Client Onboarding Specialist (Marketing Agency)Type: Part-Time (15–20 hours/week to start, with potential to increase based on client volume)Schedule: US business hours overlap requiredAbout the RoleWe are looking for an experienced Client Onboarding Specialist to join a fast-growing US marketing agency. This role is ideal for someone who thrives in a client-facing environment, enjoys solving complex platform access issues, and takes ownership of every onboarding from kickoff to successful launch.As the first point of contact after a client signs, you'll guide new clients through the onboarding process, secure access across multiple marketing platforms, troubleshoot technical roadblocks, and coordinate with internal teams to ensure campaigns can launch successfully.Beyond technical expertise, we're looking for someone who communicates with confidence, builds trust quickly, adapts to different client personalities, and genuinely advocates for clients throughout the onboarding journey. Y...