# Karim Mastrobuono > Sr. Staff Software Engineer Location: San Clemente, California, United States Profile: https://flows.cv/karim Experienced Software Architect with a demonstrated history of shipping enterprise applications. Particularly skilled at the architecture and achieving mobile digital transformation for both established companies and startups alike. Notable Companies on my portfolio include: Petco, pilot flying J, CNN, Walmart, Titan and Kimberly and Clark. ## Work Experience ### Lead Staff Software Engineer @ eBay Jan 2024 – Present | San Jose, California, United States Engineering Lead for the services that power HomePage for eBay.com worldwide. ### Head of Engineering @ Kalu LLC Jan 2019 – Present | Orange County, California Area Provide software consulting services for the retail industry. ### Technical Lead @ Jeeves Jan 2023 – Jan 2024 | California, United States Jeeves is a global provider of financial services catering to modern global startups. As a lead backend engineer, my primary responsibility entails driving the development of virtual wallet and payment solutions that enable our vast customer base to engage in seamless transactions on a global scale. ### Staff Software Engineer - Tech Lead @ Walmart Global Tech Jan 2021 – Jan 2023 | Carlsbad, California, United States ### Sr. Software Development Engineer @ Walmart Global Tech Jan 2019 – Jan 2021 | Greater San Diego Area ➢ Lead on cross team initiatives. ➢ Responsible for resource allocation and planning of initiatives. ➢ Documenting and establishing contracts between services. ➢ Feature development using swift, kotlin and javascript (React Native). ➢ Backend development using Node and Kafka. ➢ Monitoring and investigating production issues via Splunk. ➢ Interviewing candidates. ### Mobile Architect @ Cie Jan 2018 – Jan 2019 | Irvine ➢ Architected and lead the development Petco's iOS and Android native mobile applications. ➢ Architected and lead the development Pilot Flying J's iOS and Android mobile applications. ➢ Architected and lead the development Leslie's Pool iOS and Android mobile applications. ➢ End-to-end ownership of application architecture for mobile projects ➢ Assisted in proposal construction through accurate time estimates & technical recommendations ➢ Develop, maintain, and grow a repository of reusable source code in order to increase development velocity ➢ Create, maintain and update processes to allow bootstrapping of new mobile projects as quickly as possible ➢ Define, design, and standardize application architecture principles, methodologies, and best practices ➢ Ensure design principles and methodologies are thoroughly documented across platforms ➢ Lead technical design sessions with the development teams and guide them on design specifications ➢ Ensure architectural standards are followed via thorough code reviews ➢ Provide architectural oversight on multiple projects simultaneously ➢ Research and development, prototyping, and vendor evaluation ➢ Mentor technical leads and developers ### Senior Mobile Developer @ Cie Jan 2015 – Jan 2019 | Irvine, CA ### Mobile Developer @ WorkWave (formerly Marathon Data Systems) Jan 2014 – Jan 2015 | Greater New York City Area ➢ Architected the Xamarin Core Libraries used across mobile applications company wide. ➢ Developed various Native iOS and Android applications targeting the field service industry. ➢ Working closely with Product Manager for sprint planning and estimations. ➢ Principal Software Engineer across multiple projects. ➢ Worked closely with UX-UI teams for mobile design feedback. ➢ Provided technical solutions to field impacting issues. ➢ Considered by peers as a subject Matter Expert for Mobile related questions in the Company. ➢ Executed technical phone screens and interviewing candidates. ➢ Instituted mobile best practices across teams. ➢ Meticulously writes unit tested code keeping an eye on efficiency, maintainability and code reuse. ➢ Setting up continuous integration for building and deploying Mobile Apps using Jenkins and Go. ➢ Developed Hybrid applications using Sencha Touch MVC and Cordova framework. ➢ Creating Native plugins for Cordova using Objective-C and Java. ➢ Maintained Sencha Touch and Cordova Framework up to date. ➢ Performance tuning of iOS applications using Instruments. ### Mobile and Web Developer @ Perficient Digital (Formerly Bluetube) Jan 2013 – Jan 2014 ➢ Developing native iOS and Android applications in C# and Xamarin. ➢ Multithreaded/Asynchronous applications development. ➢ Securing enterprise iOS and Android mobile Applications in Objective-C and Java. ➢ Designing and implementing database models with SQLite.Net. ➢ Creating and updating technical documentation. ➢ Customizing Sitecore Content Management Systems to drive content in native mobile applications. ➢ Developing and maintaining high traffic sites using tools and techniques including but not limited to .NET, IIS, Sitecore, Rest, Glass, jQuery, AJAX , SASS, Responsive HTML and CSS frameworks. ➢ Architecting and Developing Web Services using Rest and Service stack. ➢ Querying and Maintaining SQL Server Instances. ➢ Writing SOQL queries and consuming Salesforce data from mobile applications. ➢ Hybrid applications development using JavaScript, Titanium Studio and the Appcelerator framework. ➢ Joined software development team at fortune client locations. ➢ Leading and mentoring junior developers. ➢ Daily standups and bi-weekly releases. ### Software Developer Intern @ Owanis Consulting Jan 2009 – Jan 2009 | France Responsible for creating a set of modules that, based on client needs, automatically ranks and select IT consulting companies that are best suited to do the job. Algorithms were developed using patented mathematics and statistics function and built in collaboration with the of the University Of Montpellier. ### Web Application Developer Intern @ CQFD Jan 2008 – Jan 2008 Created a white label e-commerce website including backend from scratch using PHP and MySQL. Features include front end in HTML, back office, inventory, orders and users management. ## Education ### Bachelor's degree in Computer Science Valdosta State University Jan 2009 – Jan 2012 ### Associate's degree in Computer Software Technology/Technician EPSI - L'école d'ingénierie informatique Jan 2007 – Jan 2009 ## Contact & Social - LinkedIn: https://linkedin.com/in/kmastrobuono - Website: http://www.karimmastrobuono.com --- Source: https://flows.cv/karim JSON Resume: https://flows.cv/karim/resume.json Last updated: 2026-03-22