Experience

Keep Technologies

• United States
• Security Systems Services
• 1 - 100 Employee

• Software Engineer

  • Feb 2022 - Present

  Developing the Android and iOS apps to communicate with a car alarm device. Developing the Android and iOS apps to communicate with a car alarm device.



Practical Diet

• Greater Minneapolis-St. Paul Area

• Developer - Side Project

  • Sep 2018 - Present

  Practical.app (https://practical.app) is a complex food tracking app. The front end is a JavaScript/Vue.js Single Page App, which calls an API I built with Python/Django, backed by a Postgres database. In addition to the web frontend, the app has an Alexa skill (also written in Python) that allows users to control the app with voice commands. The app supports natural language searches such as “half a bag of Cheetos", customizable nutrient display using drag-and-drop, bar code scanning, and support for four languages (English, Czech, German, and Spanish).



GroundCloud

• United States
• Transportation, Logistics, Supply Chain and Storage
• 1 - 100 Employee

• Software Engineer

  • Mar 2020 - Jan 2022

  Designing and implementing routing and package tracking software for FedEx Ground ISPs. Development time was split between the backend system in Python (Django) and the frontend in JavaScript (Vue). Designing and implementing routing and package tracking software for FedEx Ground ISPs. Development time was split between the backend system in Python (Django) and the frontend in JavaScript (Vue).



Datica

• United States
• Software Development
• 1 - 100 Employee

• Frontend Developer

  • Aug 2019 - Nov 2019

  Worked on the REST API written in Go (Golang). JavaScript programming (using the Vue.js framework and Chart.js). Conversion of the site to a responsive design that would work on both desktop and mobile. Database query optimization for the graphing components of the new dashboard. Worked on the REST API written in Go (Golang). JavaScript programming (using the Vue.js framework and Chart.js). Conversion of the site to a responsive design that would work on both desktop and mobile. Database query optimization for the graphing components of the new dashboard.



Target

• United States
• Retail
• 700 & Above Employee

• iOS (Swift) Consultant

  • Nov 2018 - Jan 2019

  Consulted for a Fortune 100 Minnesota company on their customer-facing iOS app. Consulted for a Fortune 100 Minnesota company on their customer-facing iOS app.



Stealth Startup

• London, United Kingdom

• Contractor

  • Dec 2017 - Aug 2018

  Built a system for agents in the field who are using iPhones/iPads devices to do data collection. This was a greenfield project with no existing code, so I built the server infrastructure including database design (Postgres) and designing and programming the API (using Python/Django Rest Framework on Google Cloud). I then built the iOS app for iPhone/iPad that the agents use to add data. Beta was delivered in February 2018 (two months after start of project). System went into wide deployment in June 2018 and is now used by hundreds of agents in five countries in Europe.



Okoli, Inc.

• Prague, The Capital, Czech Republic

• Senior Developer

  • Jun 2016 - Oct 2017

  Okoli (okoli.com) was a platform to re-invent the group tour (a $20bn business) for the 21st century. Instead of large (25+ people) group tours, Okoli planned to organize tours of a maximum of eight people, led by experienced guides. The guides are independent contractors, who pay a small commission to Okoli for organizing the tours. One can think of it as "carpooling for private tours". The customer gets a semi-private tour for the cost of a typical large group tour. I helped develop the original business idea for Okoli, and did all the programming for the site and API (Python), including a bespoke accounting system written in PostgreSQL. I wrote the custom accounting system because we couldn't find an affordable off-the-shelf solution that could handle our complex multi-currency, multi-tax-jurisdiction, and FX gain/loss tracking requirements. Funding is challenging in the tours and activities sector, so Okoli was bootstrapped. Unfortunately, the site never launched.



Zendo, Inc.

• Prague, The Capital, Czech Republic

• Tech Lead

  • Oct 2014 - Jan 2016

  Zendo was a secure messaging app offering true end-to-end encryption using symmetrical keys (almost all secure messaging uses less-secure asymmetrical keys). I wrote the iOS iPhone and iPad apps and managed the programmers building the Android app. I also designed and programmed the server backend (using Node.js and Erlang). TechCrunch called it "their new favorite secure messaging app". You can read the (very long) writeup at https://techcrunch.com/2015/03/24/one-time-pads-ride-again/ Zendo was a secure messaging app offering true end-to-end encryption using symmetrical keys (almost all secure messaging uses less-secure asymmetrical keys). I wrote the iOS iPhone and iPad apps and managed the programmers building the Android app. I also designed and programmed the server backend (using Node.js and Erlang). TechCrunch called it "their new favorite secure messaging app". You can read the (very long) writeup at https://techcrunch.com/2015/03/24/one-time-pads-ride-again/



