John (Jack) Kohoutek, Ph.D. Email & Phone Number

Chicago, IL, US

Lake Oswego, Oregon, US

My core mission at Vesta is to create ML models that prevent chargeback fraud for ecommerce merchants. I provide technical leadership, providing distinct tasks to modeling teams that coalesce to help the team reach a specific company goal. Key contributor to global ML strategy.Build models for legacy platform serving individual clients. We demonstrate use.

Scottsdale, Arizona, US

My core mission as the Director of DS at Zelle was to lead the team to create consortium models to stop fraud and scams in the US banking system. We created new versions of legacy models and new models when new products arose (such as Zelle p2p funds transfer). Increased the size of the team by 150% during my tenure. Team submitted 130 concept briefs and.

Scottsdale, Arizona, US

Created a new management structure for the DS team at Zelle, optimized for collaboration, creativity, and thought diversity. Democratized project leadership, training new leaders with every round of projects, while giving mentorship and technical direction by collaborating with them on tasks assignment and specific modeling workflows.Led the development of.

Scottsdale, Arizona, US

Led the team that created the first AI/ML production model at Zelle, including sampling the data and features, choosing the algorithm and prediction explanation method, validating the model both internally and externally, and creating documentation for the model for the banks as well as internal use. The team provided recommended strategies to the banks.

Scottsdale, Arizona, US

Utilized quantitative coding techniques with tools/methods such as Hive/hadoop/hdfs, SQL, Python and distributed computing on structured data to contribute to ML model development. I used statistical programming, data mining, and supervised/unsupervised modeling algorithms, such as tree-based and clustering. Led POCs for predicting check and ACH returns.

US

Used reverse engineering to present clients with a true-cost estimate of their own manufactured products. Through subsequent negotiation, we saved up to 10 million USD per SKU per year. Presented and syndicated results of PCB costing directly at client sites and through teleconference. Worked with firm Partners as a technical expert.Developed Python.

Skokie, IL, US

Acted as the lead engineer for data and algorithms, bringing academic prototypes into commercially realizable technologies. Led a cross-functional team to design and implement the prototype NFP-E single-cell transfection system, which allowed DNA single-cell transfection without damaging the cell membrane.Transformed the manual tool to transfect single.

Falls Church, VA, US

I worked on the Modeling and Simulation team at Northrop Grumman.Created object-oriented missile countermeasure algorithm, as well as data analytics tools for an aircraft flight computer. Developed algorithms to determine missile range and countermeasure parameters based on video data. Carried out integration and test work on the F-15 infrared.

Gaithersburg, MD, US

Simulated nanophotonic devices utilizing a distributed high performance cluster (HPC) system. Performed interdisciplinary research among scientists, engineers, and technicians, across pure and applied sciences.Performed large-scale numerical modeling using finite-difference time-domain (FDTD) algorithms for simulation of nanophotonic devices. I used these.

Evanston, IL, US

I worked on simulation and modeling of nanomechanical and nanophotonic devices, and the intersection of the two. Created first-principles model of nanomechanical cantilever using Partial Differential Equation which could only be solved numerically. Completed Finite-Difference Time-Domain models and simulation of optical nanoantennae.Worked on iterative.

Doctor Of Philosophy - Phd, Electrical Engineering

Bioengineering And Biomedical Engineering

Bachelor Of Science - Bs, Electrical Engineering