Senior Integration & Test Engineer - Production Systems

Castelion Corporation; Torrance (CA); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Stock incentives

Medical, vision, and dental insurance

Four weeks paid time off

Job summary

Castelion invites a Senior Integration & Test Engineer to lead the transition of advanced defense hardware from prototype into full production, driving integration, test, and qualification across mechanical and electrical subsystems.

You will establish scalable manufacturing and test processes, support flight tests, troubleshoot issues, and enable repeatable, production‑ready builds for complex, mission‑critical systems in a fast‑paced startup environment.

Qualifications

• Bachelor's degree in mechanical, aerospace, or manufacturing engineering.
• Minimum 5 years of professional experience within aerospace, defense, or a related high‑reliability manufacturing/production environment — particularly in integration, test, or manufacturing roles.
• Demonstrated history of taking hardware from R&D or prototype phase through to production.
• Proficiency in CAD/CAM software (NX preferred).
• Broad exposure to mechanical, structural/composite, electrical/avionics, and (optionally) propulsion or fluid/energetic systems — with ability to collaborate across disciplines.

Responsibilities

• Take full ownership of assembly, integration, and test processes for complete hypersonic strike vehicle assemblies — including solid rocket motors, structural/composite components, mechanical, electrical, and avionics subsystems.
• Become an expert in system‑level interactions and how the vehicle operates in the field.
• Partner closely with design, manufacturing, and quality engineering teams to guide new hardware from concept through prototype, qualification, and production‑ready status.
• Evaluate designs for manufacturability, testability, and producibility; feed manufacturability and test requirements back into design reviews.
• Develop, document, and qualify manufacturing, assembly, and test processes; create and maintain work instructions, test procedures, mBOMs, and quality/inspection standards.
• Design and build tooling, test stands, jigs, fixtures, and integration/test equipment as needed to support both development and production efforts.
• Lead hands‑on build and test operations, working side‑by‑side with technicians and specialists to assemble flight‑hardware, integrate subsystems, execute test campaigns (functional, static, environmental, acceptance), and perform go/no‑go judgments.
• Troubleshoot integration or test failures; rapidly lead root‑cause investigations and corrective‑action initiatives in partnership with quality and design teams.
• Drive continuous process improvement: iterate on assembly flows and test procedures based on lessons learned, and scale processes as production volume grows.
• Plan and manage capital‑equipment, facility layout, and production‑line upgrades to support increasing throughput, assembly complexity, and safety requirements.
• Mentor and lead other engineers and technicians; cultivate a culture of accountability, technical rigor, safety, and continuous learning across the integration & test organization.
• Work cross‑functionally with supply‑chain, vendors, fabricators, and subcontractors to ensure seamless, production‑ready delivery of components and subsystems.
• Operate comfortably in a fast‑paced, resource‑constrained startup environment, balancing technical excellence with aggressive schedule and business goals.

Skills

System integration

Test engineering

Manufacturing engineering

Root-cause analysis

Python

MATLAB

GD&T

Electronics harnessing

Project leadership

NX CAD/CAM

Education

Bachelor's degree in mechanical, aerospace, or manufacturing engineering

Tools

NX CAD/CAM

DAQ instrumentation

Job description

Castelion invites a Senior Integration & Test Engineer to lead the transition of advanced defense hardware from prototype into full production, driving integration, test, and qualification across mechanical and electrical subsystems.

You will establish scalable manufacturing and test processes, support flight tests, troubleshoot issues, and enable repeatable, production‑ready builds for complex, mission‑critical systems in a fast‑paced startup environment.