Jacob Sierra

Experience

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  U.S. Marine Corps Reserve

  Mar 2003 - Mar 2009

  Meteorological and Oceanographic Observer

  Supervised the Safety, Training, and Supply NCOsDocumented the training and counseling of all troopsRecorded, coded, decoded, and disseminated meteorological and similar data Performed operator maintenance on multiple pieces of meteorological equipmentPerformed duties as Quality Assurance NCO for Meteorological Observations aboard Al Qaim, and Al Asad, Iraq

• 

  CoreCivic

  Jun 2006 - Jun 2009

  Correctional Officer

  Maintained the safety and security of staff, inmates, the public and the institution Disturbance Control Team Assistant Squad Leader- immediate response required in the event of a riot or disturbance Supervised subordinate team members and led officers during multiple large-scale disturbancesWorked all posts including Control Center officer, Special Housing Unit officer and Compound officer

• 

  Federal Bureau of Prisons

  Jun 2009 - Jul 2015

  Correctional Officer

  Maintained the safety and security of the institution through adherence to policy and procedureSupervised inmate work crews in multiple areasMaintained and coordinated timekeeping and payroll documents for work crewsConducted frequent checks for fire hazards, unsanitary conditions as well as searches for contraband

• 

  United States Army Reserve

  Oct 2009 - Oct 2015

  Civil Affairs Team Sergeant

  Airborne qualified and maintained jump statusCoordinated, planned, supervised as well as documented the execution of Civil Affairs operations Supervised a team in high stress environments to legitimize government, increase stability and relieve human suffering Gathered and analyzed information to identify and remedy sources of instability Coordinated and conducted meetings with key leaders, planned projects and performed pay agent duties Communicated effectively both orally and in writing through several large databases Show less

• 

  Rio Tinto

  Jul 2015 - now

  Provide technical expertise on waste to assist the business in making appropriate decisions to limit environmental impacts and maintain license to operateAnalyze and interpret waste data and write regulatory as well as internal technical reportsLiaise with regulators as appropriate on waste permittingProvide advice as required on waste requirements for new projects, as well as for ongoing operationsAssist with other environmental department disciplinesProvide support as a designated manager for contractor operations Show less

  • Environmental Specialist

    Mar 2023 - now

  • Production Supervisor

    Sept 2019 - Mar 2023

  • Emergency Response Team Member

    Aug 2017 - Sept 2019

  • Chief Operator

    Apr 2017 - Sept 2019

  • Production Operator

    Jan 2016 - Apr 2017

  • Laborer

    Jul 2015 - Jan 2016