SIX drives the transformation of financial markets.


What sets us apart drives us ahead: between local roots and global relevance, we are a unique blend of tradition and future, of foundation and growth. We value bright minds and inspire them to grow with their ideas. Come and shape the future of finance with us.



 Senior C/C++ Software Engineer

Warsaw | working from home up to 60% | Reference 6252



Are you seeking a challenging opportunity to lead the evolution of large-scale, business-critical systems?
Are you passionate about cutting-edge technology?
Do you thrive in an agile, self-organized environment that values collaboration, trust, and innovation?
If so, our Data Intake Team wants to hear from you. We are seeking talented individuals to join us and drive our progress forward.
In this role, you will work in a diverse environment, closely collaborating with various business units and serving both internal and external clients.



What You Will Do

  • maintain and enhance business-critical applications for financial information
  • develop high-performance and low-latency C/C++ code while mentoring and guiding less experienced engineers
  • renew, further develop, and maintain data intake systems
  • create and maintain technical and operational documentation
  • drive the change to further develop the technical architecture, such as transitioning from a single-process to a multi-threading approach

What You Bring

  • proven experience in high-performance C/C++ development
  • experience working within a Linux environment and familiarity with Perl or Python and CI/CD tools (git, Jenkins, Artifactory, Ansible)
  • ability to work independently and collaboratively, with strong interpersonal skills; strong interest in learning new technologies and concepts, with knowledge of financial market data being advantageous
  • ability to thrive in fast-paced and agile environments (SAFe agile framework) 
  • excellent verbal and written English skills; knowledge of Polish or German is a plus

If you have any questions, please call Gabriela Swiatek at +48 22 104 67 70 / +41 43 250 00 00.


For this vacancy we only accept direct applications in English.


Diversity is important to us. Therefore, we are looking to receiving applications regardless of any personal background. 

What We Offer

Flexible Work Models
We trust our employees and offer a work environment that is well-balanced, productive and fosters success. 

Personal Development
You will benefit from a culture of continuous learning and feedback. Your personal growth is supported through an extensive learning offering.

Agile Working Methods 
Whether through scrum or design thinking,
we solve exciting tasks together in teams.