John Ernsthausen

OBJECTIVE

Seeking consulting and software development opportunities.

PROFESSIONAL SUMMARY

Curious. Think critically. Plan strategically. Wide range of technical skills. Solve impossible problems. Great ideas. Get it done, can do attitude. Background in web development, software development, computational science engineering, and research software development. Experiences range from software development to research to construction to farming to business to sales.

TECHNICAL SKILLS

Software: Matlab, Photoshop, SPSS, R, Office (Libre, iWork, Microsoft)
Languages: Ruby, HTML, CSS (grid, flex, SASS), Fortran, C++, Java
Unit Testing: Google Test, CppUnit, Test::Unit, MiniTest, JUnit
Frameworks: Rails, Jekyll, Wordpress, JQuery, Apache
Version Control: git
Automation: Rake, Make, Ant, Grunt, Gulp, Webpack, Puppet
Editor: VIM
Operating Systems: *nix, Mac, Windows, VMS/VAX
Databases: SQL,TSQL, SQLite, PostgreSQL, DDL
Industries: Web, marketing, chemical modeling, electrical modeling, medical equipment, robotic vision, image processing, drug design
Methodologies: Agile, test driven development (TDD), SEO, data management, Model-View-Controller (MVC), DevOps
Mathematics: Mathematical modelling, numerical linear algebra, numerical nonlinear equations, numerical differential equations, differential-algebraic equations, differential geometry

PROFESSIONAL EXPERIENCES

DEVELOPER & OWNER · Smarty Pixels · Pittsburgh, PA · 2012 – Present

Exceptional software craftsmanship following test driven development
Excellent HTML5, CSS3, and SASS skills
Experienced Rails Model-View-Controller (MVC) developer, exceptional in the View
Use the Git version control system
Advocate proven search engine optimization (SEO) methods
Responsible for marketing and identifying sales leads
Pitch creative work to potential and current clients
Create effective content for websites and info-graphics

DATA COORDINATOR & ANALYST · Law & Psychiatry · Western Psychiatric Institute · UPMC · Pittsburgh, PA · 2007 – 2010

Solely maintained an internal data environment that tracked interviews involving 10,000 variables for completeness, imported interview data into usable datasets, and supported other team members in safe data cleaning
Improved data tracking quality control
Designed a (software) robot to craw the study repository
Solely developed and maintained the interactive study website for sub-setting large datasets
Automated complex data coding tasks; significantly improved efficiency
Helped author and maintain study documentation

RESEARCH CONSULTANT · Carnegie Mellon University AND AnaLux Inc AND University of Pittsburgh · Pittsburgh, PA · 2002 – 2005

Solely designed and developed next generation software for real-time computer control of a spectrometer
Designed an intuitive, interactive, user-friendly graphical user interface
Implemented business logic for real-time image processing at multiple wavelengths
Helped define and implement a domain specific language (DSL) for efficient serial communication with an embedded controller
Optimized Camera-Spectrometer communications with empirical studies
Developed protocols and analyzed data for initial experiments on the early detection of human melanoma cancer

RESEARCH CONSULTANT · Chromodynamics · Pittsburgh, PA · 2002 – 2005

Worked on basic science studies of human articular cartilage (knee joint) and the effect of the highly controversial thermal ablation surgical technique as administered by three commercially available instruments
Co-authored publications [B2], [B3], and [B4]
Helped design and assemble a robotic arm to mimic surgical movement
Authored MatLab software to control the speed and position of the robotic arm based on a contact pressure objective while collecting temperature data in a harsh radio-frequency environment
Developed and implemented image segmentation algorithms to measure live-to-dead cell ratio
Formulated and numerically solved a mathematical model for thermal ablation – a partial differential equation – based on parameters found from study data and compared actual results with model predictions

RESEARCH CONSULTANT · Carnegie Mellon University · Pittsburgh, PA · 1999 – 2001

Worked with team members on concept development for a mathematical protein folding model of triple-helix collagen proteins containing over 10,000 amino acid centers
Developed a first generation software implementation of the model
Patented concept [A1]
Significantly reduced real convergence time over industry standard molecular dynamics software

