Christoffer Tønnessen
Development, Co-founder at Hyre AS
Oslo, Norway
Summary
👤
Senior🎓
Top SchoolChristoffer Tønnessen is a seasoned full-stack developer and entrepreneur with 13 years building consumer-facing web and mobile products, currently co-founding Hyre to create Norway’s leading car-sharing service. He blends hands-on Python and JavaScript engineering with product-minded leadership, having launched startups like feat.fm and prototyped new digital services at Telenor focused on machine learning and experiment-driven innovation. With an M.Tech in Computer Science from NTNU, he has deep experience across frontend, backend and DevOps stacks, and a history of teaching and mentoring students in foundational programming. Christoffer favors rapid prototyping to validate tech before scale, a practice evidenced by projects such as zombocam.com and musicvideodispenser.com at Telenor. Comfortable managing both code and the operational needs of small teams, he brings pragmatic engineering discipline to early-stage product problems. Based in Oslo, he combines entrepreneurial grit with academic rigor and a track record of shipping impactful, user-facing systems.
13 years of coding experience
4 years of employment as a software developer
Norges teknisk-naturvitenskapelige universitet
Norwegian, English, German
Github Skills (173)
tooling10
swiftpm10
storekit10
in-app-purchase10
google-maps10
certificate-pinning10
public-key-pinning10
receipt-validation10
google-pay10
segment10
urlrequest10
linux10
swift-package-manager10
sdk10
payment10
Programming languages (18)
Github contributions (5)
cristeahub/hvilkenukeerdet
Aug 2015 - Oct 2017
Contributions:4 releases, 38 commits, 11 PRs in 2 years 2 months
stopcalculations
cristeahub/setup
Feb 2015 - Oct 2018
My setup on Macs
Contributions:36 commits, 10 PRs, 23 pushes in 3 years 9 months
macsdotfilesmacoshomebrewzsh
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