Gavin has 20 years’ experience writing software in regulated environments and for global organisations. The last five years of his development career were spent with a focus on security, becoming the security lead for a significant payments project at a FTSE 100 company. He has experience with languages from COBOL to .Net and now often finds those skills useful when developing with Python. Gavin's experience of software security revealed a passion for security, leading him to become a speaker and blogger on the subject. Gavin holds the Certified Secure Software Lifecycle Professional (CSSLP) and Scrum Master certifications and is currently part of an offensive security team, using his defensive knowledge to aid offensive security work.