.NET Developer (Application Security)

Location: New York City, New York, United States

Hourly rate: $90–110/hour. W2 employment. Duration: 12 months.

Company

hirify.global provides on-demand talent, consulting, and outsourced services through a global network of more than 2,600 experts.

What you will do

• Remediate application-security vulnerabilities across primarily Microsoft .NET applications and services.
• Support security fixes in Java, Spring Boot, React, and TypeScript applications.
• Validate security findings, identify root causes, prioritize remediation, and resolve issues involving access control, injection, secrets, encryption, APIs, and insecure configurations.
• Upgrade vulnerable frameworks, libraries, packages, and dependencies while developing automated tests to prevent regressions.
• Integrate security scanning and controls into CI/CD pipelines and address vulnerabilities in Azure, containers, Kubernetes, and OpenShift environments.
• Coordinate release validation and issue closure, review code, mentor engineers, and supervise remediation work.

Requirements

• Six or more years of software-engineering experience with strong hands-on .NET expertise.
• Proficiency in C#, ASP.NET Core, Web API, Entity Framework, REST APIs, and microservices.
• Experience remediating vulnerabilities using OWASP, CWE, and CVE guidance, including findings from SAST, DAST, SCA, penetration testing, and code scans.
• Knowledge of OAuth, OIDC, JWT, RBAC, encryption, TLS, secrets management, and API security.
• Experience with Azure services such as App Services, Functions, API Management, and Key Vault, plus familiarity with Git, Docker, Kubernetes, OpenShift, and CI/CD platforms.
• Strong automated-testing, production-support, debugging, root-cause-analysis, communication, and technical-leadership skills; financial-services experience is required.

Culture & Benefits

• Hands-on engineering role embedded with application-development teams at a highly regulated global financial institution.
• Technical leadership and mentoring responsibilities without traditional people management.
• Medical, dental, vision, life, and disability insurance.
• 401(k) Savings Plan, Employee Stock Purchase Plan, professional development program, paid time off, and paid sick time where legally required.
• Equal opportunity and inclusive work environment focused on continuous learning and development.