As a Senior .NET Developer, you will make an impact by strengthening the security posture of enterprise applications through vulnerability analysis, remediation, and secure software development practices. In this role, you will bridge software engineering and enterprise security by analyzing SAST/DAST/SCA scan results, performing root-cause analysis on vulnerabilities, and directly writing and deploying secure .NET code fixes. Leveraging contemporary DevSecOps practices and AI-assisted engineering tools (such as GitHub Copilot and Claude), you will accelerate vulnerability remediation and enforce secure coding standards across production pipelines.

Analyze and remediate application security vulnerabilities identified through SAST, DAST, SCA, and penetration testing assessments. Implement secure coding practices across .NET applications in alignment with OWASP standards and industry best practices. Review, investigate, and resolve security findings generated by tools such as Checkmarx, Fortify, AppScan, SonarQube, and similar platforms to evaluate risk and validate security patches.

Perform root cause analysis of security issues and implement sustainable remediation strategies to prevent recurrence. Collaborate with development, architecture, DevOps, and security teams to ensure timely resolution of identified vulnerabilities.

Support

Secure SDLC initiatives and ensure compliance with organizational and client application security requirements. Conduct code reviews with a strong focus on security, maintainability, and application performance. Integrate automated security gates into CI/CD pipelines and utilize AI-driven tools (GitHub Copilot, Claude)



to accelerate code reviews, threat analysis, and remediation workflows.

Provide technical guidance and mentorship on secure development practices and vulnerability prevention. Based on this role's business requirements, this is a remote position open to qualified applicants in Canada. This may change based on the project you're engaged in, as well as business and client requirements.

NET development background with proven experience in identifying and fixing application vulnerabilities. ~ Must have strong hands-on experience in vulnerability remediation and security fixes for internet-facing applications. ~ Demonstrated experience remediating OWASP Top 10 vulnerabilities, security findings, and secure coding issues in production applications. ~ Experience supporting and securing internet-facing web applications, APIs, and cloud-hosted services. ~ Ability to independently analyze scan reports, perform root-cause analysis, and implement remediation with minimal ramp-up. ~ Familiarity with CI/CD security integration and DevSecOps practices. ~ Experience leveraging AI-assisted development and security tools (GitHub Copilot, Claude similar) to accelerate vulnerability analysis, code remediation, secure code reviews, and developer productivity. ~ We regularly assess market data to ensure we offer a competitive compensation package for our associates. The base salary for this position ranges between CAD 70,000 – 93,000 per year. This position is also eligible for Cognizant's discretionary annual performance-based bonus, as well as benefits that support your physical, mental and financial wellbeing.

📌 Senior .NET Developer - Application Security (Halifax Regional Municipality)
🏢 Cognizant Technology Solutions
📍 Halifax Regional Municipality