Job Description
About the role
Antithesis is hiring Account Managers to own customer relationships after close.
You will be joining a growing global team of talented Account managers, reporting to the Head of Customer Growth, partnering and working closely with Sales, Customer Experience, and Product. You help shape how post-sales account management works at Antithesis.
You take responsibility for renewals and expansion from day one.
You work with deeply technical customers: Engineers and Engineering Leaders, CTOs and CEOs.
This is a quota-carrying role. You own revenue outcomes.
What you will do:
Own a book of business from initial handoff through onboarding, adoption, renewal, and expansion
Carry a quota tied to renewals and expansion
Drive on-time renewals with clear forecasting
Identify, scope, and close expansion opportunities
Build trusted relationships with customers
Help guide customers through onboarding, adoption, and value realization
Lead post-sale commercial conversations
Own renewal terms, pricing, and expansion proposals
Partner with Customer Success and Customer Experience
Surface product feedback grounded in customer usage
Track account health, risk, and growth signals
Contribute to renewal and expansion playbooks
Operate with ownership in an early-stage environment
What success looks like:
Strong gross and net retention
Predictable renewal forecasting
Expansion driven by real customer value
Long-term customer relationships
Clear ownership and follow-through
No surprise churn through early risk identification and proactive ownership
Requirements:
5+ years experience in a quota-carrying Account Manager role
Experience at a B2B SaaS company
Direct ownership of renewal and expansion quotas
Proven record of meeting or exceeding ARR retention and growth targets
Experience managing a defined book of business
Experience running renewal and expansion deal cycles
Comfort owning pricing, terms, and commercial negotiations
Experience selling to existing customers, not prospects
Ability to work with technical buyers and stakeholders
Strong forecasting discipline and pipeline management
Comfort operating in a fast-moving startup
Strongly preferred
Experience with highly technical products, developer tools or infrastructure products
Experience working with engineering-led customers
Experience with usage-based or platform SaaS
This role is not
A Customer Success role without quota
A support or relationship-only role
A training role for first-time sellers