Payneteasy

20y in payments. Java/Kotlin (core processing), Python (tooling, reconciliation), PostgreSQL (transactional correctness, unique constraints), Kafka (event-driven flows), webhook/REST API design.

Deterministic payment design beyond idempotency keys: business-level uniqueness, attempt-history modeling, PSP retry-loop coordination. Also exploring Temporal for reconciliation workflows.

Payment orchestration platform: PSP-agnostic routing, deterministic retry/recovery for failed auths, reconciliation pipeline that survives provider outages. Writing up patterns as we go on dev.to.

Talking shop on payment orchestration, idempotency patterns, multi-PSP routing, reconciliation at scale. Open to engineers at PSPs, acquirers, in-house payment teams. No vendor pitches, no crypto.