C++/C# Software Architect and Team Lead
Resume:
Steven Todd Zastrow
Knoxville, TN 37923
*****@********.***
Summary
General: Object-Oriented Requirements Analysis and Design, Software Architecture, UML/SysML, Embedded and Real-Time Systems, Web Development, Design Patterns, Team Leadership, Staff Management, Project Management, Training.
Methodologies - Agile, Rational Unified Process, Waterfall
Industries: Medical Devices, Industrial Automation, Government, Health Care, HVAC, Insurance, Telecommunications
Programming Languages –C++, C#, Java, Javascript, Python, Visual Basic, Linux Shell Script, SQL, PHP
Operating Systems - Windows, Linux (Debian, Yocto), UNIX, VRTX, MQX
Platforms - PC, ARM, DSP, Microcontrollers
Networks – Ethernet, CAN, DeviceNet, RS-232, MQTT/SparkplugB
Tools/Software – Visual Studio, Eclipse, Qt, Enterprise Architect, AWS (S3 and EC2), Docker, Kubernetes, Atlassian (JIRA, Confluence, Bitbucket), Rational Rose, Together C++, Sparx Enterprise Architect, GDB, JTAG, Git, ClearCase (including UCM), SAP BusinessObjects, Microsoft SSIS, Cross compilers, Entity Framework, FlexBuilder, NetBeans IDE, MySQL, Spring, Microsoft Project, Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft SharePoint, Lotus Notes, Mantis and DDTS.
Work Experience
Softing, Inc. (Formerly Online Development Inc.), Knoxville, TN 11/2023 – 4/2026
Staff Firmware Engineer – Worked as an embedded software developer, developing software for industrial automation equipment that integrates with Rockwell Automation and Allen Bradley equipment.
5069-SDN – Developed software for a device that acts as a bridge between Ethernet/IP and DeviceNet networks.
5069-SDN FAT Fixture – Developed C# application to run the Factory Acceptance Test Fixture for the 5069-SDN, which programs, signs, and tests 5069-SDN hardware.
PKI – Developed PKI for signing Rockwell NEO hardware.
QED – Developed a C# library for automating ODVA CIP EtherNet/IP communication
Certifications – IEC 62443 and CRA
GE Healthcare (Contract via ALKU), Milwaukee, WI (Remote) 8/2022 – 9/2023
R&D Senior Software Engineer – Worked as a software engineer on a research and development
team for the Portrait Mobile Monitoring System, which monitors basic vital signs of patients outside
of the emergency, surgery, and intensive care units, who would otherwise go unmonitored.
Axone Scaling Project – Worked on an effort to increase the scalability of the system by
converting from a single standalone server to a single root, multiple leaf server architecture.
Developed a test harness to automate various system impairments to ensure that the system
can recover properly. This was initially a manual testing project, but I convinced the team
lead that this effort should be automated, and this has proven very useful because it now
tests permutations of impairments that would not have otherwise been considered, and can
be added to the continuous integration system. It has found multiple issues without our
system, including an issue that was in RTI (vendor) code
Was tasked with resolving the differences that have emerged over time in hundreds of QoS (Quality of Service) parameters between XML files in Git, and the Excel spreadsheet model that originally generated them. I developed automation to compare the contents of the spreadsheet against the XML files to simplify this process. The automation simplified the effort enough that it was possible for a junior developer to take over the work.
L3 Harris ForceX, Nashville, TN (Hybrid) 11/2021 – 8/2022
Senior Specialist Software Engineering – Worked as a software developer on a team that develops software for the WC-135 aircraft as part of the Constant Phoenix program which detects nuclear bomb tests.
WOPR– A distributed application that automates the hardware on board the WC-135 aircraft which collects gas and particle samples to determine if a nuclear test has been performed.
Developed a set of loggers to maintain a paper trail of all of the activities happening within the sample collection systems, as well as to serve as diagnostics to correct problems that occur.
Investigated Sparx Enterprise Architect and Cameo Enterprise Architecture for use by the team to do UML design work.
Developed materials to get new developers up to speed (at the moment they plan to add six new developers to the team).
Oak Ridge National Laboratory (Contract via TEKsystems), Knoxville, TN (Remote) 4/2021 – 10/2021
Software Engineer – Worked as a software developer on a team that develops tools to maximize utilization of satellite imagery.
