Full-Time

Optical Systems Engineer

Mid-Career

Posted on 7/15/2025

Millennium Space Systems

Millennium Space Systems

501-1,000 employees

Delivers national-security space missions and constellations

Compensation Overview

$104.5k - $186.3k/yr

El Segundo, CA, USA

In Person

US Citizenship, US Top Secret Clearance, Canada Citizenship, UK Citizenship, UK Top Secret Clearance Required

Category
Electrical Engineering (1)
Requirements
  • Bachelor's Degree in engineering or the physical sciences / computer science
  • 7+ years industry experience in optical engineering
  • Experience with space-to-space and/or space-to-ground laser communication
  • Experience with performance/phenomenology/modeling of space-based optical-electro-optical sensors
  • Ability to train and mentor other members of the team
  • This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. An interim and/or final U.S. Top Secret Clearance Post-Start is required.
  • U.S. Citizenship is required to obtain clearance
Responsibilities
  • Develop and validate mission and unit level requirements for optical communications terminals, electro-optical sensors, and space vehicle interfaces
  • Design and implement modeling and simulation of optical systems
  • Develop and execute unit and system level tests on the ground and on-orbit to verify performance
  • Manage supplier and partner performance
  • Manage complex projects by coordinating work statements, setting and tracking budget/schedule, and measuring technical performance
  • Support large-scale new business proposals
Desired Qualifications
  • 10+ industry experience working with satellite optical instrumentation, design, and/or operation
  • On-orbit experience in the operation and performance validation of optical communications terminals
  • Ability to develop and maintain an optical communications terminal link budget
  • Experience with design, integration, qualification, and test of satellite optical hardware such as electro-optical/infrared payloads, star trackers, laser range finders
  • Experience with onboard and ground processing of optical data to extract mission-related information
  • Active Top Secret/Sensitive Compartmented Information clearance
Millennium Space Systems

Millennium Space Systems

View

Millennium Space Systems provides space systems for national security, delivering missile-warning and other space missions by rapidly creating affordable prototypes and satellite constellations across different orbits. Its products are designed to work correctly the first time, with an emphasis on speed to meet customer needs. The company differentiates itself by offering fast, cost-effective prototype-and-constellation solutions rather than long, expensive development cycles, focusing on reliable performance for critical space missions. The goal is to enable secure, rapid, and dependable space capabilities for national security customers.

Company Size

501-1,000

Company Stage

N/A

Total Funding

N/A

Headquarters

El Segundo, California

Founded

2001

Simplify Jobs

Simplify's Take

What believers are saying

  • Targeting 26 satellite deliveries in 2026, up from 4 in 2025 via El Segundo investments.
  • Tony Gingiss appointed CEO December 9, 2024, drives Boeing-Millennium integration.
  • Delivered TRACERS satellites to Vandenberg June 16, 2025 for NASA mission.

What critics are saying

  • Production fails 550% ramp to 26 satellites in 2026, slips schedules 6-12 months.
  • Resolute design delays past 2026 bid-ready, loses to Relativity Space.
  • FOO Fighter fails 2027-2028 testing, Space Development Agency terminates $414M contract.

What makes Millennium Space Systems unique

  • Resolute platform fills 2-4 kW gap between Millennium small sats and Boeing large sats.
  • FOO Fighter delivers fire-control sensing for hypersonic missile tracking in LEO.
  • Secured spot on Space Force’s $1.84B RG-XX Andromeda contract for GEO reconnaissance.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Professional Development Budget

401(k) Company Match

Remote Work Options

Paid Vacation

Paid Sick Leave

Paid Holidays

Hybrid Work Options

Mental Health Support

Wellness Program

Company News

PR Newswire
Jun 16th, 2025
Millennium Space Systems Delivers Pair Of Space Vehicles To Launch Site For Nasa'S Tracers Mission

EL SEGUNDO, Calif., June 16, 2025 /PRNewswire/ -- Millennium Space Systems, a Boeing Company, delivered two space vehicles for NASA's Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission to Vandenberg Space Force Base Friday, marking a key milestone in preparation for launch later this year

Envision
Apr 9th, 2025
Boeing's bet: supercharge satellite production

When Envision Employment Services Incorporated acquired Millennium in 2018, it built prototypes and delivered one or two satellites a year.

Stock Titan
Dec 16th, 2024
Millennium Space Systems Names Tony Gingiss as CEO

Millennium Space Systems, a Boeing Company [NYSE: BA], has appointed Tony Gingiss as its new CEO effective December 9, 2024.

Military News
Oct 28th, 2024
U.S. Enhances Early Warning System with New Satellite Batch for Epoch Program

Millennium Space Systems signed the initial contract to deliver the first six satellites for MTC Epoch 1 in 2023.

SpaceNews
Aug 29th, 2024
Firefly names space industry veteran Jason Kim as new CEO

Kim joins Firefly from Millennium Space, a Boeing subsidiary specializing in small satellites primarily for U.S. government agencies, where he served as CEO.

INACTIVE