Software Architect

Modern Technology Solutions, Inc. (MTSI) is seeking a Software Architect to join our team in El Segundo, CA or Colorado Springs, CO.

The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) effort provides leading edge Systems Engineering & Integration (SE&I) for the US Space Force's Space Systems Center (SSC). We support the Space Force's acquisition of state‑of‑the‑art satellite communications systems, providing global secure, survivable, and protected communications for our nation's warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems.

• Design and implement high‑quality software while maintaining architectural integrity across the stack.
• Lead architectural decision‑making, setting technical direction and balancing key tradeoffs.
• Own solutions end‑to‑end, from design through deployment and long‑term stewardship.
• Work autonomously, showing initiative and strong problem‑solving capability.
• Collaborate closely within a small, high‑impact team and contribute to shared delivery.
• Operate effectively in a fast‑moving environment with evolving requirements.
• Shape foundational architecture and establish best practices for long‑term success.
• Adopt and explore emerging AI‑assisted development tools to enhance delivery and quality.

• Location: On‑site
• Travel Requirements: Minimal
• Working Hours: Standard

• Ability to obtain and maintain a Secret clearance.
• Bachelor's degree in engineering, computer science, mathematics, or equivalent field.
• 5 years of applicable experience.
• Demonstrated experience designing and delivering large‑scale, production‑ready systems.
• Strong cloud and Kubernetes expertise, including ecosystem tooling and Infrastructure as Code (Terraform, Ansible, or similar).
• Familiarity with Git Ops, secure system design, supply‑chain security, and air‑gapped environments.
• Strong understanding of Dev Sec Ops  principles.
• Experience with messaging or event‑streaming platforms (e.g., Kafka).
• Broad technical capability, able to reason across the stack and make sound architectural tradeoffs.
• Experience with Go, Type Script, or Java; proficiency with Git workflows, code review, and CI/CD.
• Experience with AI‑assisted and agentic development tools, including safe integration practices.
• Effective technical communicator able to document and justify architectural decisions.
• Proficient in Microsoft Office products (Word, Excel, PowerPoint).

• Active Secret (or higher) clearance.
• Experience supporting government or Department of War (DoW) systems.
• Experience with MILSATCOM, such as AEHF, EPS, WGS, Protected Tactical SATCOM, and COMSATCOM.
• Experience with maintaining software requirements alongside systems engineers, and establishing requirements traceability to capabilities.
• Experience integrating Dev Sec Ops  principles into software architecture.
• Certifications such as INCOSE CSEP/ESEP.

The pay range for this position in California is $127,000/year to $159,000/year and for Colorado is $116,000/year to $145,000/year; however, base pay offered may vary depending on established government contract ranges, job‑related knowledge, skills, and experience, and other factors. MTSI also offers a full range of medical, financial, and other benefits, dependent on the position offered. Base pay information is based on market location.

Applicants should apply via MTSI's internal or external careers site.

• Starting PTO accrual of 20 days PTO/year + 10 holidays/year
• Flexible schedules
• 6% 401(k) match with immediate vesting up to $9k annually
• Semi‑annual bonus eligibility (July and December)
• Company‑funded Employee Stock Ownership Plan (ESOP) – a separate qualified retirement account
• Up to $10,000 in annual educational reimbursement
• Other company‑funded benefits, like life and disability insurance
• Optional zero‑deductible Blue Cross/Blue Shield health insurance plan

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.