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May 7, 2026

Senior Node.js Developer – Digital Advertising and Backend Solutions

Senior • On-site

18,900 - 22,848 PLN

Krakow, Poland

Unleash the Future of Digital Advertising — Drive Innovation as a Senior Node.js Developer!

Warsaw-based opportunity with a hybrid and remote work model (up to 5 days remote per week).

As a Senior Node.js Developer, you will be working for our client, a leading player in the media industry. You will join a dynamic team focused on developing and maintaining cutting-edge backend applications within the digital advertising ecosystem, leveraging distributed architectures, identity technologies, and innovative solutions. This is your chance to contribute to the evolution of advertising technology and be part of a forward-thinking environment fostering growth and innovation.

Your main responsibilities:

  • Develop and maintain backend applications (Node.js, NestJS) for digital advertising serving and identity management.
  • Create and enhance automated tests, tools, and monitoring solutions to ensure robust performance.
  • Participate actively in brainstorming and co-creating new directions for the advertising ecosystem (R&D).
  • Engage in the full software development lifecycle, from requirements analysis to deployment, maintenance, and monitoring.
  • Collaborate with cross-functional teams to optimize system performance and scalability.

You're ideal for this role if you have:

  • Higher education, preferably in Computer Science.
  • At least 5 years of programming experience in IT projects.
  • Minimum 5 years of hands-on experience in Node.js development.
  • Strong knowledge of application design, performance optimization, and monitoring.
  • Proficiency in Node.js, TypeScript, and frameworks such as NestJS and Fastify.
  • Experience working with databases like MongoDB and Redis.
  • Familiarity with AWS services, including S3.
  • Solid understanding of object-oriented and functional programming in JavaScript.
  • Knowledge of event-driven development, design patterns, and best practices.
  • Experience with version control systems like Git and GitHub.
  • Awareness of Babel tools and development in Unix environments, including Bash scripting.
  • Willingness for continuous professional growth.
  • Good command of English for reading and writing technical documentation.

It is a strong plus if you have:

  • Knowledge of digital and programmatic advertising.
  • Experience with React.js and NoSQL databases.
  • Familiarity with Jenkins, Datadog, and test frameworks like Jest, Jasmine, Karma, Cypress.
  • Experience working in Agile, Scrum, or Kanban methodologies.

Language Required for the role:

  • Polish (Communicative level)

Eligibility to work in Europe:

  • Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.