Senior Software Engineer II, Customer Experience

Description: Kard is building commerce media infrastructure connecting financial institutions, platforms, and merchants through data and rewards. The Senior Software Engineer II will design and build services for transaction matching, offer ingestion, and support APIs, focusing on operational readiness and documentation. Requirements: Expert programming skills in Go and/or TypeScript; experience with scalable backend services. Solid experience with distributed systems, event-driven architectures, and relational/document databases (Postgres, MongoDB). Proficiency with AWS, Infrastructure-as-Code (Terraform), and container technologies (Kubernetes/EKS). Experience in transaction-processing and ingestion pipelines with a focus on correctness and idempotency. Ability to lead technical projects from discovery to production rollout, including cross-team collaboration. Commitment to fostering an inclusive engineering culture; U.S. core business hours availability. Benefits: Competitive salary: $160,000 - $190,000 USD (US) or $120,000 - $140,000 USD (Argentina). Flexible PTO with a minimum of one day off per quarter; observance of 11 Federal Holidays plus additional days. Health, Dental, and Vision Insurance; 401k with employer match (US only). Reimbursement for coworking space and WFH setup; company offsites for team-building.