John Kryspin Email & Phone Number

Cambridge, MA, US

Boston, Massachusetts, US

Creating and maintaining performant systems every dayArchitected and implemented custom database sharding with MySQL and C# on one of DraftKings most critical services, unlocking infinite scale and lower latencies across the board

Boston, Massachusetts, US

Implemented.NET/C# changes to add functionality for product verticals (Daily Fantasy, Sportsbook, Casino) using scalable patterns for high load scenarios (NFL Traffic)Led design and creation of backend changes using.NET/C# and SQL to support DraftKings Marketplace transactionsCreation of Draftkings balances and transaction history services in.NET with.

Armonk, New York, NY, US

Lead Software Engineer for the IBM Training team. (ibm.com/training)Migrated/redesigned legacy Java app to modern Node.JS/React/Redux on IBM Cloud Extensive knowledge of DB2 SQL and cloudant/couchdb NoSQLExtensive knowledge of NodeJS and React, React Hooks API, latest ECMAscript featuresExtensive usage of dev ops tooling, such as Docker containers.

Armonk, New York, NY, US

Created multiple Java data flow into ibm.com/learning to populate the search engine and course dataCreated website using Express.js/Passport.js to display pertinent metrics formanagers to better manage their teams such as their colocation metrics.Experienced with CRON jobs and Linux commands

Armonk, New York, NY, US

2nd place winner at IBM's 2016 Intern HackathonCreated responsive iOS app using Swift which displays a mobile friendly version of IBM's Work Force Management system. Worked independently on the app with advice from my mentor and manager. We were on an agile system with new versions being shown every week.I presented to the CIO and the end of the summer.

Campbell, CA, US

I was in charge of class of 8 students each week for a 5 week long camp with different student and topics each week. I made each student feel welcome and comfortable by connecting with them. I taught class in a hands on environment with multiple parents asking for private tutoring at the end of the sessions. I had to keep the class on task while still.

I worked at the front desk answering calls and scheduling times for players to play. I kept a positive attitude with all customers and created a fun atmosphere on the courts. I also ran the weekly womens night tennis where I was in charge of teams and overall flow of 3 courts of doubles tennis.

I worked at The Patterson Club for two years and my main duty was to watch the pool and deck for any unsafe activity. I was pool-front certified. In addition I showed my analytical skills by helping my supervisor fix the pool cleaning machine, an estimated cost of $2,000 to repair.

I worked here part time as a lifeguard.