MarkJessing.com     

    316-644-8549 cell   mark@jessing.com

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Contract RF Engineer performing ARSTRAT certification testing on portable satcom systems operating on C band, X band, Ku band and Ka band.  Qualification testing in the SIL included phase noise, spectral regrowth, harmonics, broadband thermal noise, maximum linear power, spurious emissions, carrier frequency accuracy, EIRP stability, transmit carrier level control and PIM testing.  Determined root cause of test failures and performed acceptance testing on new vendor equipment.

DataPath – Duluth, GA

June 2017 - Aug 2018

Hardware Engineer selecting hardware used in Deployable X, Ku, and Ka Earth Terminal SatCom systems.  Responsible to design cables for interfaces between monitoring, control, safety, transmitter and receiver redundancy, modem, and power systems used in the design.  Confirmed that waveguides, mounting hardware, enclosure designs, electrical layout, and equipment mounting arrangements met operational requirements.  Provided documentation under configuration management, inspected equipment received, and performed inspections and operational tests on equipment received from vendors. 

Harris – Melbourne, FL

August 2016 - June 2017

Contract Test Engineer responsible to oversee tests on VoIP (Voice over IP) system.  Worked directly with FAA customer to develop procedures that conformed to contractual agreements.  Documented and tracked system defects and demonstrated system functionality after their resolution.  Tests included configuration of VoIP options and backward compatibility with existing analog voice trunks.   

Rockwell Collins – Cedar Rapids, IA   
May 2015 - Dec 2015

gogo – Chicago, IL  
Sep 2013 - May 2015

Contract Engineer responsible to insure that internet products installed on commercial aircraft performed as designed. Wrote troubleshooting documents, revised operational acceptance test procedures, conducted radio interference tests during flight on aircraft, and revised existing process documents. Special studies included performance & reliability qualities of UHF antennas used to increase the system data rates. Also participated in the engineering roll out of the first commercial aircraft to have Ku satcom internet service.

Rockwell Collins – Cedar Rapids, IA   
April 2013 - July 2013

Contract – Design Quality Engineer responsible to insure that products met both Rockwell and FAA quality standards.  Oversaw software (DO-178B) and hardware (DO-160G) testing and approved the final reports.  Inspected avionics software testing plans and verified that issues were properly documented & resolved.   Investigated product failures that resulted in a warranty repair and approved engineering change orders and other corrective action documentation. 

Fusion System

Sierra Nevada Corp – Denver, CO   

January 2013 – March 2013

Contract - Systems Engineer working on classified military modifications of C4ISR aircraft.  Unclassified work included the use of AutoCad LT 2012 to draft electrical drawings of mission equipment.  Work also included specifications of hardware changes (such as cable types) to minimize aircraft weight, as well as documenting installation of equipment.  Contract was terminated early due to sequestration budget cuts.

C4ISR

Lockheed/Sikorsky Helicopter – West Palm Beach, FL & Coatesville, PA   

October 2011 – January 2013

Contract - Requirements Verification Engineer working on the S76D helicopter display upgrade project. Confirmed that new display system compliance testing met DO-254 and FAR part 29 requirements and also tracked system failures.  Responsibilities included diagnosis of failures as well as system performance documentation of all display functions and interfaced systems, including Thales flight management system, Honeywell Terrain Avoidance Warning System (TAWS), Rockwell com/nav radio systems, AHRS, radar altimeter and other navigational equipment.

S76D Helicopter

Rockwell Collins – Cedar Rapids, IA   
April 2010 - September 2011

Contract - Sr. Engineer assigned to Gulfstream G280 avionics certification testing. Served as a mentor to the new hire employees and trained them how to use DOORS to write verification tests under configuration control. Also replicated and resolve issues that customers have regarding the performance of new software loads in the G280 test aircraft. Performed as a customer liaison when the Israel Civil Aviation Authorities visited our Iowa based system integration laboratory.

Fusion System

Lockheed Martin – San Diego, CA

March 2009 – April 2010

Manager for the Systems Integration Lab (SIL) project for the Joint Tactical Radio System (JTRS) development at Lockheed Martin, San Diego. Functioned as the liaison between engineering and the Department of Defense Security Service to certify the SIL and accredit the equipment installed for their COMSEC operations. Other responsibilities included the build site selection, establishment of contract timelines and milestones, formulation of capital budgets, approval of laboratory construction drawings, draft safety and other lab procedure documents, as well as represent the engineering laboratory during senior leadership review boards.

Boeing Integrated Defense Systems– Long Beach, CA

C-130 Deploying Flares

Rockwell Collins – Cedar Rapids, IA   
July 2007 - April 2008

Contract - RF Engineer assigned to avionics integration group to resolve complex data communications problems.  Work included configuration of radios and data interface units navigation, and avionics computer equipment in the SIL, with the associated test equipment, to replicate and resolve issues that customers have regarding the performance of Rockwell equipment on their jets.  Approved engineering change orders to existing designs.  Reviewed requirements and operational description documents. 

Proline 21 System

Raytheon Aircraft / Hawker Beechcraft – Wichita, KS   

Beechcraft

Boeing Integrated Defense Systems– Wichita, KS

October  2002 – June 2006

KC-767 Advanced Tanker

Cingular/AT&T, Sprint Nextel, US Cellular, T-Mobile, Bellsouth

Nov 1994 – May 2002

Worked as a contracted Radio Engineering leader on client locations nationwide.  RF Systems Engineering responsibilities included system design & installation supervision as well as overseeing the system programming and frequency planning of digital cellular systems.  Trained personnel in testing procedures and quality control measurements.  Also inspected and upgraded analog, CDMA and GSM cellular systems, prepared engineering change orders, and briefed the management team on engineering progress. 

Hidden Cell Sites

Healthdyne/Respironics  -  Marietta, GA 
May 1992 – November 1994

Employed as an EMI/EMC Test Engineer for sleep apnea product manufacturer.  Verified that engineering changes for cardiac and respiratory data acquisition systems conformed to the requirements of the FDA.  Specified new test equipment to be purchased and wrote test procedures to be followed for in-house RFI/EMC test lab.  Wrote C++ software to automate various MIL-STD 461/462 tests using the HPIB port on  signal generators, spectrum analyzers, E-field probes and similar equipment.  Confirmed that new products met FDA required tests such as FCC part 15, CISPR 11, UL, IEC 801 specifications.

Alice^®5 Diagnostic Sleep System

Air National Guard, 129 TCS, Kennesaw, GA    
January 1986  -  January 1992

Enlisted as a Wideband Radio Communications Specialist.  Graduated Keesler Tech school with highest honors and honorably discharged in January 1992.  Position responsibilities included installing, operating and troubleshooting secure wireless WANs and LANs implementing microwave radio systems used in NATO exercises.

Portable Comm Unit