Dan Borstelmann, Full-stack Developer in St. Louis, MO, United States
Dan Borstelmann

Full-stack Developer in St. Louis, MO, United States

Member since November 6, 2018
Daniel has worked in startups and enterprise companies doing full-stack web and mobile development for the last five years. He is passionate about quality software, valuable user experience, and team delivery of great products. As a freelancer, Daniel uses the best practices he has learned to help his clients achieve their goals.
Dan is now available for hire


  • Slalom
    Amazon Web Services (AWS), Salesforce, Heroku, Django, Vue, React Native...
  • TopOPPS
    iOS, Mobile, Cordova, Salesforce, Django, Backbone.js, Heroku, PostgreSQL...



St. Louis, MO, United States



Preferred Environment

Visual Studio Code, Atom, GitHub, Linux, MacOS

The most amazing...

...project I've worked on was a CRM to help improve services for the homeless in St. Louis with the end goal of eliminating homelessness.


  • Software Engineer Consultant

    2017 - PRESENT
    • Built large-scale applications for numerous clients throughout the St. Louis area.
    • Worked with teams, internal and external, to deliver great products.
    • Worked in modern technology stacks to provide clients with the most up to date platforms.
    • Designed enterprise level systems and data architectures.
    • Helped train new generations of engineering talent in the St. Louis community.
    Technologies: Amazon Web Services (AWS), Salesforce, Heroku, Django, Vue, React Native, React, PostgreSQL, SQL, Python, JavaScript
  • Software Engineer

    2014 - 2017
    • Built clean UIs in the best technology available.
    • Built reusable application code to improve the efficiency of our engineering team.
    • Worked with other members on the team to build full-stack web and mobile applications.
    • Worked to integrate with other services, such as Salesforce, to increase the value of our product.
    • Developed full solutions across the whole stack and take ownership of delivering full features, from front-end to back-end.
    Technologies: iOS, Mobile, Cordova, Salesforce, Django, Backbone.js, Heroku, PostgreSQL, Python, JavaScript


  • Underscore Templating for Atom

    I realized there was no syntax highlighter for Underscore templates in Atom, so I decided to build one! I developed it using Atom's easy extensibility process. Now developers using Underscore's templating system can more efficiently develop HTML files with data.


  • Languages

    HTML, CSS, SQL, Python, JavaScript, Objective-C, GraphQL, Swift, TypeScript, CoffeeScript, C++, Java
  • Frameworks

    Bootstrap, Django, Express.js, React Native
  • Libraries/APIs

    Backbone.js, Vue, React, Node.js
  • Paradigms

    REST, Agile
  • Platforms

    Mobile, Heroku, MacOS, Linux, Visual Studio Code, Salesforce, iOS, Amazon Web Services (AWS), Amazon EC2
  • Storage

    PostgreSQL, Amazon S3 (AWS S3)
  • Other

    APIs, Full-stack, Front-end, Back-end, User Experience (UX), User Interface (UI), Module Development, Amazon Route 53, Cordova
  • Tools

    Amazon CloudFront CDN, GitHub, Atom


  • Bachelor of Science Degree in Computer Science, Architecture
    2012 - 2016
    Washington University in St. Louis - St. Louis, Missouri

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