Sr. .Net Engineer x4

Senior .NET Developer

Join a dynamic team working on a customer-facing platform for Corporate Payments. This platform includes user interfaces, APIs, webhooks, and data streams, and is undergoing a major transformation to enhance security and identity management.

Key Responsibilities:

• Security Integration: Implement a new security framework using OAuth protocols and One WEX Identity (OWI). Experience with tools like Auth0 and modern authentication methods is essential.
• Legacy System Modernization: Update existing SOAP services and .NET technologies to align with new security standards.
• User Identity Management: Strategically separate and migrate identity data between service users and human users to support new ID structures.
• Platform Migration: Support the migration of the EnCompass platform to OWI to ensure compliance and mitigate risk.
• Infrastructure Support: Work within an AWS-hosted environment, with a focus on integration and security rather than infrastructure.

Required Skills:

• 58 years of experience in .NET development
• Strong understanding of OAuth or similar authentication protocols
• Proven experience with APIs (SOAP preferred; REST acceptable)
• Solid background in unit and integration testing
• AWS experience is a plus

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.