Oleksii Kliukin
Software Engineer at TigerData (creators of TimescaleDB)
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolOleksii Kliukin is a seasoned software engineer based in Berlin with 12 years of deep experience in database engineering, PostgreSQL internals, and UNIX-based open-source systems. He has driven production-ready HA PostgreSQL solutions and Kubernetes operators at Zalando and contributed core improvements to Patroni and Postgres Operator, plus ongoing work at TigerData (TimescaleDB). Comfortable across back-end, DevOps and DBA roles, Oleksii specializes in replication, backup automation and cluster orchestration—having implemented WAL-based replica creation, Linux watchdog integrations and AWS-aware connection handling. A long-time PostgreSQL contributor since 2009, he blends low-level database knowledge with practical automation for cloud-native deployments and a track record of shipping tooling used in large-scale migrations from bare-metal to Kubernetes.
12 years of coding experience
17 years of employment as a software developer
MS Applied Math, MS Applied Math at Taurida 'V. I. Vernadskiy' National University, Simferopol
Stackoverflow
347reputation
9kreached
5answers
4questions
Github Skills (32)
kubernetes10
docker10
postgresql10
python10
scripting10
high-availability10
configuration-management10
etcd10
dockers10
script10
go10
kubernetes-pods10
sh10
shell10
replication10
Programming languages (14)
Github contributions (5)
zalando/spilo
Apr 2015 - Dec 2020
Highly available elephant herd: HA PostgreSQL cluster using Docker
Role in this project:
DevOps Engineer & Database Engineer/Administrator
DevOps Engineer & Database Engineer/AdministratorContributions:4 releases, 1 review, 129 commits in 5 years 8 months
Contributions summary:Oleksii primarily focused on setting up and configuring a highly available PostgreSQL cluster using Docker and Patroni. Their contributions involved writing and modifying shell scripts (`postgres_ha.sh`) to automate tasks such as initializing etcd, managing backups with WAL-e, and configuring PostgreSQL parameters, including enabling hot standby and setting up SSL. They also made changes to a Python script (`etcd.py`) related to the etcd cluster management. The user also worked on migrating from Governor to Patroni.
pythondocker-imageelephantdockerpatroni
patroni/patroni
Apr 2015 - Aug 2018
A template for PostgreSQL High Availability with Etcd, Consul, ZooKeeper, or Kubernetes
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:8 releases, 4 reviews, 338 commits in 3 years 4 months
Contributions summary:Oleksii primarily focused on enhancing the project's PostgreSQL capabilities and infrastructure. Their contributions involved allowing connections to the host's IP address and managing replication and user roles in the PostgreSQL configuration file. They also added a feature to utilize AWS instance addresses in PostgreSQL connection strings, and implemented improvements to create replicas with either pg_basebackup or WAL-E, and a basic test setup with Letttuce for replication. The user also made contributions to implement Linux software watchdog.
etcdzookeeperavailabilityhaproxykubernetes
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