.Net Developer

RGP is seeking a senior Software Engineer – Application Security. This is a hands-on engineering role embedded with application-development teams at a highly regulated global financial institution. The role will focus on analyzing and fixing application-security vulnerabilities across a primarily Microsoft .NET technology estate, with additional support for Java and React applications. This successful candidate will personally deliver complex code remediation while providing technical direction, code-review support, and day-to-day supervision to engineers working through the vulnerability backlog. This is not a traditional people-management position; the emphasis is on hands-on engineering, technical leadership, and the safe delivery of production-ready fixes. Hourly Rate: $90-110/hr. W2 Duration: 12 months Location: New York, New York

Embed with engineering teams to remediate vulnerabilities across .NET applications and services. Support security fixes in Java, Spring Boot, React, and TypeScript applications as needed. Validate security findings, determine root causes, and prioritize remediation based on risk. Resolve issues involving access control, injection, secrets, encryption, APIs, and insecure configurations. Upgrade vulnerable or unsupported frameworks, libraries, packages, and dependencies. Develop automated tests to confirm fixes and prevent functional regressions. Integrate security scanning and controls into CI/CD pipelines. Address vulnerabilities affecting Azure services, containers, Kubernetes, and OpenShift environments. Coordinate remediation, release validation, evidence, and issue closure with security and risk teams. Review code, mentor engineers, supervise remediation work, and identify recurring vulnerability patterns.

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. Practical experience remediating vulnerabilities using OWASP, CWE, and CVE guidance. Experience interpreting findings from SAST, DAST, SCA, penetration testing, and code scans. Knowledge of OAuth, OIDC, JWT, RBAC, encryption, TLS, secrets management, and API security. Working knowledge of Java, Spring Boot, React, and TypeScript. Experience with Azure services, including App Services, Functions, API Management, and Key Vault. Familiarity with CI/CD platforms, Git, Docker, Kubernetes, or OpenShift. Strong automated-testing, production-support, debugging, and root-cause-analysis skills. Financial-services experience with the ability to lead, mentor, and communicate across teams.

An inspirational place for you to do your best work, be engaged in meaningful ways, and continually develop the skills, competencies and qualities that set our team apart. Compensation commensurate with your qualifications, experience, and other factors including geographic location, market and operational factors. Total Rewards include: Medical, Dental, Vision, Life Insurance, Disability Insurance, 401(k) Savings Plan, Employee Stock Purchase Plan, Professional Development Program, Paid Time Off and Paid Sick Time (in geographies where legally required).

At RGP, we're creating a future where businesses produce their best work without constraints. We've built a global network of over 2,600 experts across four regions, providing a comprehensive suite of solutions across on-demand talent, next-generation consulting, and outsourced services to support organizations at every stage of their growth journey. Trusted by Fortune 100 companies and emerging disruptors alike, we challenge conventional ways of working, drive growth, and pave the way for long-term success through bold innovation and fearless collaboration. Our values guide everything we do and strengthen our commitment to people. By combining smart processes, human-centered design, and advanced technology, we celebrate our team's excellence and ensure we grow together. We believe in the power of continuous learning and development to drive both individual and organizational success. It’s time to rethink how work gets done. Dare to Work Differently® with RGP. RGP is proud to be an Equal Opportunity Employer and committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, color, religion, national origin, gender, pregnancy, sexual orientation, gender identity, age, physical or mental disability, genetic information, veteran status, or any other legally protected trait and encourage all applicants to apply.