# Jun Zhou > Senior Software Engineer at LinkedIn | ex-Amazon Alexa Location: Greater Seattle Area, United States Profile: https://flows.cv/junzhou I am working as a mobile developer for a while. iOS and Android and React Native. I always have the enthusiasm to learn new technology. Specialties: Mobile application Developing. Programming Languages: Swift, Objective-C, Java, Typescript. ## Work Experience ### Senior Software Engineer @ LinkedIn Jan 2022 – Present | Bellevue, Washington, United States Media SDK ### Software Development Engineer II @ Amazon Jan 2021 – Jan 2022 | Seattle, Washington, United States Alexa mobile foundation ### Software Development Engineer @ Amazon Jan 2019 – Jan 2021 | Seattle, Washington, United States Alexa Comms ### Mobile Developer @ Jump Technologies, Inc. Jan 2016 – Jan 2019 | Greater Minneapolis-St. Paul Area Maintain current mobile applications including iOS and Android version for Jumpstock™ and Innertrack™. Develop and design new mobile application features. Develop new features and fix bugs on web app and server side. Develop and design mobile application testing procedures, bug fixing and documentation. Research new technologies to improve the current system’s performance and efficiency. Analyze statistics on how current application is being used and crash report to improve current system’s stability. Maintain Jumpstock™ and Innertrack™ in Apple App Store and Google Play Store. ### Teacher Assistant-FM5011,FM5012,FM5032 @ University of Minnesota Jan 2015 – Jan 2017 | Greater Minneapolis-St. Paul Area FM5011 teacher assistant. This class is about mathematical background for finance I, including measure theory, Lebesgue integral, probability theory, statistics, stochastic process, stochastic calculus, Black Scholes model and continues time financial modeling. My job including grading the quiz and office hour. FM5012 teacher assistant. This class is about mathematical background for finance II, including optimization, probability theory, statistics models, estimation, CAPM model, GARCH models, hypothesis testing, time series analysis, portfolio and beta. FM5032 teacher assistant. This class is about practitioner's in finance, including Risk management, Mortgage and Copula. My job including grading the homework, grading the exam and office hour. ### Co Founder @ Twistjam Jan 2015 – Jan 2016 | Greater Minneapolis-St. Paul Area Twistjam is a music app help people remember tabs and learning how to play guitar. User can edit your own tabs and lyrics and sync them with the music through the app and upload it to cloud and share with others. Right now, the app is in App Store and it's free. ### iOS Developer @ Software for Good Jan 2016 – Jan 2016 | Greater Minneapolis-St. Paul Area Developed RMS iOS app’s front-end, including UI, framework, database and functions. Cooperated with back-end developers, defined the APIs and updated the server for mobile app. Developed background queue to upload offline data in order and complicated formula validation model. This app has been launched in app store in April 2016. ### iOS Developer @ MyStride Jan 2015 – Jan 2015 Mystride is an app for horse rider to detect their riding skills, such as gait, trot and walk. Using sensors and GPS, this app can detect riding data and give riders a direct statistic report to show their behaviors on horse back. Riders can share and review their riding activities and manage their horses in stable. More important, Mystride is a platform for all service provider in horse industry. Riders are able to order any services for horse and purchase riding gears through the app. All service providers can open a store in the app to sell more service and products to riders. Mystride is a bridge between riders and service providers. My responsibilities including: 1.Develop front end, UI, animation. 2.Define API using Swagger and import into AWS APIGateway 3.Use sensors and GPS in iPhone to record rider’s riding data to detect and developing motion algorithm with Kiwi. 4.Use AFNetworking to upload data to Kiwi’s database. 5.Import popular social networking SDK. 5.Use AWS Cognito for user authorizing identification, use AWS Lambda function and NodeJS to implement the API logic parts. ### MFM Winter Workshop @ University of Minnesota Jan 2014 – Jan 2014 | Greater Minneapolis-St. Paul Area FIX Protocol and auto-trade algorithm –Learned how to design trading strategies and analyze time series. 1.Familiarized with the FIX protocol and the QuickFix engine. 2.Built a FIX client that could connect to, read data from, and trade on the server application provide by instructor. 3.Performed time-series analysis to determine the embedded signal, and trade autonomously. ### Fall Assistant Trader @ ShengJiade Investment Jan 2012 – Jan 2012 1.Assisted trader to perform trade in foreign exchange market using MT4 trading platform and the technical analysis. 2.Utilized the ExpertAdvisor language to coding our trading strategies and trade autonomously. 3.Assisted the analyst in writing daily assessment reports and update our trading strategies. 4.Practiced foreign exchange trading with a practical account; developed trading strategies and wrote daily reports for management on results and emerging trading strategies. ### Nanjing University of Sci.&Tech @ Nanjing University of Jan 2011 – Jan 2012 | Nanjing, Jiangsu, China Medical Image Reconstruction –Developed strong programming skills and enhanced mathematical depth. 1.Wrote MATLAB programs to process images that contained image segmentation, registration and fusion. 2.Tested and improved the programs to ensure their effectiveness. 3.Used the programs to process real medical images and made the final presentation to academic judges. 4.Judges rated our work in the highest category; team received $1,500 in research funds. ### Summer Financial Analyst @ Founder Securities (Shaoshan Branch), Jan 2012 – Jan 2012 1.Evaluated client portfolios relative to their investment objectives and risk tolerance. 2.Assisted the analyst to improve the stock recommendation system on the client software. 3.Researched potential client information to widen corporation's client base. ## Education ### Master’s Degree in Financial Mathematics University of Minnesota Jan 2013 – Jan 2015 ### Bachelor of Science (BS) in Computer and Information Sciences, General Nanjing University of Science and Technology Jan 2009 – Jan 2013 ## Contact & Social - LinkedIn: https://linkedin.com/in/zhou0309 --- Source: https://flows.cv/junzhou JSON Resume: https://flows.cv/junzhou/resume.json Last updated: 2026-03-22