About Us

We do not limit ourselves in our actions, we do not limit ourselves in our responsibilities, we act together

At Z3X, our team is passionate about technology and innovation. Each member brings their own skills and creativity, helping us create the best products possible. We work closely together and focus on quality in everything we do. Our goal is to turn great ideas into reality, keeping Z3X a leader in the industry.

Zuza, Content Creator

Working as a Frontend Developer at Z3X is a very exciting opportunity to bring people ideas to life. One of the most thrilling aspects of everyday duties is collaborating with very talented and passionate team on unique, innovative and cutting-edge projects. While participating in everyday tasks You can really grow as a developer but also learn and enchance a lot of abilities. I am proud of being part of a Z3X.

Oliwier, Frontend Developer

A supportive atmosphere that encourages continuous learning and creativity. Our flexible environment allows for a balance between project goals and the freedom to explore new technologies and solutions. Every day comes with new challenges.

Maciek, Frontend Developer

Artificial Intelligence

Artificial Intelligence businesses need more than just a marketing partner – they need a dynamic collaborator with deep technical expertise.


We specialize in guiding FinTech businesses to unparalleled success through targeted campaigns, data-driven insights, and seamless customer experiences.


With Z3X, your cybersecurity solutions don’t just secure networks; they become a beacon of trust and innovation in a digital world.

Developer Tools

Our team comprises seasoned professionals with a deep understanding of both marketing dynamics and the intricate world of developer tools. We speak the language of developers and know how to make your tool resonate with the right audience.

E-commerce Solutions

With Z3X, your e-commerce aspirations aren’t just met; they’re exceeded, and your digital presence becomes a powerful catalyst for sustained growth and industry leadership.

Kinga Mówińska | HR&Operations Manager

You will be talking to me during the recruitment interview. The most important thing is to be yourself and be open to new challenges. Take part in our recruitment and I will be able to talk to you as soon as possible!

Karol Zielinski | CEO

As the CEO of z3x, I invite you to join our innovative and
forward-thinking tech marketing agency. Our primary focus is on FinTech,
but we also undertake ambitious projects for various technology
companies. We’re in a period of significant growth with exciting
long-term goals. At z3x, we value creativity, collaboration, and the
drive to push boundaries. Be a part of our journey and help shape the
future of tech.

Junior Python Developer

Are you a passionate coder looking to kickstart your career in software development? Join our innovative team as a Junior Python Developer and embark on a journey to build cutting-edge solutions. We’re seeking a talented individual with a strong foundation in Python and a hunger to learn and grow in a dynamic tech environment.


  • Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience). 
  • Strong understanding of Python fundamentals and coding principles. 
  • Knowledge of web development frameworks and libraries (e.g., Django) is a plus. 
  • Familiarity with version control systems (e.g., Git) and collaborative coding workflows. 
  • Ability to work both independently and as part of a team. 
  • Eagerness to learn and adapt to new technologies and programming languages. 
  • Excellent problem-solving and communication skills.

Content Writer

We are currently seeking a talented and ambitious Junior Content Writer/Copywriter to join our dynamic tech marketing agency. As a Junior Content Writer/Copywriter, you will play a crucial role in crafting engaging and persuasive content for our tech-focused clients. We are looking for someone with a passion for writing and a strong interest in the technology industry. If you have excellent English language skills and a flair for creative storytelling, this is the perfect opportunity to kickstart your career in content marketing.

Join our team of tech enthusiasts and creative minds, and gain valuable experience as a Junior Content Writer/Copywriter in our tech marketing agency. If you are eager to grow professionally and make an impact in the world of content marketing, we want to hear from you!


  • Proven passion for writing and a desire to pursue a career in content marketing.
  • Excellent written and verbal communication skills in English.
  • Basic knowledge of the technology industry and a willingness to learn more.
  • Familiarity with content management systems and basic HTML (experience with WordPress is a plus).
  • Ability to conduct research on various topics and turn complex information into engaging content.
  • Strong attention to detail and commitment to meeting deadlines.
  • Creative mindset with the ability to generate innovative content ideas.
  • Ability to work collaboratively as part of a team in a fast-paced agency environment.
  • Previous writing experience, such as blog posts or personal projects.

Software tester (Automatic + Manual)

We are seeking a Software Tester who will be responsible for conducting both manual and automated tests on our applications. The person in this position will collaborate with the development team to ensure the final product is of high quality and that the software testing process is efficient and effective.


  • Experience in software testing
  • Knowledge of software testing methodologies and tools
  • Ability to perform manual tests and create scripts for automated tests
  • Excellent communication skills and ability to work effectively in a team
  • Attention to detail and consistency in task execution

Mid Python Developer

We are seeking a motivated and responsible individual with experience in programming. The ideal candidate should possess the knowledge to share with the team and have strong communication skills.


  • Proficiency in Python and a basic understanding of an additional programming language
  • Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience)
  • Minimum of 2 years of experience in a similar position
  • Knowledge of frameworks and libraries for web development (e.g., Django)
  • Familiarity with version control systems (e.g., Git) and coding workflows
  • Ability to work independently as well as collaboratively within a team
  • Willingness to learn and adapt to new technologies and programming languages
  • Excellent problem-solving and communication skills