Principal .NET Engineer with IAM | W2 Only | Longterm | 3 Days a week Onsite

TMS LLC•Coppell, TX

2h•Hybrid

About The Position

The Principal Software Engineer is responsible for identification and development enterprise solutions. This role involves designing, architecting, and implementing secure authentication and authorization solutions using Identity and Access Management (IAM) principles to enable Single Sign-On (SSO) and secure access for internal and external applications, platforms, and APIs. The engineer will lead the implementation of modern identity standards, including OpenID Connect (OIDC) and OAuth 2.0, and build enterprise-grade integrations with Okta. This position requires close collaboration with various teams to define and evolve standard authentication and authorization patterns, document identity architectures, and provide business and project expertise. The role also includes responsibilities for application ownership, code development, testing, and production support.

Requirements

Master’s degree in a technical field + 3 years of work experience or bachelor’s degree in a technical field + 5 years related experience.
Experience designing, architecting, and implementing secure authentication and authorization solutions using IAM, SSO, OIDC, SAML, Oauth2.
Experience developing software for the US mortgage industry.
Adaptive leadership style, capable of leading multi-disciplinary teams with diverse skill sets and experience levels.
Excellent interpersonal, oral, and written communication skills.
Ability to respond quickly to sensitive issues, complex inquiries, or complaints from clients, co-workers and or management.
Strong analytical skills.
Proficiency with Okta integration and configuration.
Proficiency with ASP.Net / MVC / WebApi / C# / .Net 4.0+.
Proficiency with developing solutions around IAM / OIDC / OAuth2.
Proficiency with Design Patterns.
Proficiency with OOPS.
Proficiency with Web Services.
Proficiency with XML.
Proficiency with Sql Server 2012 and above.
Experience with Windows Services.
Experience in third party integrations.

Responsibilities

Design, architect, and implement secure authentication and authorization solutions using Identity and Access Management (IAM) principles to enable Single Sign-On (SSO) and secure access for internal and external applications, platforms, and APIs.
Lead the implementation of modern identity standards, including OpenID Connect (OIDC) and OAuth 2.0, supporting a variety of use cases such as web applications, mobile applications, B2B integrations, and service-to-service communication.
Build and maintain enterprise-grade integrations with Okta, enabling application onboarding, federation, and secure access to protected resources in alignment with organizational identity standards.
Partner closely with architecture, platform, security, and product teams to define and evolve standard authentication and authorization patterns, ensuring consistency, scalability, and security across the enterprise.
Document identity architectures, integration patterns, and operational guidance, enabling development teams and platform teams to efficiently onboard applications and troubleshoot authentication and authorization issues.
Responsible for one or more applications, working with Business Systems Manager and Business Analyst counterparts on planning and delivering code changes to production, ensuring teams work on schedule.
Provide business and project expertise when collaborating with clients, IT resources, vendors, consultants and other stakeholders to identify the user requirements, assess technologies, recommend and implement technical solutions.
Participate in estimation process.
Responsible for source code development; create technical documentation; utilize software configuration, version and quality management processes.
Responsible for unit testing, performance tuning, defect remediation during testing, and deployment planning.
Participate in Production Support Escalation if necessary for high-severity issues within their application domain.
Can analyze, design and develop complex programming systems independently.
Chair Agile Team meetings.
Performs related duties as assigned by management.