Cognizant

Senior .NET Developer – Application Security

Cognizant
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3 days ago
Halifax, CanadaSenior

Responsibilities

  • Analyze and remediate application security vulnerabilities identified through SAST, DAST, SCA, and penetration testing.
  • Write, deploy, and validate secure .NET code fixes for production applications.
  • Perform root-cause analysis and implement sustainable remediation strategies for security issues.
  • Apply OWASP-aligned secure coding practices across .NET applications.
  • Review security findings from Checkmarx, Fortify, AppScan, SonarQube, and similar platforms.
  • Collaborate with development, architecture, DevOps, security, and client teams to resolve vulnerabilities.
  • Support Secure SDLC initiatives and application security compliance requirements.
  • Conduct security-focused code reviews and integrate automated security gates into CI/CD pipelines.
  • Use GitHub Copilot and Claude to accelerate code reviews, threat analysis, and remediation workflows.
  • Provide technical guidance and mentorship on secure development and vulnerability prevention.

Requirements

  • 6+ years of .NET development experience with demonstrated application vulnerability identification and remediation.
  • Strong hands-on experience remediating security issues in internet-facing applications.
  • Hands-on experience with DAST, SAST, and SCA tools such as AppScan, Checkmarx, and SonarQube or equivalents.
  • Experience remediating OWASP Top 10 vulnerabilities and secure coding issues in production applications.
  • Experience 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 using AI-assisted development and security tools such as GitHub Copilot and Claude.
  • Strong communication skills and ability to work directly with client stakeholders.

Benefits

  • Remote position open to qualified applicants in Canada.
  • Benefits and wellbeing programs supporting physical, mental, and financial wellbeing.
  • Eligible for a discretionary annual performance-based bonus.
  • Base salary range of CAD 70,000–93,000 per year.

Tech Stack

.NETSonarQube

Categories

Cognizant

About Cognizant

10,000+ employees

Cognizant is a public IT services and consulting firm that designs, builds, and runs enterprise technology, including digital engineering, cloud modernization, data/AI, and managed services. It sells consulting, systems integration, and outsourcing on multi-year engagements to large enterprises in healthcare, banking, retail, communications, and manufacturing. Founded in 1994 and headquartered in Teaneck, New Jersey, Cognizant is NASDAQ-listed (CTSH) and a Fortune 500 company.

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