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Senior Application Security Analyst

Entain

Sofia, Sofia-Capital, Bulgaria Hybrid permanent

Posted: February 20, 2026

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Quick Summary

Conduct in-depth security assessments, identify vulnerabilities, and implement security controls to protect Entain's application

Job Description

Sports betting, gaming and interactive entertainment is changing, and we’re leading that change. By putting people first. By placing exciting, engaging and entertaining experiences at more fingertips than ever before. We're pulling into pole position by pushing boundaries further. With innovation. With technology. But most importantly, with people like you. Because when you join Entain, it’s your game. So let’s win together.

The Senior Application Security Analyst responsible for conducting in-depth security assessments, identifying vulnerabilities, and implementing security controls to protect applications from potential threats. This role involves analysing application code, performing security testing, and collaborating with development teams to remediate security issues and plays a key role in enhancing the security posture of applications and ensuring compliance with relevant security standards and regulations.

• Conduct comprehensive security assessments, code reviews, and penetration testing of applications to identify potential vulnerabilities and security risks. utilise industry-standard tools and methodologies to assess the security posture of applications and provide actionable recommendations for remediation.

• Identify, prioritise, and track security vulnerabilities identified during security assessments. Work closely with development teams to facilitate the remediation of vulnerabilities in a timely manner. Monitor the effectiveness of remediation efforts and ensure that security vulnerabilities are addressed effectively.

• Manage and maintain security tools and technologies used for application security testing and monitoring. Configure, deploy, and optimise security tools such as static code analysis (SAST), dynamic application security testing (DAST), and web application firewalls (WAFs) to enhance the security posture of applications. and implement corrective actions to prevent future occurrences.

• Provide support during security incidents related to applications, including incident detection, analysis, and response. Collaborate with incident response teams to investigate security incidents, identify root causes,

• Promote a culture of security awareness among development teams and stakeholders through training sessions, workshops, and awareness campaigns. Educate colleagues on secure coding practices, threat mitigation techniques, and compliance requirements.

• Maintain detailed documentation of security assessments, findings, and remediation efforts. Generate regular reports and metrics on application security activities, vulnerabilities, and compliance status to stakeholders and management.

• Collaborate closely with development teams, architects, IT operations, and security stakeholders to integrate security into the software development lifecycle. Communicate effectively with stakeholders to articulate security risks, requirements, and recommendations in a clear and concise manner.

• Identify opportunities for process improvement, optimization, and automation in application security practices. Stay abreast of emerging threats, vulnerabilities, and security trends in the application security landscape and recommend appropriate measures to mitigate risks.

• Software Development Background
• At least five years experience in a similar Information Security position
• Customer-oriented person, with the ability to educate and influence a technical audience on Application Security matters
• Fluent in relevant development languages (Java, C/C++, Perl, PHP, .NET, Python …)
• Experience in the following areas:• Security Test Management
• Application Security Assessments
• Security Assurance
• Requirements Management
• Knowledge of major frameworks and support libraries (SPRING, OSGI, ASP.NET, etc.)
• Agile Development
• Vulnerability management
• Continues Improvements
• Penetration Testing
• Security Evaluation & Functional Testing
• Application Security Testing

At Entain, we do what's right. It's one of our core values and that's why we're taking the lead when it comes to creating a diverse, equitable and inclusive future - for our people, and the wider global sports betting and gaming sector. However you identify, our ambition is to ensure our people across the globe feel valued, respected and their individuality celebrated. 

We comply with all applicable recruitment regulations and employment laws in the jurisdictions where we operate, ensuring ethical and compliant hiring practices globally.

At Entain, we do what's right. It's one of our core values and that's why we're taking the lead when it comes to creating a diverse, equitable and inclusive future - for our people, and the wider global sports betting and gaming sector. However you identify, our ambition is to ensure our people across the globe feel valued, respected and their individuality celebrated. 

We comply with all applicable recruitment regulations and employment laws in the jurisdictions where we operate, ensuring ethical and compliant hiring practices globally.

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