Principal Manufacturing Engineer

Job Description

Job Description

About Castelion

Castelion is bringing a new approach to defense development and production : one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We design, build, and test next generation weapon systems to give America and its Allies a definitive edge in defense capabilities.

Principal Manufacturing Engineer

Castelion is seeking a principal manufacturing engineer to join our Radar development team. In this role, you will own the end-to-end transition from prototype to full-scale production. You will architect and implement manufacturing processes to achieve aggressive production cost, quality, and delivery targets.

Core Responsibilities :

Define & Scale Manufacturing Processes

Lead R&D-to-production transition by capturing existing (yet informal) production flows, formalizing them, and architecting scalable, high-throughput processes (e.g., tooling, layout, SOPs, PFMEA). Design a greenfield production site from scratch to produce radars at scale.

Production Test Equipment Selection and Implementation

Specify stations and necessary equipment for each production step-defining functional requirements, safety interlocks, interfaces, and use cases. Manage procurement and coordinate with hardware and software teams to ensure integration and deployment

Data Capture & Quality Control

Collaborate with design engineers and software teams to define what data to collect, set process control limits, and enable data capture, validation, storage, and visualization (e.g., dashboards, SPC tools)

Troubleshooting & Continuous Improvement

Provide technical support to resolve production issues, lead root-cause analysis, and drive continuous improvements in quality, cost, and throughput

Cross-Functional Collaboration & Documentation

Engage with R&D, design, test, operations, and suppliers to align manufacturing needs with design intent. Maintain up-to-date, accurate documentation for flow processes, test systems, and manufacturing specs

Mentorship & Influence

Act as the go-to expert for electronics production and test. Provide guidance to less experienced engineers and influence the company's overall approach to electronics production.

Basic Qualifications :

• Bachelor's degree in Mechanical, Electrical, Aerospace, Systems, or Manufacturing Engineering (or related field)
• 10+ years in manufacturing engineering and / or production, with significant experience in avionics, high-reliability electronics, or aerospace hardware development

Preferred Experience :

Leadership Qualities :

ITAR Requirements :

Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin / ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

All employees are granted long-term stock incentives as part of their employment at Castelion. All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.