Jędrzej J
Staff Engineer at OLX
Lisbon, Portugal
Summary
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SeniorJędrzej J is a Staff Engineer based in Lisbon with nine years of experience driving reliability, observability, and quality across high-traffic web platforms. He combines deep hands-on skills in PHP and Java with cloud-native practices (AWS/Azure, Kubernetes, Terraform, Helm) to improve performance and delivery speed for hundreds of thousands RPM systems. Known for turning cross-team theory into practice, he has led observability strategies, incident automation (including a Slack Incident bot), and organization-wide task forces to solve complex operational problems. A pragmatic team player and Scrum practitioner, he champions transparency, feedback, and decision records to institutionalize improvements. He’s equally comfortable shipping infrastructure-as-code and building internal developer tools that measurably boost productivity. Notably, he pairs historical expertise in monolith optimization with modern microservice and SRE approaches to reduce toil and accelerate releases.
9 years of coding experience
19 years of employment as a software developer
Github Skills (12)
antivirus10
clamav10
open-source8
varnish6
ssl3
proxy3
scalable3
tls-proxy3
spf2
authentication2
dmarc2
dkim2
Programming languages (4)
Github contributions (5)
jedrzejj/nodemcu-firmware
Jul 2018 - Jun 2021
lua based interactive firmware for mcu like esp8266
Contributions:2 pushes in 2 years 11 months
nodemculuafirmwareesp8266tasmota
jedrzejj/clamav
Jun 2023 - Jun 2023
ClamAV - Documentation is here: https://docs.clamav.net
Contributions:2 pushes, 2 branches in 4 days
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