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I'm a developer specialising in web technologies, education, and design. I bring front-end engineering together with creative design to build tools that look great and work smoothly. I'm fluent in Japanese - having taught English and maths at an international school in Tokyo, and have produced films in California. I primarily work with JavaScript, Vue, CSS, and a variety of backend technologies (SQL, MongoDB, Node.js) and create my multimedia assets using Illustrator, Photoshop, Premiere Pro, After Effects, and Articulate Storyline to bring you engaging educational and other online content. I also automate processes and do data wrangling/visualisation across Google and Microsoft platforms using Azure, Alteryx, Node.js, Excel VBA, Power Platform, and Google Apps Script.…I'm a developer specialising in web technologies, education, and design. I bring front-end engineering together with creative design to build tools that look great and work smoothly. I'm fluent in Japanese - having taught English and maths at an international school in Tokyo, and have produced films in California. I primarily work with JavaScript, Vue, CSS, and a variety of backend technologies (SQL, MongoDB, Node.js) and create my multimedia assets using Illustrator, Photoshop, Premiere Pro, After Effects, and Articulate Storyline to bring you engaging educational and other online content. I also automate processes and do data wrangling/visualisation across Google and Microsoft platforms using Azure, Alteryx, Node.js, Excel VBA, Power Platform, and Google Apps Script.

Matteus Gaarder

Web Developer, Front-End Developer, Back-End Developer, +7

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I'm a developer specialising in web technologies, education, and design. I bring front-end engineering together with creative design to build tools that look great and work smoothly. I'm fluent in Japanese - having taught English and maths at an international school in Tokyo, and have produced films in California. I primarily work with JavaScript, Vue, CSS, and a variety of backend technologies (SQL, MongoDB, Node.js) and create my multimedia assets using Illustrator, Photoshop, Premiere Pro, After Effects, and Articulate Storyline to bring you engaging educational and other online content. I also automate processes and do data wrangling/visualisation across Google and Microsoft platforms using Azure, Alteryx, Node.js, Excel VBA, Power Platform, and Google Apps Script.…I'm a developer specialising in web technologies, education, and design. I bring front-end engineering together with creative design to build tools that look great and work smoothly. I'm fluent in Japanese - having taught English and maths at an international school in Tokyo, and have produced films in California. I primarily work with JavaScript, Vue, CSS, and a variety of backend technologies (SQL, MongoDB, Node.js) and create my multimedia assets using Illustrator, Photoshop, Premiere Pro, After Effects, and Articulate Storyline to bring you engaging educational and other online content. I also automate processes and do data wrangling/visualisation across Google and Microsoft platforms using Azure, Alteryx, Node.js, Excel VBA, Power Platform, and Google Apps Script.

Available to hire

I’m a developer specialising in web technologies, education, and design. I bring front-end engineering together with creative design to build tools that look great and work smoothly. I’m fluent in Japanese - having taught English and maths at an international school in Tokyo, and have produced films in California.

I primarily work with JavaScript, Vue, CSS, and a variety of backend technologies (SQL, MongoDB, Node.js) and create my multimedia assets using Illustrator, Photoshop, Premiere Pro, After Effects, and Articulate Storyline to bring you engaging educational and other online content.

I also automate processes and do data wrangling/visualisation across Google and Microsoft platforms using Azure, Alteryx, Node.js, Excel VBA, Power Platform, and Google Apps Script.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Japanese

Fluent

English

Fluent

Work Experience

AI Data Contributor at Postwork Labs

September 1, 2025 - Present

Complete coding projects across a range of technical domains, producing high-quality and well-documented code designed to support the training of frontier AI systems. Apply problem-solving and programming skills to deliver efficient solutions aligned with project specifications. Ensure accuracy, consistency, and clarity of code outputs to contribute to robust, real-world AI training data.

eLearning Developer at PwC

September 1, 2023 - March 31, 2025

Leverage Adobe Creative Suite and Articulate Storyline to design and author eLearning materials. Produce multimedia assets, implement custom features and functionality with JavaScript, and maximize engagement and interactivity in eLearning experiences. Integrate AI, automation, and tech solutions in workflows – reducing administrative burden and increasing time for creative work.

Localisation Tester at Testronic

July 1, 2021 - September 30, 2023

Final-stage quality assurance for AAA games, ensuring release-ready products free from bugs, UX/UI issues, and language inconsistencies. Collaborate with international teams to expedite bug resolution – cross-reference Japanese/English scripts and communicate with translators to guarantee language accuracy. Use Excel and JIRA for streamlined issue tracking.

Project Moderator at TransPerfect

November 1, 2022 - May 31, 2023

Facilitate structured data collection sessions for a range of AI and assistant products. Deliver clear, actionable instructions to participants, ensuring high-quality data output aligned with client standards.

Assistant Language Teacher at JET Programme

August 1, 2015 - August 31, 2018

Prepare learning materials, supervise school events, and organize cultural events. Elected Head Teacher of English Club and Cultural Exchange Ambassador. Originate mathematics and science curriculum for international students.

Film Production Instructor at Digital Media Academy (DMA)

July 1, 2015 - August 31, 2015

Help students with professional cameras and editing software. Hired by programme director for demonstrating outstanding achievements in film production.