurance. You will leverage 7+ years in ground systems and software engineering (C++, Python) plus leadership and ICD development to influence program lifecycle reviews, system test, and agile