Onsite Systems Engineer for Aerospace & Defense

Mosaic.tech; El Segundo (CA); On-site; USD 143,000 - 165,000; Full time

Job summary

Istari is seeking a Forward Deployed Engineer to be embedded with customer organizations, writing production-quality code and architecting integrations that connect CAD, CFD, FEM pipelines to Istari's platform. You’ll operate in defense/aerospace contexts, with active clearance being a strong plus and U.S.

citizenship required. You’ll work on-site with customers, delivering technical solutions, sharing design insights, and shaping the product through field feedback that informs roadmaps and

Qualifications

• Strong software engineering fundamentals with production‑quality code and defensible architectural decisions.
• Hands-on experience with digital engineering toolchains: CAD, CFD, FEM, or related environments.
• Comfort operating in ambiguous, fast-moving environments.
• Ability to work on-site with customers in a U.S. defense or aerospace context (clearance eligibility; active clearance a strong plus).
• U.S. citizenship is required.

Responsibilities

• Onsite Technical Delivery: embed with customer teams, architect and build integrations, act as primary technical interface.
• Software Development: develop, test, and maintain integrations and workflows; write maintainable code.
• Feedback Loop to Product: translate field experience into product insights and participate in reviews and roadmaps.

Skills

Software engineering fundamentals

Digital engineering toolchains

On-site with defense customers

US citizenship

Tools

CAD/CFD/FEM toolchains

Job description

Istari is seeking a Forward Deployed Engineer to be embedded with customer organizations, writing production-quality code and architecting integrations that connect CAD, CFD, FEM pipelines to Istari's platform. You’ll operate in defense/aerospace contexts, with active clearance being a strong plus and U.S.

citizenship required. You’ll work on-site with customers, delivering technical solutions, sharing design insights, and shaping the product through field feedback that informs roadmaps and