Account Manager

London, UKFullTime

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

- 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

Apply with uptayn.

Sign in free to open the apply link, get this role scored against your CV, and track your application.

uptayn
2026 · built quietly in Berlin.
uptayn = up + attain
Built for
  • Recent business grads
  • Engineers pivoting to ops
  • Consultants → startup
  • Second-job operators
Quiet by default
  • No tracking pixels
  • No LinkedIn login
  • No spam outreach
  • Just roles + your CV