PCB Librarian

Castelion; Torrance (CA); On-site; USD 120,000 - 155,000; Full time

Job summary

Castelion in Torrance, CA, seeks a PCB Librarian to own management and quality of Castelion’s PCB component libraries for avionics hardware. You will ensure symbols, footprints, and metadata are accurate, compliant, and ready for integration into complex designs.

You will collaborate with layout, electrical, and manufacturing teams to enable rapid, reliable hardware development, enforcing IPC Class 3/3A standards and mentoring engineers.

Qualifications

• 5+ years in PCB design or electronics hardware development.
• Strong proficiency in Altium or equivalent.
• Experience managing component libraries (symbols, footprints, 3D models, metadata).
• Solid understanding of high-density, multi-layer PCB design practices.
• Familiarity with IPC Class 3/3A designs.
• Strong attention to detail, problem-solving, and ownership mindset.
• Ability to work effectively in cross-functional engineering teams.

Responsibilities

• Own creation, maintenance, and standardization of PCB libraries (symbols, footprints, 3D models, and metadata).
• Ensure libraries are accurate, manufacturable, and compliant with IPC Class 3/3A and Castelion internal standards.
• Collaborate with PCB layout and electrical engineers to translate schematic intent into reliable, reusable library components.
• Maintain and version‑control library data with proper documentation and traceability for production release.
• Interface with vendors to confirm part specifications, availability, and manufacturability.
• Review new component requests and validate footprints, 3D models, and pin assignments.
• Support high-density, multi-layer PCB designs through accurate component representation and layout constraints.
• Enable rapid iteration cycles by providing verified, production‑ready library components for design re‑spins.
• Mentor junior engineers on library best practices, IPC standards, and DFM considerations.
• Collaborate across electrical, mechanical, systems, and manufacturing teams to ensure library and design alignment.
• Contribute to continuous improvement of Castelion’s PCB library standards, processes, and tools.

Skills

PCB design

Schematic capture

Component libraries

DFM

Cross-functional teamwork

Attention to detail

Tools

Altium

ECAD tools

Job description

Why Castelion, Why Now

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we’re building a world-class team to turn bold ideas into real capability.

Why Castelion, Why Now

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we’re building a world-class team to turn bold ideas into real capability. This is a rare opportunity to join at an early stage, where you’ll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.

PCB Librarian

As a PCB Librarian, you will own the management, curation, and quality of Castelion’s PCB component libraries and associated design data. You will ensure that schematic symbols, footprints, and part metadata are accurate, compliant, and ready for integration into complex avionics systems. This role partners closely with PCB layout, electrical, and manufacturing teams to enable rapid, reliable, and high-quality hardware development across analog, digital, RF, and power domains.

You will be expected to drive standardization, enforce best practices, and maintain library integrity, enabling engineering teams to efficiently deliver flight-ready PCBs on aggressive schedules.

Responsibilities

• Own the creation, maintenance, and standardization of PCB component libraries (symbols, footprints, 3D models, and metadata) for avionics hardware.
• Ensure libraries are accurate, manufacturable, and compliant with IPC Class 3/3A and Castelion internal standards.
• Collaborate with PCB layout and electrical engineers to translate schematic intent into reliable, reusable library components.
• Maintain and version‑control library data, ensuring proper documentation and traceability for production release.
• Interface with vendors to confirm part specifications, availability, and manufacturability.
• Review new component requests and validate footprints, 3D models, and pin assignments.
• Support high-density, multi-layer PCB designs through accurate component representation and layout constraints.
• Enable rapid iteration cycles by providing verified, production‑ready library components for design re‑spins.
• Mentor junior engineers on library best practices, IPC standards, and DFM considerations.
• Collaborate across electrical, mechanical, systems, and manufacturing teams to ensure library and design alignment.
• Contribute to continuous improvement of Castelion’s PCB library standards, processes, and tools.

Basic Qualifications

• 5+ years of experience in PCB design, component management, or electronics hardware development.
• Strong proficiency in Altium (preferred) or equivalent professional PCB design tools.
• Experience managing component libraries, including symbols, footprints, 3D models, and metadata.
• Solid understanding of high-density, multi-layer PCB design practices.
• Familiarity with signal integrity, power distribution, grounding, EMI/EMC, and thermal considerations.
• Knowledge of PCB fabrication, assembly processes, materials, and manufacturing constraints.
• Experience supporting IPC Class 3 / 3A designs.
• Strong attention to detail, problem‑solving skills, and ownership mindset.
• Ability to work effectively in cross‑functional engineering teams and communicate across disciplines.

Preferred Skills And Experience

• Experience in aerospace, missile systems, spaceflight, defense, or other high‑reliability environments.
• Familiarity with boards containing microcontrollers, DSPs, FPGAs, ASICs, high‑speed interfaces, RF/mixed‑signal circuits, or power management.
• Experience supporting EMI/EMC mitigation through library and layout techniques.
• Knowledge of industry standards (e.g., MIL‑STD, DO‑254).
• Familiarity with signal and power integrity tools (e.g., SiWave, HFSS, ADS, CST).
• Experience supporting hardware through environmental testing and qualification.
• Ability to mentor engineers and elevate overall library and design quality.

Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

Additional Eligibility Requirements

This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply.

Affirmative Action/EEO Statement

Castelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.

Castelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact [e-mail]. Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law.

Castelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation.

EAR/ITAR Requirements

This position requires access to export‑controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export‑controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.