PSICLOPS – Uses pairs of satellite images to infer the elevation of features in the images.
Documented the onboarding process so that new developers can be productive in days instead of weeks.
Debugged issues with a python script used to mask out portions of a satellite image containing water.
Translated the python script into C++ with a number of optimizations (used in-memory temporary files to increase performance, eliminated reopening of files).
Phelps2020, Knoxville, TN 10/2020 – 4/2021
Senior Software Engineer – Worked as a software developer to extend an existing system that enhances and stabilizes from video, as well as performs object detection, so that it will also be able to do face and license plate recognition.
Windows SAM GUI Project
Developed a Qt-based GUI for the application.
Translated Matlab code into C++ production code using OpenCV.
RDI Technologies, Knoxville, TN 3/2020 – 9/2020
Senior Software Engineer – Worked as a software developer on the Iris M and Iris CM systems, which uses video to detect vibration in equipment, and then presents the results in the form of a “motion amplification” video showing what is moving, and to what degree.
DT-2100 Tachometer Project
Modified the Iris CM to interact with the DT-2100 tachometer via USB, using regular expressions to parse the responses.
Modified the triggering subsystem within the Iris CM so that it can monitor the tachometer and capture video when the speed measured by the tachometer exceeds specified thresholds.
Trigger Notification Email Project
Modified the Iris M to allow the user to specify a list of emails to be notified when a sensor trigger fires.
Modified the Iris CM so that it can synchronize the list of email addresses with the Iris M.
Modified the Iris CM to generate a waveform and spectrum plot of the sensor that generated the trigger, as well as a motion amplification video for the period when the trigger was generated.
Modified the Iris CM to upload the waveform plot, spectrum plot and motion amplification video to an Amazon S3 bucket, where it is retained for up to a month.
Modified the Iris CM to send an HTML formatted email using Twillio SendGrid, containing the waveform plot, spectrum plot, and motion amplification video to the designated email list.
Created ASP.NET web application to allow users to subscribe or unsubscribe to these emails.
Debugged issues with low-level DLLs written in C++ so that they can be used in a console application (they were initially designed to work only in Windows applications.
New Software Notification Project
Modified the Iris M to check if new software is available the user is licensed to download, optionally display a PDF describing the new features of the software, and then allow them to download the software from an Amazon S3 bucket.
JointVue, Knoxville, TN 11/2018 – 2/2020
Senior Software Developer – Worked as a C++ software developer on the 3D Echo system, which uses a combination of ultrasound and electromagnetic position tracking to create a 3D model of a joint, for use by orthopedic surgeons in preparation for joint replacement surgery.
Terason Porting Project
Ported the 3D Echo application from the SonixTouch Q+ ultrasound system to the Terason 3200 T ultrasound system.
Developed an application in Qt for viewing, setting, and cycling the relevant ultrasound parameters, as well as displaying both the B-mode and RF images in real time for use in verification testing.
Server Software Upgrades
Upgraded several software packages that are hosted locally at JointVue, including Subversion, YouTrack, and TeamCity.
CGI, Wausau, WI 9/2013 – 11/2018
Senior Software Developer & Team Lead - Worked as a Consultant for clients, including AIG, Analog Devices, Biogen and TIAA-CREF. Served as Staff Manager for up to six people, trained new developers as part of the Associate Training Program, presented lunch-and-learns, and participated as a trainer for STEM Camp hosted by the Boys and Girls club.
State of Colorado “Trails Modernization” Project
Developed software for a modernized version of the “Trails” application, which is a case management system used by the State of Colorado’s Child Welfare Department.
State of Kansas “Advantage Collections” Project
Developed a pair of ASP.NET MVC websites, one for use by taxpayers to pay their debts to the state, and one for internal use by the department of revenue to locate taxpayers with outstanding debts.
Trained team members on ASP.NET, MVC, C#, TSQL, Razor, Nuget, NUnit, Visual Studio Team Services and Git.
Implemented the portal that allowed users to make payments with a credit card via the third party www.officialpayments.com website.
Aqua Finance “XBASE Resource” Project
Responsible for full lifecycle feature development and bug fix work on the Aqua Finance FCA (Financial Company Accounting) application.
