Full Stack Developer

About this role

OneSource Virtual (OSV) has helped more than 1,000 Workday customers take their teams from transactional to transformational with innovative technology and services for HR, payroll, and finance. Founded in 2008, OSV is the leading exclusive provider of Business-Process-as-a-Service (BPaaS) solutions for Workday, delivering services with unparalleled choice, unwavering commitment, and uncompromising support. OneSource Virtual’s global headquarters is located in Dallas, Texas, with additional locations across North America and Europe. Find your company’s solution at www.onesourcevirtual.com.

Position Summary

OneSource Virtual is seeking a Full Stack Developer to join our product engineering team. This is a staff-level individual contributor role for a developer who can work independently across the full stack, deliver high-quality features with no supervision, and actively contribute to the team’s technical direction. You will build and maintain software across C#/.NET services, React UI, and SQL on platforms that process over $200 billion in compliant payroll and tax payments annually.

We are an AI-first engineering organization. The expectation at this level is not just that you use AI tools — it is that you use them fluently, set a good example for less experienced teammates, and contribute to how the team evolves its AI-assisted practices over time.

Responsibilities

Development

• Execute all phases of the software development lifecycle — design, development, testing, bug fixes, refactoring, and technical debt reduction
• Work full stack stories independently using simple, clean design solutions with a low defect rate
• Implement software using the Microsoft stack (C#/.NET, Entity Framework, MVC) deployed in Azure/AWS cloud environments
• Build and consume REST and SOAP web services; develop and maintain React front-end components
• Perform data modeling tasks that match established best practice patterns and standards
• Participate actively in wo...