Karol Sebesta

Basic

Angestellt, Senior DevOps Engineer, AT&T

Bratislava, Slovakia

Skills

Azure
DevOps
Terraform
Kubernetes
Docker
Go
Ansible
Helm
OpenID
Linux
Perl
Python
Jenkins
Cloud Computing
Oauth2
Prometheus
Grafana
ELK stack
Apache Kafka
Microservices
Security
System Administration
Automation
Network Management
Shell Scripting
Cloud Architecture
Solution Architecture
Public / Hybrid Cloud Solutions
Software Development
Agile
Git
MySQL
DAST
SAST
SCA
akv2k8s
Spring Cloud Config
Kured
Software as a Service (SaaS)
PaaS
FaaS
IaaS

Timeline

Professional experience for Karol Sebesta

  • Current 3 years, since Jun 2019

    Senior DevOps Engineer

    AT&T

    - Design and deliver Azure Public/Hybrid Cloud infrastructure for AT&T customers / organisations. - Lead, Execute and manage on-premise to Azure Cloud migrations. - Design and deliver distributed, scalable and redundant applications. - Tech stack: Azure (DevOps, IaaS, PaaS, SaaS, FaaS), Terraform, Go, Python, Kubernetes, Docker, Ansible, Kafka, ELK stack, MySQL, Prometheus, Alertmanager, Grafana, SonarQube, Veracode SAST + SCA, IBM ASE (DAST), SpringCloudConfig Server, Jenkins, OIDC, OAuth2, akv2k8s, Kured.

  • Current 4 years and 1 month, since May 2018

    Business Owner

    tell-tell s.r.o.

    Tell-Tell provides professional services for wide range of businesses. Our services portfolio includes Business Optimization, Software Engineering, Technology Transformation, Project Management and Consulting.

  • 10 months, Aug 2018 - May 2019

    Senior Software Engineer

    DXC.technology

    - Go/Java developer (Storage Engineering team) - Responsible for SAN/NAS Storage Automation and Monitoring. - Technologies used: Go, Java, Maven, Ansible, Jenkins, MySQL, PostgreSQL, HAProxy, HP 3PAR, NetApp.

  • 5 years and 4 months, Feb 2014 - May 2019

    Software Developer / Analyst

    AT&T

    AT&T for Royal Dutch Shell LCM Services - Focusing on Network/Systems data polling, Automation (configuration remediation). - Developing and maintaining various network configuration fetching/feeding and monitoring systems. - Software code auditing - discovery of bugs, security breaches or violations of programming paradigms. - Technologies used: Perl, Python, Cisco, Sonus, Juniper, MySQL, Java, Linux.

  • 2 years, Feb 2012 - Jan 2014

    Delivery Lead / Technical Owner

    HPE

    - Providing Deep technical support of Solaris, Linux, HP-UX and ESX VMware systems to the North Rhine-Westphalia bank institution. - Software development of Perl/Shell solutions based on customer requests and needs - Proactively creating and driving initiatives for service delivery improvement - Ensuring operational and financial efficiency targets are being met on a monthly basis. - Overseeing day-to-day allocation of work packages in consultation and agreement with Account Delivery Managers and the client

  • 2 years, Feb 2010 - Jan 2012

    Unix / Linux Engineer

    HPE

    - 2nd level systems engineer for HP's Enterprise customers. - Maintaining and handling tasks related to Solaris, Linux, HP-UX, AIX and VMWare systems.

  • 1 year and 7 months, Jul 2008 - Jan 2010

    Prior Experience

    Slovak companies

    System Administrator - providing IT Infrastructure and Network support - Remote customer technical support - Installing and maintaining Linux (CentOS, Debian), Windows systems - Tasks automation - scripting (Bash, Perl, Python) - Identity Management (LDAP, Active Directory etc.)

Languages

  • English

    Fluent

  • Czech

    First language

  • Korean

    Basic

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