The goal of the project was to fill in temporarily for two FCA developers who had recently retired until permanent replacements were found. The application was originally developed in 1987 and was written in xBase++ using the Advantage Database Server, all of which I had to learn on the job.
Developed RESTful Web Services for a Java Spring website and consulted with Aqua Finance employees on VBA code and Linux Shell Scripting.
State of Massachusetts “PERAC/PROSPR” Project
Developed a public-facing .NET MVC website for PERAC (Public Employee Retirement Administration Commission), which provides oversight, guidance, monitoring, and regulation of the Massachusetts Public Pension Systems for the State of Massachusetts.
Developed services for generating PDF documents, sending emails, interacting with the OnBase ECM system, and the complete model, view and controller components for the Vendor Profile, which allows users to maintain information about financial services vendors.
Wisconsin Brewers Guild “WiBL Mobile App” Project
Lead a team of Developers to develop a mobile application for the Wisconsin Brewers Guild, for use by members of the WiBL (Wisconsin Beer Lovers) organization.
Analog Devices “PHP Web Application Support” Project
Modified PHP code used to automate the generation of part specification PDFs to generate additional pages using data pulled from various databases and maintained the PHP-based DataCache website from which the PDFs are generated on demand.
Analog Devices “Compass Support and Enhancements” Project
Responsible for development on Compass application, which is a Windows C# desktop application that serves as an electronic catalog and order tool for Analog Devices’ products, and which can be used in either online or offline mode.
Performed various enhancements to the Compass application, performed releases, developed an installer using WIX, and developed an ETL solution using SSIS for bringing together hundreds of files and databases need to perform a release.
AIG “SLFS” Project
Responsible for development for the SLFS (Surplus Lines Filing System) for the Lexington Insurance Company, member of AIG. Also responsible for reporting the status of all ten members involved in various Lexington related development.
SLFS is a Java Spring application using an Oracle database for managing a class of higher risk insurance policies known as “surplus lines” insurance policies and ensures that each policy goes through a particular lifecycle based on the regulations of the state in which it is issued. The focus of the effort was to allow hierarchical relationships between master policies and certificates, and to develop an ETL solution to automate XML feeds to state reporting systems.
Consulted other members on the team, documented and optimized development processes to bring new people up to speed quickly, and made various improvements to the development environment.
Biogen “BI Outsourcing” Project
Developed reporting solutions using SAP Business Objects in support of the release of their Tysabri and Tecfidera Multiple Sclerosis drugs and reported the status of the three local developers on the team.
TIAA-CREF “Banking Release 13.2” Project
Reviewed and Verified the technical implementation of Banking Release 13.2 of the TIAA-CREF Retirement and Individual Technology group, as well as reported the status of the two local developers on the team.
Responsible for validating the incorporation of the Early Warning Systems DEPOSIT CHEK service to detect fraudulent deposits. The test cases were captured in HP ALM (Application Lifecycle Management), and I automated the execution of the tests us Oracle SQL queries.
UBS “IT Dashboard Prototype” Project
As the Team Lead, I lead a team of developers to create a prototype for a web-based IT dashboard for UBS using Microsoft’s MVC framework and C#. We developed multiple iterations of it, and the client was very happy with what we developed.
GREENHECK FAN CORPORATION, Schofield, WI 8/2009 – 8/2013
Senior Programmer/Analyst - Developer on the CAPS (Computer Aided Product Selection) team that develops and maintains the “CAPS” application, which simultaneously serves as a product catalog, product configurator, and product placement system, through which approximately 95% of Greenheck’s orders are placed.
Served as project manager, responsible for scheduling, release management, new developer training and continuous improvement.
Developed project specification process for taking features from a business case through to task breakdown.
Introduced Git as an alternative to StarTeam for source code version control.
Created “CAPSWeb” intranet site for integrating various web-based tools for CAPS development, plus process document management.
Developed type-independent constraint engine for creating information models.
WAUSAU SUPPLY COMPANY, Wausau, WI 6/2009 – 8/2009
Web Developer - Was hired to do web development, but ended up doing mainly phone and email technical support.
