Hello :)

I am Cássio Pereira,
Application Security Expert

#AppSec #DevSecOps
Cássio B. Pereira

About Me.

Cassio Batista Pereira, a.k.a. @cassiodeveloper, is a Software Developer and Architect by formation. He is currently an #AppSec Expert and thus helps companies, teams and professionals to build safer solutions.

He has two decades of experience in the IT market and Information Security in the most varied business segments, where he gained knowledge to work with different technologies, programming languages and processes. He is an evangelist for the Secure Development culture.

Experience

  • StoneXApplication Security Evangelist
  • Nova8CTO & Country Director
  • BackbaseApplication Security Specialist
  • ABBPrincipal Application Security
  • CVC CorpPrincipal Application Security
  • OthersWriter, Teacher, Community Manager, Podcaster, Speaker...

Certificates

  • Forensics ComputingUniversidade Presbiteriana Mackenzie 2015
  • Software ArchitectFIAP - 2012
  • Software DeveloperFIAP - 2009

Skills

  • Product Security
  • Security Architecture
  • Application Security
  • S-SDLC
  • Application Security Testing
  • Cloud Security
  • DevSecOps
  • Leadership and training

Projects

Codes & Consequences is an educational and strategic game that simulates the real-world challenges of secure software development. Players take on roles within tech teams and face critical decisions between investing in features or security. The journey unfolds through development cycles inspired by agile methodologies, while players encounter real-world vulnerabilities, incidents, unexpected events, and cyber threats. The goal is to deliver a functional and secure system by balancing reputation, resources, and risk.C&C.

BSides events combine security expertise from a variety of platforms in search of the “next big thing” in information security. BSides is an open platform that gives security experts and industry professionals the opportunity so share ideas, insights, and develop longstanding relationships with others in the community. It is a rare opportunity to directly connect and create trusted relationships with key members of the community.BSides Kraków.

The DevSecOps Podcast is a space dedicated to the in-depth exploration of Application Security and DevSecOps, bringing objective and relevant discussions about best practices, challenges and trends in the integration of security into software development. With episodes aimed at both experienced professionals and those who are just starting out in the field, the podcast presents technical insights, interviews with experts and analyses of real cases, always focusing on the practical application of security in the development cycle.DevSecOps Podcast.

We are a chapter of the Global DevSecCon Community, an inclusive community that educates and enables developers in application security. If you’re a security enthusiast & you want to learn more about how to better secure your team, then check out our community & resources.DevSecCon Poland.

My main goal with this book is to further spread the culture of safe development. It is very rare to find this type of content in Portuguese and even in English, as the market increases the demand every day, there is a lack of professionals to work in this area. Another important point is, our life is controlled by software, they need to be as safe as possible. Therefore, it is important that all involved in the Software Development Cycle (SDL), read and have access to this type of content.Book.

My main goal with this book is to further spread the culture of safe development. It is very rare to find this type of content in Portuguese and even in English, as the market increases the demand every day, there is a lack of professionals to work in this area. Another important point is, our life is controlled by software, they need to be as safe as possible. Therefore, it is important that all involved in the Software Development Cycle (SDL), read and have access to this type of content.Download.

As I always say...

Cássio Pereira Cássio Pereira Application Security Expert

I don’t just fix vulnerabilities — I build digital fortresses.

Cássio Pereira Cássio Pereira Application Security Expert

Security isn’t a feature. It’s a foundation.

Cássio Pereira Cássio Pereira Application Security Expert

From legacy systems to cloud-native stacks — I make them all bulletproof. (I try at least)

Cássio Pereira Cássio Pereira Application Security Expert

Security is everyone's responsibility.

30 +
Happy customers

Companies, teams and professionals. Happy clients. Decades of building trust through secure code and real results.

120 +
Projects Completed

From strategy to execution — huge amount of security projects delivered, each one strengthening the digital world.

+
Lines of Code

Countless lines of code scanned. Vulnerabilities prevented. Software made safer — one commit at a time.

10 +
Countries

Securing software across borders — from Brazil to the world.