Krystian Jurasik
Brzeźnica
Summary
Principal DevOps Engineer with expertise in OpenShift management and container orchestration at Transition Technologies PSC. Demonstrated ability to transform teams and improve system reliability. Skilled in PostgreSQL administration and promoting collaboration, resulting in enhanced operational efficiency and alignment with business objectives.
Overview
13
13
years of professional experience
1
1
Certification
Work History
Principal DevOps Engineer
Transition Technologies PSC
07.2023 - Current
- OpenShift Enterprise Architecture: Spearheaded the end-to-end design and implementation of the OpenShift architecture across the organization. Established corporate standards for cluster deployment and configuration, ensuring scalability and adherence to best practices.
- Air-Gapped Environment Expertise: Managed the full lifecycle of OpenShift clusters in strictly isolated environments with no internet access, overcoming complex dependency and deployment challenges.
- Infrastructure Modernization: Replaced legacy infrastructure with standardized k8s-based solutions, improving system reliability and security.
- Team Transformation & Mentoring: Led 12-month upskilling program for administration team, transforming unit with low technical proficiency into self-sufficient team capable of managing complex operations independently.
- Business Alignment & Advocacy: Increased business awareness of containerization benefits and built trust among senior leadership, resulting in adoption of new architectural standards and heightened investment in DevOps technologies.
DevOps Engineer
FINANTEQ s.a.
07.2022 - 06.2023
- Administration of the Openshift 4 clusters service at an advanced level
- Administered CI/CD components: Jenkins, GitLab, Nexus, Docker registry, ensuring seamless integration and deployment processes
- Managed Jenkins configuration and user access to streamline CI/CD processes.
- Created deployments for services running in Openshift 4, facilitating reliable application delivery
- Built Docker images for services, optimizing containerization for efficient deployment
Expert DevOps Engineer
ING Bank Śląski
07.2021 - 06.2022
- Managed istio mesh service operations, enhancing application connectivity and reliability.
- Administered Openshift 4 clusters to optimize service performance and availability.
- Administered ODF from RedHat to streamline storage management processes.
Senior Software Designer/DevOps
ADB
09.2018 - 06.2021
- Administration of the Openshift 3 clusters at an advanced level
- Installed and maintained Openshift environment to ensure stability and performance
- Administered Docker service at an advanced level to optimize container management
- Installed and maintained PostgreSQL databases to support application data management
- Administered PostgreSQL clusters using Patroni to ensure high availability and performance.
- Developed automation scripts in Ansible to streamline deployment processes.
Manager of the Verto administration department
Streamsoft
01.2018 - 09.2018
- Managing a team of administrators
- Planned and implemented automation of administrative tasks, enhancing workflow efficiency
- Administration of PostgreSQL databases: over 1.5 TB, an average number of over 300 transactions per second
- Analyzed performance problems for key customers, identifying root causes to improve service delivery
- Introduced Docker container solutions, streamlining deployment processes
- Advanced level Jboss / Wildfly administration
- Completed introductory course on Ansible for automation and configuration management.
Manager of integration department, administrator
Streamsoft
06.2015 - 12.2017
- Standardized development environment with PostgreSQL database, JBoss/Wildfly application server, Maven to enhance consistency and reliability.
- Analyzed, designed, and supervised integration implementations with Allegro, eBay, Amazon, IAIShop, and Shoper to streamline operations.
- Managed team of programmers, fostering collaboration and ensuring project milestones were met.
- Administered PostgreSQL databases, ensuring optimal performance and security.
- Administration of JBoss/Wildfly application server clusters
- Analysis, design and supervision over implementation: WMS application on Android, Android mobile client
- Software development process management
Administrator
Streamsoft
05.2013 - 05.2015
- Standardization of the production environment consisting of: PostgreSQL database, JBoss/Wildfly application server, Centos 6/7
- Production implementation of database solutions: asynchronous replication, hot backup
- Configure and implement monitoring based on NAGIOS
- Updated Verto application to enhance performance and user experience
- Analyzing and solving current problems in cooperation with programmers
- Developed automation scripts to streamline repetitive tasks, improving overall workflow efficiency
- Troubleshoot application-level issues
- Identified and optimized inefficient SQL queries, enhancing database performance and response times
- Writing scripts in the Groovy language
- Creating statements based on procedural statements in PostgreSQL
Education
MSc. - mathematical computer science
University of Zielona Góra
Zielona Góra01.2008
Skills
- DevOps practices
- OpenShift management
- Container orchestration
- SQL proficiency
- PostgreSQL administration
- Bash scripting
- Linux administration
- JBoss/WildFly expertise
Websites
Certification
- JB248 - JBoss Application Administration I, LinuxPolska
- Training in PostgreSQL database optimization, LinuxPolska
- RedHat RCSA nr 140-208-984
Hobbies and Interests
- Literature written by J. R. R. Tolkien, S. King
- Tv series: Game of Thrones, Dexter, Dr House, Battlestar Galactica, Stargate, IT Crowd, The Walking Dead and those not seen yet
- Ping pong, table football
- Warmachine
- Single-line tapes, i.e. unnaturally long commands in the console
Technical Skills
Linux, PostgreSQL, Openshift, DevOps, SQL, DevOps, Opsenshift administration, scripts in bash, Linux administration, JBoss, Wildfly administration, PostgreSQL administration
Languages
English
Intermediate (B1)
B1
Timeline
Principal DevOps Engineer
Transition Technologies PSC
07.2023 - Current
DevOps Engineer
FINANTEQ s.a.
07.2022 - 06.2023
Expert DevOps Engineer
ING Bank Śląski
07.2021 - 06.2022
Senior Software Designer/DevOps
ADB
09.2018 - 06.2021
Manager of the Verto administration department
Streamsoft
01.2018 - 09.2018
Manager of integration department, administrator
Streamsoft
06.2015 - 12.2017
Administrator
Streamsoft
05.2013 - 05.2015
MSc. - mathematical computer science
University of Zielona Góra