Carl-Fredrik Arvidson

Carl-Fredrik Arvidson

July 21, 2025

Fullstack developer with over 20 years of experience spanning system administration, operations, and modern web development. I specialize in building scalable, high-performance applications and have a proven track record of transforming legacy systems into modern, efficient solutions that deliver measurable business impact.

Core expertise includes:

  • Performance optimization: Reducing load times from 17 seconds to 1 second, and workflow times from 9 minutes to 2.5 minutes
  • Modern architecture: Cloud-based systems using Node.js, React, AWS, and cutting-edge technologies
  • AI integration: Implementing AI-driven solutions for workflow automation and text generation
  • Quality assurance: End-to-end testing, database migrations, and robust CI/CD pipelines
  • Security-first approach: Developed through experience with high-security organizations

Professional journey:

  1. The Stellar Collective (2024-Present) - Senior Consultant
  2. Code Labs AB (2022-2024) - Fullstack Developer
  3. Sveriges Television (2017-2022) - Platform Developer
  4. Kundo (2017) - Product Developer
  5. Swedish Security Service (2012-2017) - Systems & Development
  6. Swedish Armed Forces (2004-2012) - IT Operations & Development

My experience across government agencies, media companies, and tech consultancies has given me deep insight into building secure, scalable systems that meet the highest standards. I thrive in collaborative environments and excel at both independent problem-solving and team-based development approaches including pair programming and mob programming.

What drives me: Transforming complex technical challenges into elegant solutions, mentoring teams, and delivering software that makes a real difference to users and businesses. I stay current with emerging technologies through continuous learning, conferences, and hands-on experimentation with new tools and methodologies.

Experience

  1. TV4 Consultant​

    Stockholm - Fullstack Developer

    September 2024 - Present

    TV4 needed to modernize their media operations by developing a new in-house media asset management system and media pipeline. They required experienced fullstack development expertise to build this critical infrastructure from the ground up, replacing legacy systems with a modern, scalable solution that could handle their media supply chain needs effectively.

    As a fullstack developer consultant joining TV4's team in September 2024, I contributed to building their next-generation media infrastructure:

    • Developing the first version of a media supply chain system built on Node.js and AWS components such as lambda etc.
    • Worked on creating a comprehensive media asset management system designed specifically for TV4's internal operations
    • Integrated AI-driven solutions that enhanced both personal development workflows and automated text generation as part of the system functionality
    • Headed the implementation of end-to-end testing to verify and maintain high quality standards in a rapidly evolving development and production environment
    • Collaborated with the team to establish a robust media pipeline that could scale with TV4's operational requirements

    My contributions helped TV4 establish a modern media infrastructure foundation:

    • Modern architecture: Successfully delivered the first version of a cloud-based media supply chain system using cutting-edge Node.js and AWS technologies
    • AI integration: Implemented AI-powered features that streamlined media processing workflows and automated text generation, improving operational efficiency
    • Quality assurance: Established comprehensive end-to-end testing protocols that ensured system reliability in a fast-paced development environment
    • Scalable infrastructure: Built a media pipeline architecture that provides TV4 with the flexibility to grow and adapt to changing operational needs

  2. Funnel Consultant​

    Stockholm - Fullstack Developer

    February 2024 - September 2024

    Funnel is a leading marketing intelligence platform that helps companies collect, prepare, and use marketing data from all their channels in one place. They needed experienced development expertise to optimize their existing systems and improve the user experience for digital marketers managing complex data workflows.

    As a fullstack developer consultant joining Funnel's team in February 2024, I contributed to enhancing their marketing data platform:

    • Optimized the existing React-based frontend to improve user experience for marketers working with large datasets and complex reporting interfaces
    • Enhanced backend services built on Node.js to handle increased data processing loads and improve API response times
    • Worked on database optimization and migration strategies to support Funnel's growing data requirements
    • Implemented automated testing and quality assurance measures to ensure reliable data processing for their enterprise clients
    • Collaborated with the team to improve the CI/CD pipeline, making deployments more reliable and reducing time to market for new features

    My contributions helped Funnel improve both performance and reliability:

