Full-Time

Senior Cost Estimating Specialist

Posted on 7/15/2025

Millennium Space Systems

Millennium Space Systems

501-1,000 employees

Delivers national-security space missions and constellations

Compensation Overview

$113.9k - $167.5k/yr

El Segundo, CA, USA

In Person

US Citizenship, US Top Secret Clearance Required

Category
Accounting (1)
Required Skills
Excel/Numbers/Sheets
Requirements
  • Bachelor’s degree or higher in an Engineering or Business domain
  • 5+ years of experience leading major cost estimating efforts for a Government customer.
  • Strong communications and analytical skills necessary to articulate pricing strategy to senior business and finance leaders
  • Experience reviewing proposal request for proposal documentation including, but not limited to, Technical Requirements Documents, Statement of Works, solicitation instructions, CDRL and GFX lists, etc.
  • Experience generating work breakdown structures, cost estimates and associated cost volumes
  • Experience working with technical and other functional teams to develop accurate and reliable cost estimates
  • Experience preparing and analyzing detailed cost summaries, learnings curves, cash flows, liability profiles and other price summaries required for corporate approval packages
  • Familiarity with FAR, DFARS, CAS, and TINA
  • Advanced proficiency with Microsoft Office, specifically Microsoft Excel
  • Must be able to obtain and maintain a TS/SCI security clearance.
Responsibilities
  • Lead the cost estimating effort in preparing detailed and accurate cost estimates for government (Department of Defense, NASA, and other federal agencies) projects.
  • Analyze Requests for Proposals (RFPs), Statement of Works (SOWs), Technical Requirements Documents (TRDs), and other proposal documentation to develop cost estimates that align with customer requirements.
  • Generate submission ready cost proposal articles, including cost volumes, rate justifications, bill of materials, basis of estimates, supplier consent packages, etc.
  • Work closely with program management, engineering, finance, and contracts to ensure alignment between the engineering solutions and cost estimates.
  • Ensure compliance with Federal Acquisition Regulations (FAR), Defense Federal Acquisition Regulation Supplement (DFARS), Cost Accounting Standards (CAS), Truth in Negotiations Act (TINA), and other government regulations, as necessary.
  • Assists with program baselining and execution efforts.
  • Track and analyze cost estimate verses actual costs to recommend mitigation strategies to resolve the deltas and identify opportunities to inform future proposal efforts.
  • Conduct risk analysis, what-ifs, and cost realism assessments to ensure pricing accuracy and executability.
  • Generate detailed cash flow projections.
  • Present cost estimates and pricing strategies to executive leadership and participate in customer negotiations and other cost discussions.
  • Continually assess and improve the estimating processes and tools used by the team to maintain efficiency and accuracy.
  • Support audit reviews by government agencies, including DCMA and DCAA, ensuring transparency and adherence to cost estimating policies and procedures.
Desired Qualifications
  • 8+ years of experience leading major cost estimating efforts for a Government customer
  • Master’s Degree in an Engineering or Business domain
  • Experience generating basis of estimates and bill of materials prior to engineering and functional inputs
  • Experience reviewing and generating proposal Integrated Master Schedules, DCMA 14 point checks, and/or Schedule Risk Assessments.
  • Experience with risk analysis, specifically the cost and schedule quantification of risks
  • High level understanding of the design, development, and/or operations of space vehicles
  • Experience with DoD and/or Intelligence Community proposals
  • Experience with ProPricer or other relevant pricing software
Millennium Space Systems

Millennium Space Systems

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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.

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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.

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