Sr. Software and Data Engineer (API)

About this role

Affinity Solutions (Affinity) is the leading consumer purchase insights company. We provide a complete view of U.S. and U.K. consumer spending, across and between brands, via exclusive access to fully permissioned data from over 100 million consumers. Our proprietary AI technology, Comet™, transforms these purchase signals into actionable insights for business and marketing leaders to drive optimal outcomes and build lasting customer relationships. Visit www.affinitysolutions.com to discover how we’re shaping the future of consumer purchase insights.

About Your Role:

Affinity is seeking a highly skilled and experienced Senior Data and Software Engineer I (API) to join our team. In this role, you will be responsible for architecting, building, and maintaining high-performance RESTful APIs that serve as the backbone of our data integration ecosystem. This position requires deep expertise in API development, data technologies, cloud environments, data clean rooms, and modern software engineering practices.

Your Responsibilities:

• Design, develop, and maintain high-performance RESTful APIs that handle large-scale data operations with optimal efficiency and minimal latency
• Stay current with emerging API technologies, standards, and best practices, including GraphQL, gRPC, OpenAPI 3.0+, and modern authentication/authorization frameworks
• Implement performance optimization strategies for APIs, including caching, rate limiting, pagination, and asynchronous processing, to ensure scalability and reliability
• Integrate with third-party API vendors and external systems, managing authentication, data transformation, and error handling, and ensuring seamless interoperability
• Develop comprehensive API documentation using industry standards (Swagger/OpenAPI) and implement robust monitoring, logging, and observability solutions
• Design and implement data privacy features and services to enable secure multi-party collaboration, including query constraints, data cl...