    • Performance optimization: Successfully improved frontend performance and backend response times, resulting in a better user experience for marketers working with complex data
    • Quality improvements: Implemented testing strategies that reduced bugs and improved confidence in deployments for their enterprise marketing platform
    • Infrastructure enhancement: Contributed to a more robust and scalable platform infrastructure that supports Funnel's growing client base
    • Team collaboration: Worked effectively within their development team to deliver features that directly impact digital marketers' ability to make data-driven decisions

  3. Barnebys Consultant​

    Stockholm - Fullstack Developer

    August 2023 - February 2024

    Barnebys is a leading global marketplace for art, antiques, and collectibles, connecting buyers and sellers from auction houses worldwide. They needed experienced development expertise to optimize performance and improve the user experience for their growing international user base dealing with high-value transactions.

    As a fullstack developer consultant joining Barnebys' team in August 2023, I focused on performance optimization and system modernization:

    • Dramatically reduced page load times from 17 seconds to 1 second by implementing comprehensive performance optimization strategies including code splitting, image optimization, and database query optimization
    • Enhanced the React-based frontend with modern optimization techniques, improving the browsing experience for users searching through millions of auction items
    • Optimized backend services and database queries to handle the platform's large catalog of art and antiques more efficiently
    • Implemented automated testing with Cypress to ensure reliable functionality across the complex auction and bidding workflows
    • Worked on improving the CI/CD pipeline to enable faster and safer deployments for their international marketplace

    My performance optimization work resulted in significant improvements:

    • Dramatic performance improvement: Achieved a 17x improvement in page load times (from 17 seconds to 1 second), directly impacting user engagement and conversion rates
    • Enhanced user experience: Improved the browsing and bidding experience for collectors and auction house clients using the platform
    • Quality assurance: Implemented comprehensive testing that reduced bugs and improved confidence in deployments for high-stakes auction transactions
    • Technical modernization: Established a foundation for continued performance improvements and modern development practices

  4. Clean Cut Consultant​

    Stockholm - Fullstack Developer

    August 2022 - August 2023

    Clean Cut is a Swedish skincare company that specializes in personalized skincare solutions. They needed development expertise to enhance their digital platform that helps skin therapists create customized treatment recommendations for their clients. The existing system was slow and cumbersome, requiring significant optimization to improve the user experience for both therapists and customers.

    As a fullstack developer consultant joining Clean Cut's team in August 2022, I focused on performance optimization and workflow improvement:

    • Optimized the recommendation engine workflow, reducing the time for skin therapists to create personalized recommendations from 9 minutes to 2 minutes and 30 seconds
    • Enhanced the React-based frontend to provide a more intuitive and responsive interface for skin therapists working with client data
    • Improved backend performance through database optimization and more efficient data processing algorithms
    • Implemented database migrations to ensure safe and reliable database changes
    • Implemented end-to-end testing with Cypress, providing regression tests that made it safer to work with the complex legacy codebase
    • Extended my support to sister company Kicks by helping the test team implement more Behaviour-Driven Development (BDD) tests using Python and Gherkin
    • Containerized the test environment with Docker to create a more robust and user-friendly development environment

    My efforts resulted in dramatic improvements in both performance and quality:

    • Efficiency increase: Reduced the time for skin therapists to create recommendations from 9 minutes to 2 minutes and 30 seconds, directly impacting company productivity and customer satisfaction
    • Technical modernization: Established a secure and scalable foundation for future development through implementation of database migrations and automated testing
    • Quality assurance: The Cypress implementation reduced the risk of regressions and made it possible to work more confidently with the complex codebase
    • Organizational impact: Created conditions for more robust test automation within Kicks as well, improving the development process for the entire corporate group

  5. Code Labs AB Consultant​

    Stockholm - Fullstack Developer

    November 2022 - July 2024

    • I joined the team at codelabs.se as a consultant in november 2022.
    • Technologies: Node.js, React, Next.JS, MySQL/Postgres, Type-ORM, Redux
    • Deployment on Vercel and AWS using CircleCI and Github Actions

