Christoffer Järnåker
Tech Lead, IT Architect at Proxmea AB
Stockholm, Sweden
Summary
👤
Senior🎓
Top SchoolChristoffer Järnåker is a seasoned tech lead and IT architect based in Stockholm with 12+ years of experience designing and operating mission-critical, highly scalable systems for public sector and enterprise customers. He specializes in end-to-end architecture and hands-on delivery—most recently re-architecting a Video Management System to scale from 5,500 to effectively unlimited fixed and mobile cameras while unifying multiple systems into a single operator-facing UI. Comfortable switching between roles (architect, backend developer, DevOps, product designer), he has repeatedly built centralized platforms for payments and integrations that prioritize standardization, control and cost efficiency. His background spans managing large operations, leading migrations and building automation-first environments for banking and telecom clients, reflecting a "automate everything" mindset. He combines deep technical craftsmanship with strategic oversight and regulatory/compliance responsibility, making him effective in high-stakes 24/7 contexts. Outside of formal roles he runs an ICT contracting firm, showing an entrepreneurial streak alongside his public-sector leadership.
12 years of coding experience
23 years of employment as a software developer
HBO Electronics Mathematics Science English geography, HBO Electronics Mathematics Science English geography at Education
English, Swedish, Dutch
Github Skills (43)
high-performance10
databases9
sql9
scale-out9
sql-database9
database9
cpp9
distributed-database8
cloud-native8
yugabytedb8
pem8
paxos8
kubernetes8
oltp7
distributed-systems7
Programming languages (2)
Github contributions (5)
jrnker/CSharp-easy-RSA-PEM
Feb 2015 - May 2016
Contributions:7 commits, 5 PRs, 5 pushes in 1 year 3 months
cryptographydotnetencodedclass-librarykeys
jrnker/BumpVersions
Feb 2016 - Apr 2019
Contributions:9 pushes, 1 branch in 3 years 1 month
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