Senior Full Stack Developer — B2B Pipeline
About the Role
We are looking for a Senior Full Stack Developer to take technical ownership of key capabilities within our B2B SaaS platform and partner pipeline.
This is a hands-on engineering role for an experienced developer who has previously built or supported B2B SaaS capabilities such as enterprise authentication/SSO, third-party API integrations, payment workflows, multi-tenant applications, partner administration, and customer-facing analytics.
The developer will work primarily within a Laravel/PHP-based platform supporting multiple partner types, from smaller co-branded organizations to larger enterprise customers requiring deeper integrations and configurable workflows.
The ideal candidate can independently take a business requirement from discovery through technical design, development, testing, and production deployment. We are specifically looking for someone whose prior experience aligns with the capabilities on our B2B roadmap—not simply a generalist full stack developer.
Key Responsibilities
- Own and deliver B2B features and modules from requirements and technical design through development, testing, deployment, and ongoing support.
- Design and develop scalable, secure backend services and application functionality using Laravel and PHP.
- Design and maintain multi-tenant SaaS architecture supporting multiple business partners while maintaining appropriate separation of partner configuration and data.
- Build and enhance enterprise authentication and Single Sign-On (SSO) integrations for external partner organizations.
- Design and implement API integration frameworks that allow partner applications and portals to securely interact with the platform.
- Develop and maintain RESTful APIs, webhooks, application routing, and other integration mechanisms for real-time and asynchronous communication with external systems.
- Implement and maintain payment integrations and B2B payment workflows, including payment