Job Description This position is participating in our External Referral Program. If you know somebody who may be a fit, click here to submit a referral. If your referral is hired, you'll receive a payment! code-extrefer Senior Linux System Administrator - Clearance Required WHAT WE'RE DOING Join Lockheed Martin Rotary and Mission Systems, where we foster innovation and integrity. As a Senior Linux System Administrator, you'll be empowered to create "new realities" and pioneer solutions that b