Lance Helsten Email & Phone Number

Freelance mobile (iOS, iPadOS, watchOS) full stack engineer.Languages, Programming: Python, C, Swift, Objective CLanguages, Modeling: UML 3.0Languages, Markup: YAML, JSON, XML, RDFDatabases: PostgreSQL, SQLiteComputational: NumPy, SciPy, Pandas, Mathematica, MATLABPlatforms: macOS, iOS, GNU/LinuxI designed and released MovieQuote for the iPod/iPhone, which.

Waltham, Massachusetts, US

• Micro-Fulfillment eGrocery Solutions
• Upgraded assortment management from Snowflake DB to Spanner DB.
• Upgraded multiple services to send change information to GCP Bigtable.
• Upgraded decanting service to work with new Purchase Order system and update other services through GCP messaging.
• Upgraded decanting service to use improved authentication and authorization system.
• Wrote Apigee API for assortment management service and decanting service.

Boston, Massachusetts, US

• Generative and Predictive AI
• Architected new paradigm in looking at service layers, cross cutting subsystems, and data model to aid in decoupling services to improve reliability.
• Optimized database normalization of COVID-19 information for analysis of disease propgration.
• Upgraded logging to generate consistent log information from all services.

• Generative and Predictive AI
• Designed and built client library to simplify use of Zeff AI backend.

• Net Promoter Score for small businesses
• Designed and built automated service to gather Net Promoter Score through SMS messages for small businesses.

Midvale, UT, US

• Tools: Objective C, Swift, Python, XCode, macOS, iOS, tvOS, JSONFrameworks: CoreData, CoreAnimation, CoreGraphics, AVKit, AVFoundation, MediaPlayer, Localization
• Rebuild provisioning and initial setup system,
• Custom server authentication proxy for iOS media player at the socket layer,
• Led separation of model and controller code to allow use in iOS and tvOS,
• Created proof of concept access application for tvOS,
• Automated UI testing to allow quicker releases to AppStore.

Draper, UT, US

Skills & Tools: Objective-C, Swift, Python, Xcode, macOS, iOS, and Scrum.Team lead for the MacOS backup client with the primary mission to improve user online backup and restore experience.Lead the team in moving from ad hoc project management to Scrum. Acted as the Scrum Master for the first six months of the transition, and then mentored two other team.

Huntsville, AL, US

Skills & Tools: Java, J2EE, Python, SQL, WSDL, SOAP, REST, PostgreSQL, Oracle, SQLServer, and Scrum.Founding member of internal startup team to create Avocent Management Platform (AMP). Principally responsible for the authorization (AMPAuthz) system.I architected and engineered AMPAuthz system from original Role Based Access Control mathematical principles.

Orem, UT, US

I primarily taught the Foundations of Computer Science course required as a first year course for Computer Science majors, and as an elective for non Computer Science majors to learn programming. I changed the course to use Python as the first programming language learned by the students.

Skills & Tools: Tomcat, GIS, and eXtremeProgramming.Early hire engineer for startup that was creating the Geode; a GPS for the Handspring Visor that would provide location information on custom maps.Let the team responsible for the conversion of raw GIS data to our data format. From this custom maps could be created and delivered to users for use on the.

US

Skills & Tools: C/C++, Python, and eXtreme Programming.

Bloomington, MN, US

Arlington, Virginia, US

1/19 SFG(A)

Randolph AFB, TX, US

• 419 FW, F-16 Crew Chief, Craftsman (7) Level
• Maintained aircraft, support equipment, forms, and records.
• Supervised other technicians performing maintenance tasks on aircraft.

M.S., Computational Engineering And Science

Bs, Computer Science

Bs, Mathematics