Nelso

• Prague, The Capital, Czech Republic

• Indie Developer

  • Mar 2007 - Sep 2014

  Nelso was an iOS app and website primarily targeting travelers to/in Europe. The app and site were available in 13 languages. Did all coding related to the website, primarily using Python, Django, and PostgreSQL. After the introduction of the iPhone (and the launch of the iOS SDK in 2008), Nelso changed focus to mobile travel. I wrote all the code for the company's large portfolio of apps for iOS, which had more than 4m downloads in the Apple App Store. Worked with another freelancer to complete the Android ports of the iOS apps. With zero marketing budget, helped build Nelso into one of the leading local search sites in the Czech Republic and Denmark, reaching over 100,000 unique users per month only a few months after launch. On-line marketing was conducted through the Nelso blog, Twitter, Facebook, and viral promotions such as the now-famous Prague beer price map.



France Telecom (Polish subsidiary)

• Consultant

  • Jun 2004 - Jun 2006

  Built a complex e-commerce platform for France Telecom’'s Polish subsidiary, and then launched this platform in eight other languages. All translations were handled by a web-based translation system that I wrote specifically for this project. Site was written primarily in Java (using Tomcat, Hibernate and Struts), and interfaced with a PostgreSQL Unicode database. In addition, made extensive use of RDBMS stored procedures, Ajax, CSS, and XML-based web services (including RSS and Atom). Built a complex e-commerce platform for France Telecom’'s Polish subsidiary, and then launched this platform in eight other languages. All translations were handled by a web-based translation system that I wrote specifically for this project. Site was written primarily in Java (using Tomcat, Hibernate and Struts), and interfaced with a PostgreSQL Unicode database. In addition, made extensive use of RDBMS stored procedures, Ajax, CSS, and XML-based web services (including RSS and Atom).



AlbumCity.com

• CTO

  • Aug 1999 - Oct 2003

  I was a co-founder and CTO of this B2C e-commerce retailer modeled on Amazon.com. Managed a staff in four offices in Central Europe (Prague, Budapest, Bratislava, and Warsaw). I wrote much of the software for a cross-border, cross-language, e-commerce platform. Site was written in Perl and Java, with Oracle as the RDBMS. PL/SQL was used extensively to speed up database operations. U.S. patent was filed for inventions resulting from this development. I helped raise $2.2m from private investors to fund the company'’s operations. After the “bubble” burst in 2000, funding dried up, and AlbumCity.com closed in 2003.



i90 s.r.o.

• Consultant

  • Nov 1997 - Jul 1999

  Web consulting and design. Web consulting and design.



Raiffeisen

• Senior Equity Analyst

  • Jan 1997 - Nov 1997

  Wrote equity research and traveled extensively on behalf of bank, covering the bank’s U.S. and U.K. clients. Won 1997 Wall Street Journal European Analyst Contest. Was widely quoted in international publications including the Economist, New York Times, and The Wall Street Journal. Managed and helped train a staff of five junior analysts. Worked with corporate finance department to bid for new client business. Wrote equity research and traveled extensively on behalf of bank, covering the bank’s U.S. and U.K. clients. Won 1997 Wall Street Journal European Analyst Contest. Was widely quoted in international publications including the Economist, New York Times, and The Wall Street Journal. Managed and helped train a staff of five junior analysts. Worked with corporate finance department to bid for new client business.



Creditanstalt Bankverein

• United States
• Financial Services
• 1 - 100 Employee

• Equity Analyst

  • Jan 1996 - Dec 1996

  Equity analyst covering mostly banks and insurance companies for this large Austrian bank. Equity analyst covering mostly banks and insurance companies for this large Austrian bank.



Odyssey Partners (NYC) Czech Republic Hedge Fund

• Junior Analyst

  • Feb 1994 - Jun 1995

  Researched, and then helped to structure, public and private equity deals in the Czech Republic and Slovakia. Handled many of the reporting requirements arising from the company’s relationship with Odyssey Partners, a $5bn NYC hedge fund. Researched, and then helped to structure, public and private equity deals in the Czech Republic and Slovakia. Handled many of the reporting requirements arising from the company’s relationship with Odyssey Partners, a $5bn NYC hedge fund.