Johan Book
Software Engineer at Cirrus CRM
Malmo, Sweden
Summary
👤
Senior🎓
Top SchoolJohan Book is a full-stack software engineer based in Malmö with 10 years of experience building performant, user-focused web applications and backend systems. He has driven high-impact improvements—rebuilt interactive charts to handle over 500k data points, boosted web-tracking performance by 25%, and migrated legacy codebases to TypeScript to reduce regressions. Comfortable across networking, databases, and frontend interactions, he combines a research mindset from a theoretical physics background with hands-on product delivery at startups and consultancies. Johan also co-founded an AI startup for grading handwritten math exams and has worked on self-service AI model tooling, reflecting a blend of entrepreneurial initiative and applied ML experience. Outside work he studies Mandarin and writes, bringing curiosity and discipline to complex engineering problems.
10 years of coding experience
5 years of employment as a software developer
Service, Service at SG AcademyMaster of Science - MS, Theoretical Physics, Master of Science - MS, Theoretical Physics at Lunds universitetFreestanding courses, Filosofi, Freestanding courses, Filosofi at Uppsala universitetSpanish, Spanish at EF
Swedish, English, Spanish, Chinese, Danish
Stackoverflow
163reputation
25kreached
2answers
7questions
Github Skills (200)
openapi10
api10
api-server10
nodejs10
api-client10
rest-api10
cqrs10
http-proxy-middleware10
rest-client10
openapi-generator10
sdk10
rest10
spec10
restful-api10
generator10
Programming languages (10)
Github contributions (5)
johanbook/smhi-analysis
Oct 2017 - Jul 2019
Contributions:29 PRs, 121 pushes, 13 branches in 1 year 9 months
johanbook/dotfiles
Oct 2019 - Jan 2025
My personal setup for Vim, tmux and Sway. Check it out!
Contributions:1 PR, 126 pushes, 1 branch in 5 years 4 months
dotfilesswayvim
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