Hans Rakers
Senior DevOps Infra Specialist at LeaseWeb
Amsterdam, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolHans Rakers is a Senior DevOps Infra Specialist based in Amsterdam with over 20 years of hands-on Linux and infrastructure experience, currently shaping the Developer Platform at LeaseWeb. He architects and maintains critical services like an OpenResty API gateway and a custom PHP/Symfony authentication provider, while leading Chef-based configuration management and Jenkins CI/CD improvements including containerized builds. Hans replaced legacy monitoring with a bespoke Icinga deployment across 16 datacenters and introduced Prometheus/Alertmanager and Elastic/Kafka for centralized observability and logging. An active contributor to the sous-chefs/elasticsearch cookbook, he focuses on robust configuration, permission safety, and IPv6 toggleability—practical contributions that improve production reliability. Known for mentoring peers and teaching Chef, he also quietly champions Golang adoption within his teams, blending deep operational expertise with a continuous-learning mindset.
20 years of coding experience
17 years of employment as a software developer
BSc, Communication systems, BSc, Communication systems at HU University of Applied Sciences Utrecht (Hogeschool Utrecht)
Dutch, English, German
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (16)
amazon-elasticsearch10
chef-client10
configuration-management10
cookbook10
elasticsearch10
elasticsearchquery10
chef-solo10
aws-elasticsearch10
devops10
elasticsearch-api10
testing10
cicd9
automation9
automations9
bash8
Programming languages (15)
Github contributions (5)
sous-chefs/elasticsearch
Mar 2016 - Nov 2018
Development repository for the elasticsearch cookbook
Role in this project:
DevOps Engineer
DevOps EngineerContributions:8 commits, 13 PRs, 9 comments in 2 years 7 months
Contributions summary:Hans contributed to the configuration and testing of the Elasticsearch cookbook, focusing on ensuring correct file permissions and environment variables. They added checksums for Elasticsearch versions, modified configuration files to prevent executability, and implemented tests to validate these changes. The user also allowed for the enabling and disabling of IPv6, as well as improving the formatting of environment files.
cookbookelasticsearchchef-resourcemanaged-by-terraformchef
hrak/docker-php-5.3
Dec 2018 - Nov 2021
PHP-5.3.29 in a Ubuntu 18.04 container for legacy applications
Contributions:21 commits, 14 PRs, 13 pushes in 2 years 11 months
phpdockerubuntuphp-5
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