Senior Backend Engineer — Cari

📋 Description Own the transaction processing platform infrastructure for signing and settlement Own the transaction-ordering and concurrency-control logic at scale Design data models and API contracts; define retry/backoff logic Define production-ready criteria: SLOs, alerts, and runbooks Lead incident response and root-cause analysis to prevent recurrence Coordinate with Banking and Blockchain engineers to translate requirements into platform capabilities 🎯 Requirements 5-7 years backend experience with strict correctness or ordering Strong TypeScript proficiency; experience with Effect.ts or similar Experience with durable workflows/orchestration (e.g., Temporal) Concurrency control: partitioned execution, idempotency, at-least-once, reconciliation PostgreSQL and Kafka production experience Able to own a service independently with reliability and design responsibility Strong written communication; able to write RFCs 🎁 Benefits Competitive compensation: salary, bonus, and equity Full medical, vision, dental benefits 401(k) with matching program Flexible vacation policy and remote-first work