Daniel Karlsson, Software Developer in Stockholm, Sweden
Daniel Karlsson

Software Developer in Stockholm, Sweden

Member since May 17, 2018
Daniel is a full-stack developer and co-founder of a startup called Fliffr. Over the past three years, he designed, architected, implemented, and maintained both back-end and front-end software. As a founder, he's driven and a self-starter, and as an employer of freelancers, he knows what goes into good communication at both ends of a remote working relationship. He prides himself on being able to independently solve problems.
Daniel is now available for hire




Stockholm, Sweden



Preferred Environment

Visual Studio Code, Unix, Git

The most amazing...

...thing I've done was found a startup as a technical co-founder. I got to experience the whole product lifecycle.


  • Full-stack Developer

    2019 - PRESENT
    • Architected the back-end and front-end applications.
    • Worked closely and iteratively with clients to deliver products.
    • Improved TDD and CI/CD practices to deliver more stable software.
    Technologies: Ionic 4, Angular, Laravel, Spring
  • Founder/Full-stack Developer

    2015 - 2018
    • Developed back-end and front-end from scratch.
    • Managed product and released the application for Android and iOS.
    • Led business development from a technical standpoint.
    • Worked with B2B partners to build customized white label solutions of the Fliffr tech.
    • Led testing work including setting up workflow and CI.
    Technologies: Cordova, Android, iOS, Django, Ionic, Angular, Go
  • Support Technician

    2011 - 2012
    Stockholm County Council, IT Support in Healthcare
    • Learned how to turn any situation, (almost) no matter how bad, into something positive for the customer.
    • Developed scripts to automate helpdesk work such as troubleshooting and applying simple fixes.
    Technologies: Windows, Azure Active Directory


  • Fliffr

    Fliffr is an application for on-demand help via live video.

    I did front-end and back-end work including integrating WebRTC and Stripe payments and releasing apps for iOS and Android.

  • EagleDial

    A pivot of Fliffr where we used the same underlying technology to create a new offering for a new segment. This project reinforced my Angular 2 skills as well as quickly delivering a completely new front-end application.


  • Languages

    Java, Python, TypeScript, Go, TypeScript 2, CSS3, HTML5, SQL
  • Frameworks

    Angular, Ionic 2, AngularJS, Django, Spring, Laravel, Ionic 4, Ionic
  • Platforms

    Amazon Web Services (AWS), Android, Linux, AWS EC2, Unix, Visual Studio Code, iOS, Windows
  • Libraries/APIs

    WebRTC, Stripe API
  • Tools

    Git, VS Code
  • Storage

    AWS S3, Azure Active Directory, PostgreSQL
  • Paradigms

    Functional Programming, Continuous Integration (CI)
  • Other

    Cordova, AWS DevOps


  • Coursework toward a Bachelor's degree in Computer Engineering
    2012 - 2015
    KTH Royal Institute of Technology - Stockholm, Sweden

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