Henny Krijnen
Freelance Software Engineer at Krijnen Development
North Brabant, Netherlands
Summary
👤
Senior🎓
Top SchoolHenny Krijnen is a freelance software engineer with 11 years of experience helping companies break through technical bottlenecks—from legacy PHP systems to slow deployments and missing cloud infrastructure. He builds pragmatic, backend-focused solutions using PHP (Symfony, Laravel), JavaScript (React, Next.js), and Python (Django), and operates self-hosted, cloud-native environments on Kubernetes, Terraform and GCP. Henny has led migrations, introduced async queue architectures, and optimized runtime performance (Roadrunner, queue processing) while delivering scraping pipelines, dashboards and custom payment integrations. He combines hands-on coding with infrastructure provisioning and CI/CD automation, making him equally at home shipping a single critical component or designing full architectures. Based in North Brabant, he’s available for on-demand projects and often surfaces practical, overlooked fixes that restore system stability and speed.
11 years of coding experience
5 years of employment as a software developer
Zadkine ICT Rotterdam
Github Skills (28)
roadrunner9
application-server9
php-application9
php8
runner7
golang7
psr-77
spiral7
rpc7
high-performance6
api6
http6
symfony-bundle6
cli5
load-balancer5
Programming languages (4)
Github contributions (5)
Fichtme/symfony-command-runner
Nov 2017 - Dec 2024
Symfony command runner
Contributions:6 releases, 5 PRs, 22 pushes in 7 years 2 months
phpsymfony-bundlerunnersymfonycommand-runner
ewarehousing-solutions/ewhs-api-php
Mar 2022 - Jul 2024
eWarehousing solutions middleware api package
Contributions:8 releases, 3 reviews, 9 PRs in 2 years 4 months
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