BME - Bolsas y Mercados Españoles - drives the transformation of financial markets and belongs to SIX, the third largest exchange group in Europe.


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.



 WAF Security Engineer

Madrid | working from home up to 60% | Reference 6175



SIX is looking for a motivated, talented and experienced WAF Security Engineer, who is passionate about innovation, to help us build and run a highly secure, scalable and automated Web Access Management Platform.
We are ‘T-shaped’ Engineers with international team set-up located in Spain, Switzerland and Poland. You will work cross-functional with Architects, Solution Engineers and Cyber Security Analysts across multiple teams and take E2E responsibility i.e. from evaluation, design, implementation and support.
The team is the hub when it comes to engineering of modern web, soap and API based authentications / authorization methods. Confidentiality and Integrity with a modern and still “state-of-the-art” WAF functionality, to keep our environment safe is the key to our success.  As a WAF Engineer, you are responsible for protecting customer and company data from potential attacks in every situation. You keep your skills updated with latest developments in the cyber security and provide our business and IT customers with innovative and modern solutions.



What You Will Do 

  • operate and maintain the Web Access Platform 
  • use your interpersonal skills to consult business and IT stakeholders to integrate mission critical solutions
  • implement &  improve Security Standards, build and maintain CI/CD Pipelines
  • participate in security assessments and audits, build-up and transfer interdisciplinary knowledge
  • provide tier L2 / L3 support for incidents related to the WAF / IDM solution (On-call duties needed)

What You Bring 

  • proven experience with WAF, OWASP Top 10 and IAM Solutions
  • knowledge of various Authentication methods such as O-Auth, OpenID Connect and SAML 
  • hands-on experience with debugging and troubleshooting, proficiency with Linux OS and scripting skills such as Perl, Python, etc.
  • strong work-ethic, able to work in T-Shaped & Agile Scrum Team Setup, communicative team-player, able to coordinate, steer, and make decisions
  • excellent communication and presentation skills in spoken and written English
  • willing to participate in on-call duty

If you have any questions, please call Gabriela Swiatek at +48 22 104 67 70.


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.