RESEARCH ASSISTANT · University of Pittsburgh · Pittsburgh, PA · 1994 – 1998

Graduate student researcher for W.C. Rheinboldt and P.J. Rabier
Identified mathematical models in the open literature
Developed scientific software for the numerical solution of differential algebraic equations advancing the field of differential equations
Co-authored publication [B5]

RESEARCH ASSISTANT [link] · University of Pittsburgh · Pittsburgh, PA · 1992 – 1994

Graduate student researcher for T.A. Porsching and C.A. Hall
Developed theory and software for commercial optical grinding applications
Co-authored publication [B6]
Mathematically modeled the commercially used draper machine for optical lens manufacturing

CERTIFICATIONS AND TRAINING

LunaMetrics training course on search engine optimization [SEO] [copy] [content]

EDUCATION

McMaster University, Hamilton, ON, Canada: Master of Science in Computational Science Engineering, 2018.
THESIS: Rigorous defect control and the numerical solution of ordinary differential equations [link]
University of Pittsburgh, Pittsburgh, PA, USA: Doctor of Philosophy in Applied Mathematics (all but dissertation)
University of Pittsburgh, Pittsburgh, PA, USA: Bachelor of Philosophy (honors) in Chemistry and Mathematics, 1992. Graduated Magna Cum Laude.
THESIS: Approximation methods in the computer numerically controlled fabrication of optical surfaces

PATENT

[A1]: “Methods and systems for molecular modeling.” US Patent Number 25181. Isrealowitz M, Cohen A, Ernsthausen JM, Campbell P, Ernst L, Farkas DL, and Galbraith W. [link]

PUBLICATIONS

[B1]: “Stepsize selection in the rigorous defect control of Taylor series methods.” 368 Journal of Computational and Applied Mathematics, 2020, Ernsthausen, JM and Nedialkov, NS. [link]
[B2]: “Temperature requirements for altering the morphology of osteoarthritic and nonarthritic articular cartilage: in vitro thermal alteration of articular cartilage.” 32 no. 3. Am J Sports Med., 2004, 688-692. Kaplan LD, Ionescu DS, Ernsthausen JM, Fu FH, Bradley JP, and Farkas DL. [link]
[B3]: “The thermal field of radiofrequency probes at chondroplasty settings.” 19 no. 6. Arthroscopy, 2003, 632-640. Kaplan LD, Ernsthausen JM, Bradley JP, Fu FH, and Farkas DL. [link]
[B4]: “Thermal energy effects on articular cartilage: a multidisciplinary evaluation.” 4622. Proceedings of SPIE, 2002, 11-23. Kaplan LD, Ernsthausen JM, Ionescu DS, Studer RK, Chu C, Bradley JP, Fu FH, and Farkas DL. [link]
[B5]: “The Hopf bifurcation theorem for quasilinear differential-algebraic equations.” 170 no. 3-4. Comput. Methods Appl. Mech. Engrg., 1999, 355-371. Rabier PJ with appendix by John M. Ernsthausen entitled, “Computational methods and bifurcation theory with applications”. [link]
[B6]: “A mathematical model of material removal with application to CNC finishing.” 18. Mathl. Comput. Modeling, 1993, 25-40. Porsching TA, Hall CA, Bennett TL, and Ernsthausen JM. [link]

HONORS AND SERVICE

2017 Math Matters, Apply it! Contest [SIAM, McMaster University]: Cash prize
Second place
2017 CSE Student Symposium presentation contest: Cash award. (2 recipients)
First place presentation
1994 M.M. Culver and E. Teplitz Memorial Award, Department of mathematics: Cash award (only recipient)
Superior performance in teaching mathematics
1991 Brackenridge Summer Research Fellowship, University honors college [link]: Cash award and summer research fellowship (~40 recipients)
Academic record, proposed project, and willingness to help create and participate in an interdisciplinary community of students
1991 Teplitz Scholarship, Department of mathematics: Cash award and senior year tuition (only recipient)
Academic record.
1987 to 1992 LaLitta Nash McKaig Scholarship, McKaig foundation: Tuition
Academic record and resident of Somerset County, PA
1989 The Valspar Corporation Award in Chemistry, Department of chemistry: Cash award and three month paid summer internship at the Valspar Laboratories in Pittsburgh (2 recipients)
Academic record