Overview Own Your Future. Modern Technology Solutions, Inc. (MTSI) is seeking a Weapons Systems Senior Engineer (GRP3) at Eglin AFB, FL. This position provides direct acquisition program systems and other engineering support as a key team member supporting USAF Weapons Systems Program Office (SPO) activities, specifically the program chief engineer, on Eglin AFB, FL. The successful candidate will interface and coordinate with multiple government leads and prime and other contractors within the