Terje Karlsen
Developer at Systek AS
Oslo, Norway
Summary
👤
Senior🎓
Top SchoolTerje Karlsen is a seasoned web developer based in Oslo with nine years of professional experience building production-grade Next.js, React and Node.js applications. He combines strong front-end craftsmanship—TypeScript, CSS Modules, React Testing Library—with practical backend skills in REST, GraphQL, Docker and CI/CD using GitHub Actions. At Systek he pairs hands-on coding with user research and accessibility work, collaborating directly with NAV’s accessibility team to design, code and test features before release. Previously he has led technical teams and driven UX and information architecture at agencies, giving him a rare blend of product-minded engineering and people leadership. Outside work he’s known to enjoy running and whiskey, a small clue to his discipline and taste for thoughtful downtime.
9 years of coding experience
20 years of employment as a software developer
BIMI
Norwegian, English
Stackoverflow
53reputation
18kreached
0answers
1question
Github Skills (25)
javascript10
nav10
css10
typescript10
tailwindcss10
frontend10
react10
storybook9
gdpr9
exchange7
jestjs6
ros6
mocking6
security6
unit-testing6
Programming languages (4)
Github contributions (5)
terjeofnorway/NationalIDValidator
Jan 2020 - Apr 2021
Helper collections for validating and creating mock national ID numbers.
Contributions:8 releases, 10 PRs, 40 pushes in 1 year 3 months
national-idnationalvalidationtestingmock
navikt/navno-search-frontend
Mar 2023 - Apr 2025
Frontend for søk på nav.no
Contributions:7 releases, 25 reviews, 19 PRs in 2 years 1 month
reactfrontendnav
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