Jan Killian
Full Stack Developer at Salsita.co: We Engineer Exceptional Experiences
Prague, Prague, Czechia
Summary
👤
Senior🎓
Top SchoolJan Killian is a pragmatic full-stack developer with around 15–18 years of experience designing and shipping product-focused web applications across startups and large enterprises. He combines backend architecture and API design (Node.js/TypeScript, Python, GraphQL) with polished React frontends and reusable component systems, often owning CI/CD, data models and security considerations end-to-end. Comfortable in fully remote, asynchronous teams, he has repeatedly led migrations, prototype workshops and production integrations (payments, parsing complex legal docs) across GCP/AWS/Azure. His background spans building monorepos, npm/pypi packages and test automation—he even contributed QA-focused test maintenance to the long-running brunch web-app project. Known for balancing “make it work, make it beautiful, make it fast,” he brings a practical mix of product empathy, performance attention and cross-timezone collaboration. Based in Prague, he prefers remote-first roles and part-time rhythms that sustain long-term impact.
15 years of coding experience
13 years of employment as a software developer
GCE, Mathematics, German language, GCE, Mathematics, German language at GWP / KorunníInterrupted, Computer Science, Interrupted, Computer Science at Charles University
Czech, English
Stackoverflow
101reputation
44kreached
10answers
1question
Github Skills (11)
javascript10
test-automation10
testing10
coffeescript9
mochajs8
build-automation8
command-line-arguments6
windows6
webapp6
python6
string-concatenation6
Programming languages (17)
Github contributions (5)
brunch/brunch
Apr 2013 - Apr 2013
:fork_and_knife: Web applications made easy. Since 2011.
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:10 commits in 1 day
Contributions summary:Jan primarily focused on modifying and maintaining test files within the repository. Their commits demonstrate the removal, moving, and reverting of test files related to specific functions. These actions involved adjusting test setups and ensuring accurate execution, indicating a strong focus on test coverage and reliability. The work encompassed various testing functions, like `startsWith`, `sortByConfig` and setup configurations to ensure the integrity of the project.
web-applicationspipelinejavascriptkniferequirejs
salsita/flask-raml
Feb 2015 - Jul 2015
Flask-RAML (REST API Markup Language) API server with parameter conversion, response encoding, and examples.
Contributions:27 commits, 2 PRs, 20 pushes in 4 months
pythonflaskmarkupmarshmallowopenapi
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.