Full Stack Developer (.NET/React) – Security Remediation & Modernization- INTL Colombia

Full Stack DeveloperRequired Skills & Experience:• 5-6+ years of full stack development experience using.NET (C#/.NET Core, Web APIs) and React• Experience developing, enhancing, and supporting React-based user interfaces and.NET backend services/APIs• Experience troubleshooting, maintaining, and modernizing enterprise and legacy applications, including resolving technical debt and application performance issues• Experience building and consuming RESTful APIs, working with JSON, SQL databases, and database-driven applications• Recent hands-on experience remediating security vulnerabilities identified through tools such as Snyk, SonarQube, Burp Suite, or similar platforms• Experience resolving findings from security scans, penetration tests, audits, SAST/DAST, dependency scans, and OWASP Top 10 vulnerabilities• Experience implementing front-end and back-end code changes to support security, accessibility, and compliance initiatives• Experience deploying code and security fixes through CI/CD pipelines (TeamCity, Octopus, Azure DevOps, GitHub Actions, etc.)• Strong understanding of secure coding practices, API security, authentication/authorization, and application hardening• Ability to collaborate effectively with Security, DevOps, QA, and Compliance teams in a remote environment• Experience working successfully in a remote/work-from-home environment• Comfortable supporting PST business hours• Highly preferred: Experience supporting U.S.-based clients, stakeholders, or development teamsJob Description:We are seeking a Full Stack Developer to support and modernize enterprise applications in a fully remote environment. This role focuses on maintaining and enhancing legacy applications that support critical business functions while helping improve performance, stability, and long-term scalability.A key responsibility will be security vulnerability remediation. The developer will regularly review and resolve findings from tools such as Snyk, SonarQube, Burp Suite, and other security scanning platforms. This includes investigating vulnerabilities, implementing front-end and back-end code fixes, validating remediation efforts, and deploying updates through CI/CD pipelines. Candidates should have recent hands-on experience addressing findings from security scans, penetration testing, audits, SAST/DAST tools, and OWASP-related vulnerabilities.Day-to-day responsibilities include developing and supporting.NET and React applications, resolving technical debt, participating in code reviews, deploying secure code changes, and partnering with Security, DevOps, QA, and Compliance teams to ensure applications remain secure, compliant, and reliable*Must be okay working PST/MST time zone