Lead Full Stack Developer in Košice

Deutsche Telekom Services Europe is an internal services provider of Deutsche Telekom, one of the world's leading integrated telecommunications companies. Our shared mission is to put priority on customer satisfaction, quality and innovations in areas of finance and procurement services. We are on our way to become industry's top service company and we want you to be a part of the success story! 

Apply now and design with us the world of tomorrow.


What will be your key responsibilities:

Which challenges are expecting you:

Technical Leadership

  • Lead the end-to-end design and development of frontend and backend applications using Next.js, React, and Python.
  • Define and enforce best practices for architecture, code quality, and performance.
  • Mentor junior and senior developers, fostering a culture of technical excellence and continuous improvement.

Collaboration & Integration

  • Partner with backend developers to integrate REST APIs and ensure seamless service interaction.
  • Work closely with AI/ML engineers to visualize complex data and deliver intuitive interfaces.
  • Collaborate with customers and internal stakeholders to define, prioritize, and refine features.

Frontend Excellence

  • Lead the implementation of a UI component library for consistency and reusability across projects.
  • Apply responsive design principles to ensure performance across devices and platforms (iOS, Android, desktop).

Quality & Maintenance

  • Conduct and oversee code reviews, ensuring maintainability and adherence to architectural guidelines.
  • Troubleshoot and optimize application performance and usability.
  • Maintain and improve project documentation and user guides.

Continuous Improvement

  • Stay up to date with modern web technologies, frameworks, and DevOps tools (CI/CD, Docker, Kubernetes).
  • Share insights and innovations with the team to strengthen collective expertise.

We work in a HYBRID STYLE of working with the possibility of working from home , but twice a week we meet in the office in Košice or Bratislava for meetings.

The published salary is the minimum possible offer.
The starting salary may be higher depending on the extent of fulfillment of the employee's requirements (education, language skills, required practice, personality assumptions and skills).

What experience should you have:

Your skills:
• More than 10 years of experience of working in and leading backend and frontend development ideally in Data Science / Analytics projects.
• Strong problem-solving, communication, and technical leadership skills.
• Deep expertise in JavaScript (React, Next.js) and Python, with a strong grasp of RESTful API and microservice architecture design.
• Proven ability to architect and deliver scalable web applications and mentor developers on best practices.
• Solid experience with CI/CD, Docker, and preferably Kubernetes.
• Bachelor’s degree in Computer Science, Information Technology, or related field.


What do you get in return:

  • Annual bonus
  • Fully paid meal vouchers
  • Mobile phone also for private use
  • Discounts for selected Telekom products
  • Supplementary pension saving contribution
  • Cafeteria system of benefits/Multisport card
  • Sick days
  • Sports club & Health days
  • Teambuildings, summer & Christmas party
  • Opportunities for career growth
  • Referral program
  • Flexible working time
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