M. Johan Kellum Email and Phone Number
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An IT professional with extensive experience building web applications and custom backend solutions. Many years with the Ruby language and Rails framework, with familiarity in the entire Ruby on Rails stack. Experience building complex and useful applications that need to be reliable and scalable, with a track record of success. Interests include data compression and a slight obsession with the Traveling Salesman Problem.
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Software ArchitectAllied 100, Llc (Aedsuperstore.Com)Madison, Wi, Us -
Software ArchitectAllied 100, Llc (Aedsuperstore.Com) Nov 2018 - PresentMadison, WiMaintain and enhanced a large in house application vital to the sales, maintenance and regulatory laws related to AED's (automated electronic defibrillators).Created a system from scratch, that runs in the cloud, and gathers information on remotely monitored AED's. This system scrapes data from various websites or APIs and synchronizes it with the main in house application. -
Lead Software EngineerVitalmetric Llc Mar 2017 - Jan 2018Madison, Wisconsin AreaDesigned, built and maintained a full suite of software to ingest, store and display data that wascollected from custom built remote sensing hardware. - Created a robust modular set of software running on Raspberry PI’s to collect and sync data to aPostgres DB on AWS.- Created a backend API in Rails.- Created a frontend in AngularJS
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Principal EngineerUpdown Technologies, Inc. Jan 2015 - Jan 2017Madison, Wisconsin AreaPlayed a pivotal role in designing, building, and maintaining a complex, useful, self-sustainingfitness platform for a small startup business .- Built Android, iOS, and Amazon mobile applications using Ionic and AngularJS- Built a robust backend API using Rails, Postgres, and Redis that involved using several differentAmazon Web Services.- Built custom asset management for partners using Amazon Cloudfront.- Built browser based customization tools for partners.- Built an integrated subscription system with Braintree.- Continuously improved the code base and DB queries in order to meet higher than expected usage. - Helped garner: several hundred thousand application downloads, 60,000 active users and severalhundred paid subscriptions.
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Lead DeveloperHelloagent Llc Aug 2012 - Aug 2014Madison, Wisconsin AreaBrought in as a founding developer. Planned and created, a website to aid real estate agents. Responsible for the full stack development and implementation.- Built a web scraper to aggregate information about home properties
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Software EngineerMedical Education Institute, Inc. (501C3) Jan 2010 - Jul 2012Madison, Wisconsin AreaDeveloped, maintained and enhanced an integral web application used by a majority of dialysis clinics in the U.S. Technical lead and manager on government contracts.- Ensured that the cornerstone custom KDQOL survey service was HIPPA compliant and passed strict security requirements.- Implemented a fast index and searching solution using SOLR and LUCENE.
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Software EngineerWisconsin Circuit Court System Feb 2009 - Jul 2010Madison, Wisconsin AreaProvided support and development for various internal web applications related to the Department of Justice and the Circuit Court.- Created an automated system for pdf generation for a public facing pro se legal website.- Maintained and enhanced numerous web applications
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System EngineerZencoder Feb 2007 - Jul 2009Madison, Wisconsin AreaMajor contributor to the foundation of software for a cloud based transcoding company that became a very successful Y Combinator startup.- Created a robust system to accept user uploaded video, send it to custom AWS EC2 images for transcoding, then be made available when complete, according to specific recipes.- Created custom auto-scaling algorithms based on factors such as demand and priority.- Modified open-source transcoding software (FFmpeg) to enable custom thumbnailing.
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Software EngineerMyweather Llc/Weather Central Jan 2000 - Jan 2007Madison, Wisconsin AreaDesigned custom applications that provide real-time weather data to web users and data streams to customers including TV stations and newspapers. Wrote software that must run reliably 24 hours a day in support of client's operationally driven deadlines.- Developed a proprietary high throughput server to handle 200 concurrent connections per second from over 100K desktop client applications.- Created a dynamic weather mapping system used to generate live content aggregated from many sources.- Created numerous web interfaces for time sensitive weather content.- Created a server to manage and disseminate over a terabyte per day of weather model data.
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Software EngineerUw Biotechnology Center Jan 1999 - Jan 2000MadisonDeveloped image analysis software for the Optical Mapping process. Collaborated with the researchers to write software to automate tasks and enhance their productivity.- Developed and improved parts of the image analysis tools used by the laboratory. - Created a versatile visualization tool to view 2D genetic restriction maps.- Wrote software that interfaced with microscopes to improve auto focusing.
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Software EngineerUw Space Science And Engineering Center Jan 1996 - Dec 1999Madison, WDeveloped and managed Vis5D a Scientific 3D Visualization program. Performed a wide range of other duties, including user support and education, collaboration with the user community, feature requests and improvements, and extensive documentation.
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Software EngineerUw Space Science And Engineering Center Jan 1996 - Jan 1999Madison, Wisconsin AreaDeveloped and managed Vis5D a Scientific 3D Visualization program. Performed a wide range of other duties, including user support and education, collaboration with the user community, feature requests and improvements, and extensive documentation.- Managed a large code base written in C.- Designed, implemented and tested significant enhancements to the software.- Ensured that the source code would compile on all flavors of UNIX and LINUX.- Presented a paper on Vis5D at the Annual 1999 American Meteorological Society meeting.- Gave workshops and tutorials on the software.
M. Johan Kellum Skills
M. Johan Kellum Education Details
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Atmospheric Sciences And Meteorology
Frequently Asked Questions about M. Johan Kellum
What company does M. Johan Kellum work for?
M. Johan Kellum works for Allied 100, Llc (Aedsuperstore.com)
What is M. Johan Kellum's role at the current company?
M. Johan Kellum's current role is Software Architect.
What is M. Johan Kellum's email address?
M. Johan Kellum's email address is jo****@****ail.com
What is M. Johan Kellum's direct phone number?
M. Johan Kellum's direct phone number is +160883*****
What schools did M. Johan Kellum attend?
M. Johan Kellum attended University Of Wisconsin-Madison.
What skills is M. Johan Kellum known for?
M. Johan Kellum has skills like Sql, Javascript, Software Development, C++, C, Linux, Mysql, Agile Methodologies, Web Services, Ruby On Rails, Angularjs.
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