toptal.com
Contact us: +1.888.867.7001
Ken Hoffman, Full-stack Developer in Chandler, AZ, United States
Ken Hoffman

Full-stack Developer in Chandler, AZ, United States

Member since August 15, 2018
Ken has over 20 years of experience as an independent contractor providing application development services to his customers. For the last 12 years, he has developed applications on the .NET platform. Ken's motivation to deliver value-added solutions and pull projects through to completion has earned him the respect of his clients, resulting in long-term relationships.
Ken is now available for hire
Hire Ken

Portfolio

Experience

Location

Chandler, AZ, United States

Availability

Part-time

Preferred Environment

Git, Visual Studio

The most amazing...

...project I've worked on as the primary architect and developer was an application used extensively by the sales force of a major corporation.

Employment

  • Full-stack Web Developer

    2016 - PRESENT
    Northrop Grumman Innovation Systems (Contractor)
    • Cooperated with a team on creating an initial concept to obtain project approval and funding.
    • Developed a full-stack solution for an application and its supporting processes.
    • Implemented robust security measures to meet the Department of Defense's standards and requirements.
    • Created an administrative module with complex user roles.
    Technologies: Bootstrap, Microsoft SQL Server, ASP.NET, .NET, .NET 4

  • Full-stack Web Developer

    2006 - PRESENT
    Trelleborg Corporation (Contractor)
    • Created an eCommerce portal to automate and track online requests for quotes and purchase orders from high-value customers.
    • Constructed a product database application that enables the full management and multi-tiered pricing of multiple product catalogs.
    • Implemented a reporting system to generate various accounting and sales reports based on the activity on the site.
    • Provided full-stack development for the creation and maintenance of an eCommerce portal and its supporting applications.
    • Collaborated with the management on identifying value-added improvement opportunities.
    Technologies: Microsoft SQL Server, ASP.NET, .NET, .NET 4, eCommerce

  • Full-stack Web Developer

    2000 - PRESENT
    Dataforth Corporation (Contractor)
    • Provided full-stack development of an enterprise website.
    • Managed several migrations to new generations of site features and capabilities.
    • Created a system configuration tool that enables customers to build, configure, and price data acquisition systems.
    • Implemented the use of Bootstrap in a website to facilitate a responsive UI.
    • Constructed sync processes that allow the site to perform real-time sync with an email marketing database, using REST API.
    Technologies: Bootstrap, Python, Microsoft SQL Server, ASP.NET, .NET 4, ASP, UI, REST APIs

  • Solution Architect and Developer

    2019 - 2021
    Freelance Application Developer
    • Constructed an app that allows superintendents to manage the team's assignments, allowing team members to track progress as well as track and submit timecards.
    • Built a back end to integrate multiple third-party services with an ERP system via API integration.
    • Created an API to expose the features of the application.
    • Developed ASP.NET MVC front end utilizing the Bootstrap theme.
    • Cooperated with the client's team from inception to production to capture business needs, evaluate feedback, and optimize overall utilization and acceptance.
    Technologies: .NET Core, JavaScript, SQL Server 2016, ASP.NET MVC, C#

  • ASP.NET Developer for Website Revamp

    2018 - 2019
    Air-Tite Products (via Toptal)
    • Created a custom search tool that integrated with the existing AspDotNetStorefront platform.
    • Facilitated the reskin of an existing AspDotNetStorefront site.
    • Participated in the lightning start process to create the initial proposal and scope of work.
    • Managed, as a lead developer, the development team, using an agile environment during the 10-week project.
    • Interacted and communicated with the client to understand the project goals and requirements fully.
    Technologies: AspDotNetStorefront, C#.NET, ASP.NET MVC, .NET, .NET 4

  • Software Developer

    2002 - 2018
    Leading Semiconductor Manufacturer (Contractor)
    • Developed a Windows desktop application to provide the worldwide sales force with a product data repository, search, and presentation capabilities.
    • Improved an application and enabled it to function without an internet connection, with a sync utility that updates all data and content when the network connection was available.
    • Integrated several product search tools for a wide variety of semiconductor product offerings.
    • Created a presentation system to autogenerate sales presentations from structured data and account for a wide variety of screen and projector sizes.
    • Built several back-end batch processes to automate data transformation from a range of sources to a common snapshot for client-sync availability.
    Technologies: Microsoft Access, ASP.NET, VB.NET, .NET, .NET 2, Xamarin, C#

Experience

  • ASP.NET Core - Workflow Automation Application

    Developed an ASP.NET Core 2.2 application that manages and automates the workflow processes of a language translation company. This application integrates with multiple external APIs and automates workflow assignments and messaging.

  • ASP.NET MVC - Corporate Training Application

    Developed a training application for a large corporation using ASP.NET MVC, SQL Server, and SCORM Cloud API. The application is equipped with both administration and learner interfaces that constitute a complete online training platform.

  • Data Acquisition System Builder
    https://www.dataforth.com/data-acquisition-system-builder.aspx

    Created a data acquisition system builder application that guides users through the creation of a viable data acquisition system.

  • Air-Tite Website Redesign and Search Tool
    https://www.air-tite-shop.com/

    As the lead developer for a Toptal project for Air-Tite, I redesigned the company's website. This project included direct communication with the client to fully understand the project goals and requirements. As part of this project, I developed a custom search tool that integrated with the existing eCommerce platform, using AspDotNetStorefront.

  • Real-time Interactive Demo

    I created a demonstration page on an ASP.NET website that enabled users to experience real-time feedback of a data acquisition system. This system included a live, low-latency video stream, and HTML5 interactive controls. I created a Python server component to interface with the hardware system API.

  • RMA Module

    I developed an online return merchandise authorization (RMA) feature on an existing website and integrated it with the existing user and admin roles database. The feature tracks RMAs through the entire process and makes status updates available at all times in both the customer and admin views.

  • Sync Feature

    I developed a synchronization feature for a desktop application. The network-aware sync feature managed data, collateral incremental updates, and feedback data to the server.

Skills

  • Languages

    Python, C#.NET, Visual Basic .NET (VB.NET), C#, SQL, HTML5, JavaScript, VB.NET, Java, Python 3

  • Frameworks

    ASP.NET Web API, ASP.NET, ASP.NET MVC, .NET 4, ASP.NET Web Forms, ASP.NET Core, .NET, ASP, Bootstrap, AngularJS, .NET 2, .NET Core, ASP.NET Core 2

  • Tools

    Visual Studio, AspDotNetStorefront, Git, Microsoft Access

  • Platforms

    Android, Windows, Azure, Xamarin

  • Other

    IIS, Software Development, eCommerce, UI, Data, Applications, Full-stack

  • Storage

    SQL Server 2016, Microsoft SQL Server, Jet SQL

  • Libraries/APIs

    REST APIs

  • Paradigms

    SCORM

Education

  • Bachelor of Science Degree in Mechanical Engineering
    1988 - 1989
    University of Arizona - Tucson, AZ

To view more profiles

Join Toptal
Share it with others
Hire the top 3% of freelance developers TM