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

Posted Yesterday
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Coppell, TX, USA
In-Office
Senior level
Information Technology • Internet of Things
Qualified, Reliable, Viable
The Role
Design, architect, and implement enterprise authentication and authorization solutions (IAM/SSO) using OIDC, OAuth2, and SAML. Build Okta integrations, partner with architecture/security/product teams, document patterns, develop .NET applications, perform unit testing and production support, and lead agile teams to deliver secure identity solutions for mortgage-industry applications.
Summary Generated by Built In
Job Description

Job Title: Principal Software Engineer-IAM

Duration: 6+ Months Contract to Hire

Location: Coppell-HYBRID 3 days

Position Summary:

The Principal Software Engineer is responsible for identification and development enterprise solutions.

Principal Duties:

  • 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.

Education and Experience

  • 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.

Knowledge, Skills, and Abilities

  • 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
    • ASP.Net / MVC / WebApi / C# / .Net 4.0+
    • Developing solutions around  IAM / OIDC / OAuth2
    • Design Patterns
    • OOPS
    • Web Services
    • XML
    • Sql Server 2012 and above
    • Experience with Windows Services
  • Experience in third party integrations.

Additional Information

All your information will be kept confidential according to EEO guidelines.

Skills Required

  • Master's degree in a technical field plus 3 years experience OR Bachelor's degree in a technical field plus 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
  • Okta integration and configuration experience
  • Proficiency with ASP.Net, MVC, WebApi, C#, .NET 4.0+
  • Experience developing solutions around IAM / OIDC / OAuth2
  • Knowledge of Design Patterns and Object Oriented Programming (OOP)
  • Experience with Web Services and XML
  • Experience with SQL Server 2012 and above
  • Experience with Windows Services
  • Experience with third-party integrations
  • Adaptive leadership and ability to lead multi-disciplinary teams
  • Excellent interpersonal, oral, and written communication skills
  • Ability to participate in estimation, unit testing, performance tuning, defect remediation, and deployment planning
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The Company
HQ: Parsippany, NJ
65 Employees
Year Founded: 2009

What We Do

Technology Management Solutions (TMS, LLC), headquartered in Parsippany, New Jersey, is a premier IT company specializing in digital product engineering and innovative technology solutions. Since our inception in 2021, we have empowered businesses across industries—Financial Services, Retail, Medical, Entertainment, Manufacturing, and Automotive—to achieve their digital transformation goals. Our mission is to design and deliver cutting-edge solutions that drive growth, streamline operations, and enhance modern digital experiences.At TMS, we partner with our clients throughout the entire product development lifecycle, from ideation to commercialization. Our expertise spans next-generation technologies, including Artificial Intelligence (AI), Machine Learning (ML), Internet of Things (IoT), and custom software development. With tailored engagement models, we accelerate product development, ensuring faster time-to-market and measurable success.

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