Anders Johnsen
CTO Angel Investor at Cernel
Aarhus, Central Denmark Region
Summary
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Rockstar🎓
Top SchoolAnders Johnsen is a seasoned software leader and CTO with 11 years of experience building embedded systems, infrastructure, and developer-facing platforms from startups to large tech firms. He co-founded Toit and Rig.dev, led pioneering work on microcontroller programming and Dart VM integrations at Google, and drove scalable infrastructure projects at Uber. Anders blends hands-on low-level systems engineering—evidenced by contributions to the Toit microcontroller language including TLS and OS-specific fixes—with strategic leadership as CTO and director-level roles. Based in Aarhus, he now invests and leads technology at Cernel, applying product-minded engineering to early-stage ventures. Notably, his background spans both embedded IoT toolchains and large-scale distributed systems, a rare combination that enables pragmatic end-to-end solutions.
11 years of coding experience
15 years of employment as a software developer
Aarhus UniversityHTX Viby
Stackoverflow
616reputation
20kreached
16answers
0questions
Github Skills (17)
c-language10
sys10
embedded10
cprogramming-language10
cmake9
mtls8
windows8
libtls8
tls138
tls128
esp327
stream6
dart6
routes6
server-side6
Programming languages (9)
Github contributions (5)
toitlang/toit
Dec 2021 - Dec 2021
Program your microcontrollers in a fast and robust high-level language.
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:6 reviews, 10 commits, 21 PRs in 11 days
Contributions summary:Anders contributed to the Toit project by implementing and modifying core system functionalities related to microcontroller programming. Their commits include adding build actions, fixing file reading on Windows, and incorporating support for TLS server sockets. They also focused on low-level system aspects, evident through changes in file system handling and OS-specific implementations, demonstrating a strong understanding of the target platform's architecture.
high-levellanguage-levelembeddedhigh-level-languagemicrocontrollers
andersjohnsen/servo
Apr 2021 - Dec 2023
Contributions:2 releases, 1 review, 2 PRs in 2 years 8 months
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