Sentinel AV is a B2B API infrastructure platform built for fintech, insurtech, healthcare IT, and ERP engineering teams. Two live products: API Health Monitor — monitors REST and SOAP API endpoints for uptime, latency, and schema drift detection. The only SaaS platform with first-class SOAP monitoring. Alerts via Slack, email, and webhook. SOAP ↔ REST Gateway — bidirectional protocol translation between SOAP and REST. Point a WSDL at us, get a REST endpoint back. Send REST calls to a SOAP backend. Supports WS-Security, MTOM attachments, Redis caching, circuit breaker, and translation audit logging. Built on Java 21, Spring Boot 3, Apache Kafka, PostgreSQL, and Redis. API-first, no frontend dependency. Deployed on AWS.