Cies Breijs
Freelance IT Consultant at cies.breijs.com
Randstad, Netherlands
Summary
👤
Senior🎓
Top SchoolCies Breijs is a freelance IT consultant and seasoned technology leader with 22 years of experience helping teams ship better software by tackling technical debt, improving architecture, and boosting development efficiency. Rooted in the open source movement, he has held CTO roles and led engineering teams across startups and service firms, blending hands-on coding, audits, and coaching to raise delivery standards. His background spans building open-source educational tools (KTurtle), architecting web services and REST APIs, and introducing test automation and CI in fast-growing product companies. Based in the Randstad, he combines entrepreneurial instincts with a pragmatic focus on measurable team improvements and has a track record of translating technical vision into repeatable processes and scalable systems. An understated strength is his experience teaching and consulting across cultures and sectors—academic guest lectures, NGOs, and international outsourcing—making him effective at lifting teams beyond pure engineering.
22 years of coding experience
21 years of employment as a software developer
VWO (Atheneum), Pre-University Secondary Education, VWO (Atheneum), Pre-University Secondary Education at Libanon Lyceum RotterdamBSc, Business Computer Science (Dutch: Informatica en Economie), BSc, Business Computer Science (Dutch: Informatica en Economie) at Erasmus University RotterdamIndustrial Design Engineering (discontinued), Industrial Design Engineering (discontinued) at Delft University of Technology
English, Dutch, German, French
Stackoverflow
333reputation
2kreached
0answers
5questions
Github Skills (200)
multithreading10
wp-api10
npm-package10
ubuntu10
vim10
graphql-api10
ktor-framework10
stackage10
trigger10
api10
webstorm10
simplification10
jetbrains-ides10
ktor-client10
toml10
Programming languages (27)
Github contributions (5)
cies/kubuntu-setup
Mar 2020 - Sep 2022
My setup based on a recent Kubuntu install
Contributions:68 commits, 2 PRs, 82 pushes in 2 years 5 months
firefoxconfigurationlibreofficekubuntuansible
cies/htoml
May 2015 - May 2016
TOML file format parser in Haskell
Contributions:11 commits, 9 PRs, 55 pushes in 1 year
file-formatghchaskelltomlaeson
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.