Jari Jokinen
Freelance Software Engineer at J2 Digital
Helsinki, Finland
Summary
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SeniorJari Jokinen is a seasoned freelance software engineer based in Helsinki with over 14 years of professional experience and more than two decades building web and mobile solutions. He combines full‑stack development with cloud and DevOps expertise—designing AWS infrastructures, managing Linux servers, and shipping resilient mobile and web apps. His work spans embedded systems and pentesting, reflecting a pragmatic blend of product-focused engineering and security-minded operations. As founder of J2 Digital and a principal at JX Software, he owns projects end-to-end from architecture to long-term maintenance. Beyond engineering, he runs private investing and algorithmic trading experiments, bringing data-driven decision making to technical and financial domains. Known for tackling both low-level systems and user-facing features, he thrives on projects that require broad technical scope and hands-on delivery.
14 years of coding experience
Finnish, English
Stackoverflow
760reputation
187kreached
19answers
1question
Github Skills (52)
rails10
ruby10
html10
bootstrap9
javascript9
terraform9
terraform-provider9
mvc9
espressif9
css9
sass9
aws9
ruby-on-rails9
activerecord9
esp328
Programming languages (7)
Github contributions (5)
jarijokinen/dotfiles
Sep 2015 - May 2022
Contributions:226 pushes in 6 years 9 months
jarijokinen/puppet-desktop
Mar 2013 - Jun 2013
Contributions:41 commits in 3 months
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