NATIONAL RESEARCH CORPORATION, Wausau, WI 8/2007 – 2/2009
Senior Systems Analyst - Served as systems analyst for web-based company that provides information technology and analysis services for the long-term care industry.
Developed services that allow customers to automatically upload information from their databases to eliminate the cost and potential error of manual entry.
Collected requirements for, and created a prototype of, a web-based tool to help long-term care facilities improve quality by intelligently identifying issues, providing guidance to identify the root cause, and then finally suggest courses of action to eliminate the problem.
Collected requirements for and designed a web-based system for transcribing and managing survey comments.
Performed acceptance testing of software produced for My InnerView by an outside consulting firm.
G.E. HEALTHCARE-IT, Milwaukee, WI 9/2002 – 8/2007
Senior Software Developer on Emerald Acquisition System - Served as member of team that developed next-generation patient monitoring system based on Linux and using C++, on which I was recognized as the Object-Oriented Design Expert on the team. Participated in feature development from requirements through transition to verification/validation group.
Designed and implemented central patient data storage/retrieval subsystem, using XML and XPath for writing and querying data.
Designed and implemented custom XML parser/generator for use in embedded system.
Developed tools for reliable persistent storage, time representation and unit testing.
Designed and implemented software watchdog mechanism to detect and recover from system issues.
Designed and implemented tools to monitor and report system resource usage (heap, stack, flash memory, and CPU), as well as to identify and locate memory leaks.
Investigated, documented and trained team on use of ACE framework.
Redesigned and re-wrote ACE classes used for threading and thread synchronization to achieve needed performance.
Spearheaded redesign of systems communications scheme after original found to be insufficiently scalable.
Spearheaded redesign of central data storage and publishing subsystem using several design patterns (observer, proxy, template method, transaction, etc.) to achieve needed system performance.
TERADYNE BROADBAND TEST DIVISION, Deerfield, IL 9/1993 – 7/2002
Project Lead / Architect on LDU 100 System - Lead successful software team of up to 10 developers during the course of multiple projects, including some projects performed in parallel.
Developed project plans and schedules and provided coordination between departments.
Served as product architect, anticipating and assigning platform infrastructure work necessary for future projects, and reviewed developer work for conformance to requirements.
Developed comprehensive web-based software development process system that greatly improved developer productivity.
Designed scheme to allow for multi-market customization of system.
Provided consulting services to other groups in company on software development process and design techniques.
Defined and enforced configuration management policies based around ClearCase, that distributed responsibilities across team.
Trained new developers in C++ and object-oriented development process.
Remained involved in design and implementation work to keep skills sharp and demonstrate commitment to the process.
Software Developer on LDU 100 System - Served as member of team that created next generation telecommunications test system, utilizing TCP/IP and digital signal processing techniques.
Developed C++ object-oriented framework using Rational Rose to manage concurrency, error handling, and communications.
Designed and implemented an object-oriented system using Rational Rose for controlling proprietary DSP-based hardware to improve performance, flexibility, and provide a more intuitive interface.
Provided guidance to other developers on object-oriented techniques.
Worked directly with customer on-site at British Telecom (in Britain) and Verizon during alpha and beta testing of the product.
Software Developer on RCU 560 System - Served as developer on network controller system. The RCU 560 was the first product developed at that division using C++.
Redesigned multi-threaded resource management system to achieve required real-time performance.
Developed fault-tolerant software download feature that saved the company the cost of field visits to update software.
Trained other developers in RCU 560 architecture and development.
Software Developer on TSC 400 System - Served as developer on Unix-based test system master controller.
Developed software to support X.25 communication.
Extended subsystem responsible for identifying equipment on a telephone line based on the equipment’s electrical characteristics.
Education
GE Medical Systems, Milwaukee, WI
Web Development Courses (Java, Java Server Pages, and Servlets, training from Milwaukee School of Engineering)
GE Six Sigma Green Belt Certification
Teradyne Telecommunications Division, Deerfield IL
Object Oriented Programming and Design (training from Object Mentor)
Advanced Object-Oriented Programming and Design (training from Object Mentor)
Milwaukee School of Engineering, Milwaukee, WI
B.S. Computer Science and Engineering, 3.72 / 4.00 GPA (High Honors)
Senior Design Project – Developed PC virtual reality system (hardware and software).
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