Senior Customer Success Manager

Postscript · Remote · Remote

Posted 6/24/2026 · last confirmed live 8/26/2026

Postscript is the AI messaging platform trusted by 20,000+ Shopify brands — including Brooklinen, Ruggable, True Classic, and Dr. Squatch.  With a mission to make SMS your number one revenue driving channel, we built the best-in-class SMS marketing platform and launched revenue-driving AI features not available on any other platform. And we're just getting started.  Backed by Greylock and Y Combinator, fully remote since 2018. Job Description As a Senior Enterprise Customer Success Manager at Postscript, you will drive success for our largest, high-growth customers by ensuring they achieve maximum value from our platform. Acting as a trusted advisor, you’ll immerse yourself in their businesses, deeply understand their goals, and provide strategic guidance to fuel their growth. This role is ideal for someone passionate about building relationships, shaping creative marketing strategies, and delivering exceptional customer experiences. You’ll collaborate cross-functionally with internal teams, including Sales, Product, and Support, to share customer insights and help improve Postscript’s offerings. By enabling our customers to succeed, you’ll play a direct role in driving company growth and innovation. This is a fully remote position and can be based in the US or Canada. Key Responsibilities Customer Success & Relationship Management Cultivate strong, trusted relationships with your assigned portfolio of enterprise customers. Drive adoption of new and existing Postscript product features, ensuring customers realize value from ongoing product innovation. Act as a strategic advisor, ensuring customers achieve their goals and realize measurable ROI. Develop tailored strategies to ensure customer growth and retention, meeting performance targets. Marketing Strategy & Consultation Lead impactful strategy sessions to share best practices, identify opportunities, and implement innovative SMS marketing strategies. Provide creative and data-driven recommendations to maximize customer engagement and growth. Cross-Functional Collaboration Partner with the broader account team to identify and execute upsell and renewal opportunities. Collaborate with Product and Support teams to address technical issues and deliver seamless solutions. Operational & Industry Expertise Leverage AI tools and internal systems to streamline workflows, increase efficiency, and enhance the quality and consistency of customer interactions. Stay ahead of emerging e-commerce and marketing trends, and proactively share insights with customers and the Postscript team. Maintain expert-level knowledge of Postscript’s product and the broader e-commerce landscape. What We’ll Love About You 4+ years of customer success or account management experience in SaaS, marketing , or e-commerce technology. 1+ years of sales experience (e.g., Account Management) preferred. Strong technical aptitude and ability to navigate complex tools or workflows, including working with or quickly adopting AI-powered tools to drive productivity and customer outcomes. Proven understanding of e-commerce businesses, marketing strategies, and industry trends (e-commerce experience strongly preferred). Driven by curiosity and passion for empowering customers to succeed, with a knack for tackling challenges and simplifying complex problems. Excellent problem-solving skills, with high reliability and outstanding follow-through. Proactive, autonomous, and adaptable. Comfortable working in a fast-paced, early-stage environment with a growth mindset towards emerging technologies.  Outstanding written and verbal communication skills, with a talent for building strong rapport and uncovering insights through thoughtful discovery questions. Open to feedback and eager to continuously learn and improve. What You’ll Love About Us Salary range of USD $100,000 to $117,000 base plus variable compensation (20%) and equity regardless of location. High-growth startup environment with opportunities to make a meaningful impact and grow your career. Fully remote work culture – work from anywhere. Fun, collaborative team passionate about e-commerce and innovation Flexible paid time off to recharge and prioritize your well-being. Comprehensive health, dental, vision insurance. For information about how we use your personal data, please see our U.S. Job Applicant  Privacy Notice You are welcome here. Postscript is an ever-evolving place of equal employment for talented individuals.

This role is published by Postscript on greenhouse. SwiftFit is not the employer and does not accept applications.