Mark Wisniewski Email & Phone Number

Python Development• Ensure version control and proper management of code though Git repositories• Integrated new code with existing code and verified compatibility with modules and packages in virtual environment• Utilized standard data processing libraries (sklearn, pandas, numpy, etc.)Amazon Web Services (AWS)• Setup Linux EC2 instance in AWS • Utilized SSH, Users, Security Roles, etc. to ensure proper security• Stored data from websockets as well as API calls to MySQL Databases on Ubuntu serverMachine Learning• Developed predictive Machine Learning/Deep Learning models using Tensorflow• Preprocessed data for ML models by filtering outliers, utilizing scalers, splitting test/train data, etc.• Created test scripts to validate model predictions

Arlington, Va, Us

Python/MATLAB• Developed custom software for EMC testing to form a heat map of noise at different frequencies• Used motion tracking and sensors to pinpoint areas of module producing high EM noise• Utilized REST API calls to pull online data, compare with local BOMs, and generate alternate parts as well as confirming availability• Automated standard Oscilloscope functions with python scriptsHardware• Submitted documentation to outline module operation and integration• Debugged failures/design concerns (manufacturing issues, power quality, signal integrity, etc.)• Utilized TDRs and other HW to test and verify signal integrity

Espoo, Southern Finland, Fi

Hardware• Optimized PCB layouts to minimize switching noise• Analyzed supplier products to ensure next-gen architectures operate within design restraints• Designed buck converters with a focus on minimizing component cost while maintaining high efficiency• Tested power converters to ensure ripple and loading response meet design specificationsPython• Developed efficient code to test power supplies with different specs• Created SW to connect with multiple sets of test equipment simultaneously and verify device operation• Utilized Python and custom hardware to automate validation tests• Significantly improved test time for new HW• Algorithmically extracted key parameters such as loading response time/magnitude from waveform data

Dublin, Ie

Projects/Embedded SystemsPower Distribution Modules• Microcontroller based designs• Integrated transceivers forcommunication• Solid state switched outputs• Relays/fuses utilized for higher poweroutputsPower Conversion• ICs and MCU control for bidirectionalcurrent flow/monitoring• Buck-Boost DCDC converter topology• Permits cell balancing and charging• High efficiency achieved by minimizinginductor losses, switching losses, etc.Battery Isolation• High-power components such as lowresistance FETs utilized• Isolates AUX and MAIN Batteries whennecessary• Improved protection algorithm for systemValidation and Analysis• FMEA (Failure Mode and EffectsAnalysis) to ensure robustness• WCCA (Worst-Case Circuit Analysis) toensure operation in extreme conditions• Product Validation Testing• LTspice circuit simulation (includingEMC)Software• Develop software control algorithms anddiagrams• Work with SW team to diagnose andresolve issues• Arduino/Python to automate testing• VBA to automate repetitive tasks and toanalyze/format dataLab Experience• Soldering surface mount components/ICs• Utilized Oscilloscopes, DigitalMultimeters, Thermal Chambers, VehicleNetwork Analyzers, etc.• Construct crude test fixtures/apparatusesin the field when necessary (during vehicleissue diagnostics)Systems Engineering• Review and assign customer requirements to applicablecompetencies• Coordinate discussions with different competencies todesignate root causes and resolve issues• Adhere to internal Global ASPICE Compliant Process• Utilize Polarion to ensure all requirements can be tracedback to customer or internal requirementsFunctional Safety/ISO 26262 (Autonomous Vehicle Applications)• Designed using watchdog, limp-home circuitry, and other fail-safearchitectures• Component selection for ASIL applications• Prepared FMEDA, technical safety requirements, HARA analysis,system level FMEA, etc.

St. Louis, Mo, Us

Device CoordinationPower EfficiencySystem ProtectionReliability EngineeringProcess Automation