Open to opportunities

Jiří Kořenek

@jikoenek

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I’m a DevOps and backend developer focused on reliable, scalable systems.

Czechia

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What I'm looking for

I’m looking for a role where I can own CI/CD, Docker/Azure deployments, and production reliability—automating ops with Python/Bash and partnering with developers to ship stable, well-instrumented services.

I’m a DevOps-focused developer who builds and maintains dependable services. I’ve worked across the stack—from back-end development and testing to network/IT administration—so I approach deployments with a practical, end-to-end mindset.

At OptimiDoc, I deploy and maintain containerized services using Docker and Azure Container Instances. I configured authentication and integrations with Microsoft Entra ID, implemented CI/CD pipelines, and managed Linux servers. I also set up reverse proxy and web services with Nginx, automated recurring tasks with Bash and Python scripts, monitored services, and handled production incidents.

Earlier, I gained strong software foundation through back-end engineering at Atom RTC (PHP), where I designed and managed databases for performance and scalability, and implemented client-side JavaScript for smooth integration. I also worked as a Mobile Apps Tester at Inited Solutions, performing thorough testing and collaborating closely with front-end developers to identify, reproduce, and document issues.

I’ve also supported the reliability of systems through IT and networking experience, including responsibilities for company IT infrastructure. Along the way, I sharpened problem-solving habits that carry into automation and operations—because I prefer smart frameworks and efficient processes over unnecessary complexity.

Experience

Work history, roles, and key accomplishments

Docker/Azure Services Engineer

OptimiDoc s.r.o.

Oct 2024 - Mar 2026 (1 year 5 months)

Deployed and maintained containerized services using Docker and Azure Container Instances. Configured authentication and integrations with Microsoft Entra ID, implemented CI/CD pipelines, managed Linux servers, set up Nginx reverse proxy/web services, automated tasks with Bash/Python, and handled production monitoring and incidents.

Docker Azure Container Instances GdPicture.NET Microsoft Entra ID CI CD Linux Nginx Reverse Proxy BASH Python Monitoring Incident Response

Self Employed (Healthy Nutrition)

OSVČ

Feb 2022 - Dec 2022 (10 months)

As a self-employed person in healthy nutrition, used technologies to streamline operations and spend more time on business development. Strengthened problem-solving skills through applying technology to the business.

Network Administrator

Gumárny Zubří a.s

Sep 2021 - Jan 2022 (4 months)

Acted as a network administrator responsible for the company’s IT infrastructure and smooth operation of IT services. Developed a PHP-based system for managing BOZP requirements to simplify reporting processes.

Network Administration IT Infrastructure Linux PHP IT Operations WHS Management System Development

Back-end Developer

Atom RTC

Feb 2019 - Jun 2019 (4 months)

Worked as a back-end developer specializing in PHP, including database design and management for efficient storage and retrieval. Also worked on client-side JavaScript to enable integration between front-end and back-end.

PHP Database Administration Integration

Mobile Apps Tester

Inited Solutions

Sep 2018 - Dec 2018 (3 months)

Performed thorough testing of mobile applications to ensure they worked well across devices and platforms. Collaborated with frontend developers to identify, reproduce, and document bugs.

Cordova Ionic Mobile App Testing Bug Documentation

E-Bike Repair Technician

Kolofix a.s

Jan 2024 - Present (2 years 6 months)

Provided service for repairs of electric bikes, including diagnostics and troubleshooting of various issues. Used CAD-related experience as part of restoring bikes to an optimal state and adapting to customer needs.

Electrical Troubleshooting Troubleshooting Repairs CAD Customer Service

Painting Line Technician

Lakovna Hajdík

Jan 2023 - Present (3 years 6 months)

Handled management of unused paint, contributing to significant cost savings for the company. Used computer skills to transfer a company application from a tablet to a smartphone to improve productivity while working on the go.

Process Optimization Mobile Device Setup

Game Developer

Szeiner Software Company

Jan 2018 - Present (8 years 6 months)

Responsible for designing and implementing game-related deployments and for simplifying processes and finding bugs/features. The project was challenged when the game rules author withdrew, requiring you to maintain progress and share learned experience.

Game Development Deployment Debugging Programming Problem Solving

Warehouse Worker

Amazon

Worked as a warehouse worker and used technical skills to improve own operations. Identified and leveraged issues in the company intranet web application to support personal notes and training of new employees.

Training Support