Thomas Marstrander - Principal Software Developer at H5P Group AS

Thomas Marstrander

Principal Software Developer at H5P Group AS

Tromsø, Troms og Finnmark, Norway

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Summary

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Senior

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Thomas Marstrander is a Principal Software Developer at H5P Group AS, guiding system design, scalability, and AI-powered tool integration across the H5P ecosystem. With over a decade in the internet industry, he helped found H5P Core and its CMS integrations (Drupal, WordPress, Moodle) and led the SaaS platform H5P.com and an Open Educational Resources Hub. He specializes in full-stack development with a strong emphasis on generative AI services, Node.js/TypeScript/NestJS, and AWS infrastructure (ECS, CDK, Redis, S3, DocumentDB, Fargate). His open-source contributions include back-end work on the Moodle/H5P plugin to enable mobile support and front-end improvements for the interactive video player, enhancing accessibility and cross-device behavior. Based in Tromsø, Norway, he holds a master's degree in Computer Science with a specialization in Intelligent Systems from NTNU and regularly translates user feedback into robust, scalable solutions for millions of learners.

11 years of coding experience

Norwegian University of Science and Technology

English, Norwegian, Spanish

Stackoverflow

Stats

46reputation

2kreached

7answers

0questions

Github Skills (17)

javascript10

css10

user-interface10

userinterface10

php10

javascripts10

api-doc9

accessibility9

responsive-design9

api9

database-management8

html8

actionscript6

wordpress6

jquery6

Programming languages (5)

CSSShellJavaScriptPHPJupyter Notebook

Github contributions (5)

h5p/moodle-mod_hvp

Mar 2017 - Dec 2022

H5P Plugin for Moodle

Role in this project:

Back-end Developer

Contributions:3 reviews, 211 commits, 68 PRs in 5 years 9 months

Contributions summary:Thomas's commits primarily focused on integrating mobile application support into the H5P Moodle plugin. They implemented changes in `classes/external_functions.php` and `classes/view_assets.php` which points toward integrating core assets and settings for the mobile view. The changes also included modifying the database schema to store mobile authentication tokens, and adding code for a content hub. Overall, the contributions are centered on expanding the plugin's functionality to support mobile devices.

h5p-pluginbackbonejsmoodleemacs-packagesh5p

h5p/h5p-interactive-video

Sep 2019 - Oct 2022

Role in this project:

Front-end Developer

Contributions:25 commits, 13 PRs, 289 pushes in 3 years 1 month

Contributions summary:Thomas primarily contributed to the user interface and functionality of the interactive video player. Their work included changing the DOM order of elements, fixing styling issues for end-screen buttons and seek bar marks, and adding accessibility improvements. They also addressed issues with the display and behavior of the player on different devices, and they added functionality to the video player.

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