Website:
ekshvaku.com
Job details:
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 processors, invoicing, configurable partner payment options, and business-sponsored payment models.
- Build administrative functionality that allows partner-specific settings and configurations to be managed without requiring custom development for each customer.
- Develop B2B dashboards and reporting capabilities, including metrics related to utilization, conversions, transaction/visit volume, and revenue.
- Implement appropriate authorization and data-access controls to ensure users and partner organizations can access only the information appropriate to their roles.
- Support configurable partner experiences, including partner-specific branding, content, legal documentation, workflows, and integrations.
- Establish and maintain regression coverage for existing B2B functionality to protect platform stability as new partner capabilities are introduced.
- Troubleshoot complex application and integration issues across the full technology stack.
- Participate in technical design decisions and identify opportunities to create reusable platform capabilities rather than one-off partner customizations.
- Communicate directly with product, business, and client-facing stakeholders to translate partner requirements into practical technical solutions.
- Provide technical estimates, identify dependencies and risks, and communicate implementation tradeoffs before development begins.
- Write clean, maintainable, secure, and well-documented code and participate in peer code reviews.
Required Skills & Experience
- 4+ years of professional full stack development experience, including ownership of production application features or modules.
- Strong hands-on experience with Laravel and PHP in production environments.
- Demonstrated experience building or maintaining B2B SaaS or multi-tenant applications serving multiple organizations or customers.
- Prior experience implementing or integrating Single Sign-On (SSO), federated authentication, or enterprise identity solutions for external customers or partner organizations.
- Strong experience designing, building, and consuming APIs and third-party integrations.
- Experience implementing webhooks and event-driven integrations with external platforms.
- Experience integrating payment processors or payment gateways into production applications and supporting non-trivial payment or billing workflows.
- Experience designing role-based authorization and data-access controls, particularly where information must be segmented by organization, customer, or user role.
- Strong understanding of application routing, authentication, authorization, API security, and secure web application development.
- Experience developing within a multi-tenant architecture, including tenant-aware data access, configuration, and application behavior.
- Full stack development capability, including JavaScript and modern front-end technologies sufficient to independently deliver customer- and administrator-facing functionality.
- Experience working with relational databases and designing data models supporting complex application workflows.
- Experience with automated testing and regression testing of production applications.
- Demonstrated ability to independently own features from requirements through production deployment.
- Strong troubleshooting and problem-solving skills across application, integration, database, and external-service boundaries.
- Strong written and verbal communication skills with demonstrated ability to work directly with technical and non-technical stakeholders.
Preferred Experience
- Hands-on experience with enterprise identity standards and technologies such as SAML 2.0, OAuth 2.0, and OpenID Connect (OIDC).
- Experience integrating Stripe or comparable payment platforms into SaaS applications.
- Experience supporting multiple payment models, such as direct consumer payments, business-sponsored transactions, invoicing, or partner-managed payment gateways.
- Experience building partner/customer administration portals that allow organizations to manage their own configuration.
- Experience developing customer-facing analytics dashboards, including conversion, utilization, transaction, or revenue metrics.
- Experience developing configurable or dynamically generated partner-specific content, branding, legal documents, or workflows.
- Experience designing reusable integration frameworks that support multiple external partners without requiring separate custom implementations for each partner.
- Experience working in environments handling sensitive or regulated data, with an understanding of data segregation, least-privilege access, and secure application design.
- Experience with healthcare, telehealth, or other regulated SaaS environments is beneficial but not required.
- Experience working directly with B2B customers, implementation teams, product teams, or business stakeholders during technical discovery and integration planning.
Technical Competencies
The strongest candidates will demonstrate practical experience across several of the following areas:
B2B SaaS & Multi-Tenancy
Ability to design application functionality that can support multiple organizations, configurations, and partner workflows from a common platform without creating unnecessary customer-specific code.
Enterprise Authentication & SSO
Experience integrating external organizations into centralized authentication workflows and troubleshooting identity and access issues across organizational boundaries.
API & Partner Integration Architecture
Ability to design secure, maintainable APIs and integration patterns that allow external partner systems to interact reliably with the platform.
Payments & Billing
Experience implementing payment gateways and supporting multiple payment paths and business rules within a SaaS application.
Authorization & Data Segregation
Ability to implement application-level controls that associate users with organizations while enforcing appropriate boundaries around sensitive or restricted information.
Partner Configuration
Experience creating configurable functionality that enables new B2B customers to be onboarded without requiring significant custom engineering.
Analytics & Reporting
Ability to translate business metrics into reliable customer-facing dashboards and reporting functionality.
Production Quality & Regression Testing
Ability to extend an existing production platform while protecting established functionality through automated testing, regression coverage, code review, and disciplined deployment practices.
What We're Looking For
We are looking for a senior-level developer who combines strong technical execution with B2B product and integration experience.
This person should be comfortable being given a business capability—such as enabling enterprise SSO, integrating a partner portal, introducing a new payment workflow, or creating configurable partner functionality—and independently determining how to translate that requirement into a secure, scalable implementation.
The successful candidate will understand the difference between delivering a one-time customer customization and building a reusable SaaS capability that can support future partners.
This role is best suited for a hands-on engineer who can operate with autonomy, communicate effectively with stakeholders, make sound technical decisions, and take accountability for delivering production-ready B2B functionality.
Click on Apply to know more.
