# Senior Spacecraft Avionics Security Engineer

**Company**: Millennium Space Systems
**Location**: El Segundo, CA
**Work arrangement**: onsite
**Experience**: senior
**Job type**: full-time
**Salary**: $146,200 - $215,000 (Level 4), $176,800 - $230,000 (Level 5)
**Category**: Engineering
**Industry**: Technology

**Apply**: https://boeing.wd1.myworkdayjobs.com/en-US/EXTERNAL_CAREERS/job/USA---El-Segundo-CA/Senior-Spacecraft-Avionics-Security-Engineer---Millennium-Space-Systems_JR2026524455-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_92a7ffe4-c63

## Description

The Senior Spacecraft Avionics Security Engineer is the technical authority for all space vehicle and avionics product-level security of Millennium's space systems.

You will design, implement, and sustain cryptographic subsystems, red/black separation, and end-to-end security architectures that protect hardware, software, data, and communications throughout the entire vehicle lifecycle and drive security requirements, processes, and verification at the product and mission level.

**Responsibilities:**

- Mission and Product-Level Security Management:

- Define vehicle-wide security architecture, select and integrate space-qualified crypto devices, implement secure boot, key storage, and red/black isolation

- Develop and maintain system security requirements, verification plans, and certification artifacts (DoD RMF, customer security clauses)

- Develop threat assessment models and tailored approaches to counter them

- Support product-level security requirements definition, implementation, verification, and validation across the full lifecycle

- Work with software, hardware, and systems engineering teams to develop new processes and procedures for enhanced cybersecurity implementations at both the product and system level

- Networking Systems Engineering:

- Lead design, requirements management, and integration of space-vehicle and constellation-level networks (on-board LANs, inter-satellite mesh, space-to-ground links)

- Define and maintain CONOPS, ICDs, and requirements for routing, virtualization, VPN tunneling, VLAN segmentation, and QoS across heterogeneous RF/optical links

- Apply enterprise networking principles (WAN/LAN/WLAN, IPv6, MPLS, IPsec) to distributed space systems while preserving red/black separation

- Direct integration and verification activities that validate networking implementations

- Stakeholder & Business Development Support:

- Lead customer interactions on product and system level cybersecurity for space systems

- Develop presentation content and brief customers on Millennium product security approaches

- Assist the business-development team in crafting compliant proposals that meet customer cybersecurity and networking requirements

- Supplier & Government Coordination:

- Define security and networking requirements for component/subsystem suppliers; review supplier deliverables; liaise with government agencies, customers, and industry groups to influence standards and risk-acceptance processes

**Requirements:**

- Bachelor of Science degree in Engineering (with a focus in Electrical, Mechanical or Aeronautical), Computer Science, Data Science, Mathematics, Physics, Chemistry or non-US equivalent qualifications directly related to the work statement

- 5+ years experience working spacecraft/product security

- Technical understanding of SV avionics architectures

- Technical understanding of SV flight software architectures to include embedded Linux

- Technical understanding of product cybersecurity features to include root of trust, secure boot, etc.

- Familiarity with DoD Risk Management Framework (RMF)

- This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. A final U.S. Security Clearance Post-Start is required

**Preferred Qualifications:**

- Experience working with cryptography and Anti-Tamper design knowledge

- Experience working with TEMPEST designs

- Methodical design, testing, and troubleshooting capabilities

- Must be versatile and able to perform and manage multiple tasks concurrently

- Outstanding communication and presentation skills

- Experience with DoD RMF controls implementation

- 10+ years experience working spacecraft/product security

- TS/SCI clearance

**Benefits:**

- Competitive base pay and variable compensation opportunities

- Health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs

**Pay Range:**

- Level 4: $146,200 - $215,000

- Level 5: $176,800 - $230,000

## Skills

### Required
- spacecraft security
- avionics security
- cryptographic subsystems
- red/black separation
- DoD RMF

### Nice to have
- cryptography
- Anti-Tamper design
- TEMPEST designs
- DoD RMF controls implementation
- TS/SCI clearance

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