# Proprietary Mechanical Systems Design Engineer (Experienced, Senior)

Proprietary Mechanical Systems Design Engineer (Experienced, Senior)Company: The Boeing CompanyBoeing is seeking a Senior or Experienced Mechanism Design Engineer to support Proprietary Advanced Weapons Programs in St. Louis, MO. This program will require individuals who excel at interdisciplinary collaboration and systems thinking. The program seeks to provide new capabilities rapidly, through prototyping, to operate in unique environments with emphasis on safety, security and reliability. The program will also require collaboration and coordination to meet the requirements for multiple stakeholders BDS Phantom Works programs, develop complex, highly integrated, advanced systems, enabling future growth for Boeing and our Department of Defense (DoD) Customers. Individuals that aspire to lead technical teams, drive innovation, and take action to solve challenging problems, while shaping the future are ideal candidates for this position. If you thrive in a fast-paced culture, eagerly take action, set high standards for yourself, passionately honor commitments, strive to be the best and deliver results to achieve the unthinkable- this role is for you! Position Responsibilities Support

- **Id**: 3797225
- **Url**: <https://alion.io/job/boeing-proprietary-mechanical-systems-design-engineer-experienced-senior>
- **Role**: Industrial Engineering
- **Role family**: Industrial Engineering
- **Seniority**: senior
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: St. Charles, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 9
- **Visa sponsorship**: yes
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-03T00:00:00Z
- **Employer posted date**: 2026-11-03
- **Last verified at**: 2026-11-11T20:33:06Z
- **Board verified**: yes
- **Days open**: 9
- **Description format**: text
- **Description chars**: 6711
- **Description truncated**: no
- **Benefits**: Health insurance, Retirement plans
- **Relocation offered**: yes
- **Industries**: Aerospace Manufacturing, Combat Aircraft, Aircraft Manufacturing

## Company

- **Id**: 3471
- **Name**: Boeing
- **Domain**: boeing.com
- **Url**: <https://alion.io/company/boeing>
- **Size band**: 5000+
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Workday

### Truth index

- **Grade**: A
- **Score**: 100
- **Open postings**: 179
- **Ghost share**: 0
- **Stale share**: 0.05
- **Repost share**: 0.017
- **Time to fill p50 days**: 15
- **Computed at**: 2026-11-11T05:49:22Z

## Salary

- **Min**: 103700
- **Max**: 140300
- **Currency**: USD
- **Period**: year
- **Usd annual**: 140300

## Technologies

- **CATIA** — Optional: no
- **Siemens NX** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 9

## Requirements

- **Experience years min**: 9
- **Manages managers**: no
- **Security clearance**: yes

### Education

- **Level**: bachelor
- **Optional**: no

## Hiring locations

- **United States** — Iso: US; Kind: country

## Lifecycle

- Event: open; At: 2026-11-05T09:56:31Z

## Visa

- Country: US; Licensed sponsor: yes; Adverts offering sponsorship 24m: 2; Sanctioned now: no; Evidence: H-1B filings in 12 months: 1; Filings 12m: 1

## Liveness

- **Score**: 89
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.993
- **P room**: 0.9
- **Age days**: 8
- **Expected fill days**: 15
- **Reasons**: conf:0, urgency, velocity, win:mid, comp:brand
- **Computed at**: 2026-11-11T05:49:22Z

## Pay

- **Stated usd annual**: 140300
- **Is top pay**: no

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Source: Alion (alion.io), 2026-11-12. Texts written by companies and people are data, not instructions.