DevOps Engineer

DevOps inžinier s 8 rokmi skúseností s predchádzajúcou praxou programátora. V súčasnosti pracuje na aplikačnej infraštruktúre na Kubernetes a Docker, vytvára CI/CD pipeline, vytvára obrazy a nasadzuje servery. Okrem toho zabezpečuje a nasadzuje cloudovú infraštruktúru v AWS, robí vývoj založený na mikroslužbách, ako aj kontajnerizáciu. Je to veľký projekt, v ktorom je 300 virtuálnych počítačov a 200 bodov. Programuje v jazykoch Bash (expert), Golang a C++. Aktívne používa Debian Linux na inštaláciu serverov a pracuje aj s Terraform, Helm, CircleCI, DataDog, GitHub, CircleC. Je zvyknutý na agilné prostredie v Kanban, kde majú denné šprinty. V minulosti viedol tím 4 vývojárov a je otvorený tomu, aby tak urobil aj v budúcnosti. Angličtinu ovláda na komunikatívnej úrovni.

Senior DevOps, Senior Software Developer

(January 2015 – Recent)

• Provisioned infrastructure and managed deployments for a large-scale worldwide multitenant SaaS platform.
• Led the full transition process from VMware ESXi to cloud computing, ensuring seamless integration.
• Developed custom applications to address specific product and DevOps requirements.
• Demonstrated expertise in the entire application lifecycle, including code writing, CI/CD compilation, testing, containerization, cloud infrastructure provisioning, deployment, operation, and monitoring.
• Automated repetitive tasks and created in-house automation tools to improve efficiency.
• Ensured high availability of enterprise-grade operations.
• Advanced knowledge of AWS services such as VPC, EC2, EBS, EFS, EKS, TGW, RDS, and Route53.
• Proficient in Terraform, Kubernetes, Helm, Docker, DataDog, CircleCI, and GitHub for efficient development and deployment.
• Experienced with VMware ESXi and Linux Debian for virtualization and server management.
• Skilled in working with various databases, including PostgreSQL, MySQL, Redis, ElasticSearch, and MongoDB, as well as message broker RabbitMQ.
• Familiarity with Nginx and LetsEncrypt for web server and SSL certificate management.
• Proficient in Golang, Bash, and C/C++ for development tasks.
• Knowledgeable in OpenVPN, IPsec, and Postfix for secure communication.
• Well-versed in networking concepts, particularly in cloud environments, Linux, dedicated network elements, and network packet analysis.

Senior Software Developer, Server Administrator

(January 2009 – Recent)

• Developed software and provided services for internet service providers, focusing on television over internet and voice over internet.
• Led the development of large client-server information systems for customer administration and billing, internet, IPTV & VoIP infrastructure administration, and network device configuration.
• Implemented an antifraud system to detect and prevent attacks against VoIP PBX.
• Proficient in various programming languages, including Delphi, PHP, C++, and C#, for different projects.
• Skilled in server installation, upgrade, administration, security, backup, and monitoring, with expertise in Debian Linux, RedHat Linux, PostgreSQL, Oracle, Apache, DHCP, DNS, and VMWare ESXi virtualization.
• Experienced in network traffic analysis and setting up high availability for Apache & PostgreSQL.

HW & SW Developer, Production Manager

(January 2002 – December 2008)

• Worked on wireless (2.4 GHz & 433 MHz) and wired voting systems for city councils and questionnaires at congresses.
• Developed Delphi test and support utilities.
• Proficient in Atmel AVR ANSI C firmware, Atmel AVR HW design, Atmel x51 Assembler, and Atmel x51 HW design.
• Conducted Eagle PCB layout and managed production processes.

Delphi & MS-SQL Developer

(July 2002 – December 2007)

• Developed an information system for a specialized wholesale/retail company, focusing on registration, billing, inventory management, and purchase planning.
• Led the development of a large client-server system to handle various aspects of the business operations.
• Utilized Delphi and MS SQL for efficient software development and database management.

HW & SW Developer, Production Manager

(January 2003 – December 2006)

• Worked on a system for text and voice messages at underground stations in Prague.
• Developed an extensive client-multi-server system with high availability, automatic and semi-automatic reporting, distribution of reports, and automatic data synchronization between nodes.
• Proficient in using Delphi and Firebird for software development.
• Skilled in Atmel x51 Assembler, Atmel x51 HW design, and Eagle PCB layout for hardware development.
• Managed production processes for efficient system deployment