• Own and deepen relationships with key domestic and/or international carrier partners, ensuring strong performance and long-term alignment. • Lead carrier engagement beyond day-to-day operations, including strategic planning, roadmap discussions, and escalation management. • Represent Shippo as a senior partner in high-stakes conversations with external executives. • Drive complex carrier initiatives such as new service launches, contract expansions, compliance improvements, or performance turnarounds. • Lead quarterly business reviews (QBRs) and develop structured joint plans with top carrier partners. • Identify opportunities to evolve carrier partnerships from transactional relationships into strategic collaborations. • Partner closely with Product, Engineering, Support, and Sales to resolve systemic issues and improve merchant experience. • Translate carrier capabilities and constraints into internal priorities and actionable execution plans. • Influence cross-functional decision-making and maintain clear upward visibility to ensure alignment. • Develop scalable processes, documentation, and tooling to improve carrier management workflows. • Monitor carrier KPIs, surface trends, and proactively drive measurable improvements in service quality. • Mentor and support more junior carrier managers, helping raise the bar across the team.