Proven track record of shipping production systems in ambiguous, client-facing environments, with demonstrable evidence of: REST APIs, webhooks, event-driven systems, auth patterns, data modeling, idempotency, and failure modes, not just happy-path builds. Demonstrated 5+ years of hands-on experience in a customer-facing technical role such as Forward Deployed Engineer, Solutions Engineer, AI Engineer, Implementation Engineer, Solutions Architect, Technical Consultant, or similar.