Aleksandar Kostadinov
Senior Principal Software Developer at IBM
Bulgaria
Summary
🤩
Rockstar🎓
Top SchoolAleksandar Kostadinov is a Senior Principal Software Developer with 13 years of experience building backend systems and API management platforms, currently driving 3scale work at IBM after leading similar efforts at Red Hat. He combines deep database expertise—evident from contributions to the oracle-enhanced ActiveRecord adapter—with practical DevOps and test automation skills demonstrated in OpenShift verification-tests. Known for translating complex requirements into simple, secure and extensible solutions, he excels at communicating across technical and non-technical stakeholders to ship reliable systems. Based in Bulgaria, he pairs analytical problem-solving with hands-on coding and CI/CD experience, and often focuses on subtle data-handling challenges like attribute serialization and case-insensitive query matching.
13 years of coding experience
17 years of employment as a software developer
Bachelor, Informatics, Bachelor, Informatics at University of Economics - Varna
Stackoverflow
17,828reputation
7.7mreached
283answers
38questions
unix
top-5%
version-control
top-5%
mariadb
top-1%
ruby
top-5%
bash
top-5%
chmod
top-5%
Github Skills (54)
mysql10
scripting10
mariadb10
testing10
oracle-database10
cucumber10
schema-design10
cicd10
java10
ruby10
javas10
script10
openshift10
sql10
wildfly10
Programming languages (33)
Github contributions (5)
openshift/verification-tests
Nov 2018 - Jun 2021
Blackbox test suite for OpenShift.
Role in this project:
Test Automation Engineer & DevOps Engineer
Test Automation Engineer & DevOps EngineerContributions:231 reviews, 350 commits, 304 PRs in 2 years 8 months
Contributions summary:Aleksandar primarily contributed to the test suite for OpenShift, implementing and modifying various helper services and test scenarios. They demonstrated expertise in creating and configuring testing environments, including NFS provisioners, EFS provisioners, and logstash services. The user also worked on the CI/CD pipeline, containerized deployments, and general test infrastructure improvements, evidenced by changes to installation scripts and environment configuration files. Furthermore, they made significant contributions to the OLM upgrade tests and handling of network configurations.
test-automationtestingopenshiftrubyblackbox
rsim/oracle-enhanced
Aug 2021 - May 2022
Oracle enhaced adapter for ActiveRecord
Role in this project:Backend & Database Engineer
Backend & Database EngineerContributions:8 reviews, 5 commits, 6 PRs in 9 months
Contributions summary:Aleksandar focused on enhancing the `oracle-enhanced` adapter for ActiveRecord, primarily working on database-related functionalities. They implemented features like LOB equality, case-insensitive matching for LIKE queries, and unique constraint specifications. The user also addressed serialization of attributes before writing to the database, which would affect how data is stored. These contributions demonstrate a strong focus on database interaction and data handling within the Oracle-specific ActiveRecord adapter.
railsrubyadapteroracleactivemodel
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