* Delivered 50+ small to large projects for web apps or embedded devices, enhancing functionality and introducing new features for the law enforcement business unit. Collaborated with business teams to align project goals with customer needs, supporting sales in customer acquisition and retention.* Crafted a geofencing project from initial design to production deployment that automatically uploads videos from embedded devices to AWS S3 based on GPS location. Utilized Vue.js to create interactive, editable maps, integrated third-party APIs and executed complex PostgreSQL queries. The feature improved operational efficiency for law enforcement customers by automatically uploading videos after patrol vehicles return to station, resulting in over 50% feature adoption.* Constructed and implemented a highly interactive Dispatch Map page using Vue.js, HERE Maps, Node.js, and Express.js, integrating device data from MySQL and PostgreSQL databases. Implemented custom SVG map markers, geocoding services to outline jurisdictions, and real-time device location updates every 20 seconds. This feature enhanced the operational awareness of law enforcement customers.* Designed and developed a video segmentation feature using Vue.js and the videojs package, enabling customers to easily create small videos from larger video files. Integrated server-side processing with AWS S3 and ffmpeg to extract and upload segmented videos, automating workflows and ensuring secure file storage.* Built and deployed an administrative reports portal for senior management, leveraging advanced table components to track critical cost metrics such as device cell usage and cloud storage. Integrated T-Mobile and AWS Cost Explorer APIs, developing complex server-side workflows to match third-party data with customer usage.

* Activley engaged in on-site classroom training where I learned JavaScript, React.js and Node.jsthrough hands-on projects while delivering high quality results and meeting weekly short deadlines.* Played a key role in the development of a full stack React.js capstone project, delivering a polishedand functional web application. A demo of this project is available at https://jeffkarr.com/images/Pet Purfect Demo.mp4.

Worked with project teams to design, test, tune, install and support mainframe database objects.Assisted callers to promptly resolve issues that were received from the Database Hotline.Assisted project teams with tuning performance issues. Over 3 years experience serving in level-1 database on-call schedules. Performed weekly maintenance on large volumes of databases within strict outage windows.

Designed technical solutions that met or exceeded client expectations. Developed project estimates, drafted technical design documents, planned my work, constructed and thoroughly tested complex programs, consistently met deadlines, carefully planned for installs and supported my projects if issues were reported. Redesigned many programs to improve processing efficiency and reduce wall clock time. Over 9 years experience serving in level-1 technical on-call schedules.

Significantly participated in daily support teams to convert two very large new clients. Led several successful system conversions and fund merger events. Worked with many associates across the enterprise to resolve elusive or complex technical issues. Served on development teams to build reliable, error-free system enhancements that met or exceeded client expectations.