Mirrai Careers

Founding Customer Success Manager

Composio

sf Full-time Posted 30+ days ago
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At Composio, we are building infrastructure that allows agents to communicate with the tools you use for work including Github, Gmail, Notion, Salesforce, etc. We are a small team of engineers wrangling problems from context to search, that help us provide the most capable bridge between your agents and your tools. We raised a $25M Series A from Lightspeed with some incredible angels like Guillermo Rauch (CEO of Vercel), Dharmesh Shah (CTO of Hubspot), Gokul Rajaram. Beginning of this year we 3x our ARR, our customers range from your friends in the YC batch to Wabi, Glean, Zoom and many more. Our largest customers are betting meaningful parts of their AI infrastructure on Composio. As our founding Customer Success Manager, you will own a book of high-value enterprise and growth accounts, build the relationships that turn customers into champions, and create the CS playbooks that scale with us. WHAT YOU'LL DO? * manage a book of Composio's largest enterprise and growth accounts as their primary point of contact and internal advocate * lead structured onboarding so customers reach value quickly with clean technical integration and clear success metrics * drive deep product adoption across teams, integrations, and workflows * own NRR for your book: identify expansion opportunities, lead renewal conversations, and partner with AEs on upsells and cross-sells * build executive relationships across champions, economic buyers, and technical decision-makers * serve as the voice of the customer internally by bringing product gaps, friction points, and patterns directly to product and engineering * run a structured QBR cadence with top accounts to review usage, align on roadmap, and surface strategic opportunities * build the CS playbook from scratch: onboarding frameworks, health scoring, escalation protocols, and renewal processes * partner with Support to ensure enterprise customers receive fast, high-quality resolution on technical issues "MUST HAVES" if you are very good, nothing is a must per-se * 4-7 years in Customer Success, Technical Account Management, or Solutions roles at a developer tools, infrastructure, or API-first SaaS company * proven track record owning NRR and renewals for enterprise accounts - you have grown a book, not just maintained one * technical fluency: you can understand APIs, SDKs, auth, integrations, agent workflows, and customer architecture well enough to be useful * excellent relationship management across technical champions, executives, and cross-functional internal teams * strong written communication and operating cadence: crisp recaps, useful QBRs, clean escalation notes, and no loose threads * builder mindset: you are excited to create the first CS systems instead of inheriting mature ones

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