Understanding systems, testing behavior, and improving software.

Worked between leadership, sales, operations, and developers on B2B ordering, configuration, claims workflows, product data, and digital sales improvements.

• Translated business needs into clear briefs, user stories, acceptance criteria, release checks, and practical next steps for technical teams.
• Defined feature scope and aligned stakeholders with developers to improve ordering, configuration, and claims systems.
• Validated implementations and releases, clarified expected behavior and edge cases with developers, and checked product data for consistency.

• Requirements Gathering
• Quality Assurance
• Product Systems
• Stakeholder Alignment
• Data Consistency
• Edge Case Analysis

Developed C#/.NET and SQL backend features for a production number portability system used by Belgian telecom clients, alongside internal administration tools.

• Worked on a production number portability project for Belgian telecom clients, supporting backend development and deployment workflows.
• Built an internal administration application in C# WinForms to support operational and development workflows.
• Used .NET, C#, SQL, Azure DevOps, and pipeline mechanisms across backend development, releases, and occasional frontend tasks.

• C#
• .NET
• SQL
• Azure DevOps
• Backend Development

Worked on software quality, test design, automation, API testing, and release validation for production web applications.

• Designed and executed manual, API, and automated tests for production web applications.
• Used Ranorex, Postman, JMeter, and Azure DevOps to support test automation, API validation, release QA, and bug prioritization.
• Worked with developers to investigate bugs, clarify expected behavior, verify fixes, and support stable production releases.

• Ranorex
• Postman
• JMeter
• Azure DevOps
• Manual Testing
• Automated Testing
• API Testing
• Fix Verification

Customer-facing support role for Radosť, O2 Slovakia’s digital mobile brand, focused on clear written communication, product guidance, and problem solving.

• Resolved Radosť customer queries through online chat and email, guiding users through product features, services, and account-related questions.
• Communicated patiently and clearly with customers in written support situations, helping them understand and solve practical issues.
• Received positive feedback from Sales Director Milan Morávek for a patient, customer-focused approach.

• Communication
• Problem Solving
• Customer Support
• Online Support

Part-time retail role focused on speed, accuracy, customer care, and daily store support.

• Worked at the checkout, helped customers, and supported stock replenishment in a busy supermarket environment.
• Built habits around speed, accuracy, reliability, and staying kind under pressure.

• Customer Service
• Retail
• Cash Handling
• Reliability

International hospitality role in Mallorca focused on customer service, bar operations, and learning quickly in a fast-paced environment.

• Prepared coffee, mixed drinks, served customers, and supported daily bar operations.
• Took responsibility for opening and closing the bar after gaining trust in the role.
• Received excellent feedback, including 8/10 evaluation and notes highlighting being hard-working and quick to learn.

• Bartending
• Barista
• Customer Service
• Hospitality

Early customer-facing role where I built discipline, speed, teamwork, and service habits while studying.

• Served customers, prepared food, operated the cash register, cleaned the restaurant, and helped keep a fast speed of service.
• Trained other workers and built early habits around teamwork, discipline, and customer care.
• Recognized as Employee of the Month in Zvolen.

• Teamwork
• Customer Service
• Training
• Food Service