Millennium Space Systems

Security Admin

Security - El Segundo, CA - Full Time

Millennium Space Systems is seeking a Security Admin to join our team of qualified, diverse individuals.

This position is in direct support of the Security Team. The ideal candidate will be team oriented and have the ability to work with others collaboratively in a professional and high-energy environment. You will possess the ability to adapt to constantly changing demands and demonstrate capability to take on new and unfamiliar tasks.


Responsibilities include, but are not limited to:

  • Reading documents for basic grammar, formatting, and data integrity,
  • Gathering, compiling, and reporting on information relevant to supervisor's assignments
  • Answering incoming calls and providing support as required
  • Checking and logging incoming/outgoing visiting guests and customers
  • Escorting guests in and out of the facility
  • Responding to general requests, organizing and maintaining files
  • Wrapping classified packages
  • Verifying clearances in multiple databases
  • Performing low to high data transfers
  • Maintaining metrics and general clerical duties for the Security Team



  • High School Diploma and 2 years additional education and/or experience
  • The ability to produce appropriate clear, concise and detailed documentation
  • Knowledge of Microsoft Office software (Word, PowerPoint, Outlook and Excel) and intranet/internet proficiency 
  • Proficiency at multi-tasking, time management, and managing priorities
  • Demonstrate ability to be a proactive, self-motivated, well organized, reliable, and detail oriented team member
  • Active TS/SCI Clearance 
  • 1 - 3 years of experience performing administrative or security related duties 
  • Excellent skills in customer service, verbal, and written communication
  • Proactive team player, who possesses excellent problem solving and organizational skills


Millennium Space Systems delivers affordable, high-performance space systems for exacting customers. At Millennium, you will be part of a close-knit team working on exciting technological problems. We work in an open environment where ideas are shared across all disciplines, and there are ample opportunities for advancement based on excellence. Superstars are welcome.

Applicants must be U.S. citizens eligible for security clearance.
We are proud to be an Affirmative Action/Equal Opportunity Employer.
We encourage veterans, disabled veterans and disabled individuals to apply for any open position for which they feel they are qualified.

Apply: Security Admin
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Cover Letter*
In 150 characters or fewer, tell us what makes you unique. Try to be creative and say something that will catch our eye!*
Are you a U.S. citizen?*
Do you have an active SCI, Secret or Top Secret clearance?*
Do you claim dual citizenship with a country other than the U.S.?*
Are any of your immediate family members citizens of a country other than the U.S. or claim dual citizenship?*
Do you, your spouse or cohabitant have any close or continuing contact with citizens of another country?*
Do you, your spouse, cohabitant, or dependent children have any foreign interests (such as stocks, property, investments, bank accounts, ownership of corporate entities or corporate interests/businesses)?*
Have you had any bills referred to a collection agency, had your wages garnished, have any tax liens against you or filed for bankruptcy?*
Have you ever had a security clearance or access denied, revoked or suspended?*
In the last seven (7) years, have you consulted with a health care professional regarding an emotional or mental health condition or were you hospitalized for such a condition? (Note: Answer “NO” if the counseling was for any of the following reasons and was not court-ordered: Strictly marital, family, grief not related to violence by you; or strictly related to adjustments from service in a military combat environment.*
In the past seven (7) years have any of the following happened to you:
a. Been issued a summons, citation, or ticket to appear in court in a criminal proceeding against you? (not including citations involved traffic infractions where the fine was less than $300 and did not include alcohol or drugs)
b. Been arrested by any police officer, sheriff, marshal or any other type of law enforcement official?
c. Been charged, convicted, or sentenced of a crime in any court? (Include all qualifying charges, convictions or sentences in any Federal, state, local, military, or non-U.S. court)
d. Have been or are you currently or probation or parole?
e. Are you currently on trial or awaiting a trial on criminal charges?
f. Been convicted in any court of the United States or a crime, sentenced to imprisonment for a term exceeding 1 year for that crime?
g. Been charged with a felony offense?
h. Been convicted of any offense involving domestic violence or a crime of violence against your child, dependent, cohabitant, spouse, former spouse, or someone with whom you share a child in common?*
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