  6. Sveriges Television ​

    Stockholm - Fullstack Developer

    December 2019 - November 2022

    • In December 2019, I joined the News and Sports team at Sveriges Television
    • Developing a new platform for live reporting
    • Technologies: Node.js, React, Firebase/Firestore, Knex, MySQL
    • Deployment on Heroku, Google Cloud Platform and Firebase

  7. Sveriges Television ​

    Stockholm - Fullstack Developer

    December 2017 - December 2019

    • In December 2017, I joined the Developer Experience team at Sveriges Television
    • Mission: Make SVT the best place for developers to do great work
    • I worked with all teams to help them build better software faster
    • I created development tools, libraries and deployment pipelines to help developers get work done
    • Technologies: Node.js, React, Amazon Web Services, CircleCI, Docker, Firebase, Serverless Framework, Terraform

  8. Kundo ​

    Stockholm - Product Developer

    February 2017 - December 2017

    • In February 2017, I joined the product team at Kundo (Help Scout) to build customer service platform that companies can embed into their website
    • I worked full-stack development for the product team to build new features and improve existing functionality
    • Technologies: Node.js, React, Firebase, Google Cloud Platform

  9. Swedish Security Service ​

    Stockholm - Systems Developer

    2015 - 2017

    2015-2017: Systems Developer at the Swedish Security Service, Stockholm

  10. Swedish Security Service ​

    Stockholm - Systems Engineer

    2012 - 2015

    2012-2015: Systems Engineer at the Swedish Security Service, Stockholm

  11. Swedish Armed Forces ​

    Uppsala - Systems Engineer

    2007 - 2012

    In August 2007, I started as a Systems Engineer at the Military Garrison in Uppsala. I was part of the team that supported the Swedish Operational Command, which was based in Uppsala at the time.

    Daily work consisted of server operations, network and security management and project support to civilian consultants and colleagues. I was responsible for the Microsoft System Center Configuration Manager servers that was used to deploy software and updates to the workstation computers in Uppsala.

    I went through additional security training to get higher security clearance to help support the classified networks that was used within the Swedish Operational Command.

  12. Swedish Armed Forces Consultant​

    Uppsala - Support Technician

    2005 - 2007

    In October 2005, I started as a IT-Support Technician at the Military Garrison in Uppsala. I was part of the team that supported the Swedish Operational Command, which was stationed in Uppsala at the time.

    Although I mainly worked with the unclassified infrastructure, I went through additional training on handling classified material and equipment.

  13. Swedish Armed Forces ​

    Stockholm - Conscript

    2004 - 2005

    In July 2004, I began my basic military training at the Karlskrona Naval Base. After the 8 weeks of basic training and an additional leadership training course we moved from Karlskrona to the Swedish Military Headquarters in Stockholm.

    The daily activities consisted of user support, logistics, user training, server and network management, IT security and a final individual project. We worked side by side with both employees of the Armed Forces and Consultants. We had the daily support responsibility for one of the floors of the Headquarters in Stockholm.

    My final project consisted of the development of a Light Touch Deployment Server, used for remote installation of Microsoft Windows XP clients. The server was later taken into production and used on the Internet LAN at the Operational Command in Uppsala. I left the Swedish Armed Forces after my 15 months conscription was over as a Sergeant, with the final mark of 10–8–9 out of 10–9–9.

Training & Certifications

    • SANS Security 561: Intense Hands-on Pen Testing Skill Development. Las Vegas USA
    • HP ArcSight ESM Administrator 6 CORR Engine. London UK
    • SANS Security 504: Hacker Techniques, Exploits and Incident Handling, Amsterdam Netherlands
    • Dell Compellent Storage Area Network, Minneapolis USA
    • 5 day Malware FBI lead course, in-house at the Swedish Security Service, Stockholm
    • VMware Infrastructure 3 Fast Track Program
    • Managing and Maintaining a Windows Server 2003 Environment
    • Mastering Microsoft System Center Configuration Manager 2007 SP2 R2 and R3
    • Programming with C# Using Microsoft.NET Framework 4
    • ITIL Introduction
    • Service management
    • Basic Combat Training by the Swedish Armed Forces
    • Crypto and Security Training by the Swedish Armed Forces

Education

Katedralskolan, Uppsala, Sweden​, 2004 - High school

References

Available upon request.