About

Work Experience

• Founder / Consultant, Taserud Consulting AB

  Aug, 2023 - Present

  I founded Taserud Consulting to provide specialized consulting services in backend development and DevOps with a focus on NixOS if the customer is open to that choice. Otherwise I'll work with any Linux distribution.

  I'm also working with backups, reproducible builds, CI/CD pipelines, high availability, security through reproducibility and testability.

• Senior / Lead Backend Developer, TV.nu Sweden AB

  Apr, 2016 - Present

  I started at TV.nu as a Senior Backend Developer and progressed into a Lead role. My team is responsible for maintaining the core API and infrastructure, ensuring high availability, and ingesting data from multiple third-party sources.

  I also led key migrations to modernize the backend and improve system performance.

  • Introduced TLS termination and HTTPS with HAProxy, securing user data and improving trust and high availability entry to the systems.

  • Upgraded the entire system from PHP 5.5 to 8.1, resulting in significant performance improvements.

  • Pioneered a modular front page API to allow for different data types to be rendered depening on user selection and client capabilities to render different versions of different content.

  • Implemented Docker across all environments to streamline development and deployment.

  • Led migration from legacy infrastructure to containers on Kubernetes.

  • Managed a zero-downtime migration of MySQL to MariaDB 10.6, improving database performance and scalability.

• Web Developer at Shopello, Shopello International AB / 203 Brands AB

  Apr, 2014 - Apr, 20162 years

  At Shopello, I developed and maintained a shopping search engine, handling ingestion of large datasets and working on API improvements to better handle high traffic.

  • Pioneered a new API for scaling faster while maintaining data integrity with signed links.

  • Introduced XML file streaming to handle large datasets more efficiently.

• Web Developer / Server Admin, Tailor Store Sweden AB

  Nov, 2011 - Apr, 20142 years 5 months

  I maintained the main website and admin systems, along with managing servers and the office network. My contributions played a key role in improving the overall system reliability and performance.

  • Led purchases and setup of new server infrastructure with HAProxy for high availability.

  • Designed a flexible product design API that’s still in use today.

  • Handled upgrades from PHP 5.3 to 5.4, ensuring smooth transitions with no downtime.

• Cluster builder, South Pole AB

  Sep, 2011 - Nov, 20112 months

  Short time contract to assemble computer clusters for universities in Sweden with more than 400 computers per cluster.

• Web Developer, Webhallen Sverige AB

  Jan, 2011 - Aug, 20117 months

  I maintained the main website and admin systems, along with managing servers and the office network. My contributions played a key role in improving the overall system reliability and performance.

  • Key role in implementing imports of data sheets from external systems.

  • Key role in implementing DLC product keys for game purchases.

• IT-Support / Web Admin / Web Developer, Clinicbuddy ekonomisk förening

  Mar, 2010 - Nov, 20108 months

  Most of my work was to answer phone calls to support the software in a Windows environment. I were also part of bootstrapping the development of a new web-based project for future endeavors.

Projects Experience

• NixOS Advocate, NixOS

  Jul, 2017 - Present

  I’ve been an active contributor to the NixOS community since 2017, maintaining packages and advocating for the use of NixOS in production environments.

  I've also authored blog posts and contributed to modular PHP builds and bootstrapped overlays like the Emacs overlay.

  • Maintained core PHP packages.

  • Contributed to the Emacs overlay project.

  • Published the well-known blog post 'NixOS ❄: tmpfs as root'.

  • Written about ZFS and backups.

Skills

Education

Certificates

Volunteer Work

Interests