Amber Coster
Fractional COO & Transformation Partner

I love the work you hate.

Commercially minded operator attracted to the stuff that keeps people up at night. Whether that's scaling the organisation, improving execution, redesigning operating models or helping leadership teams work better together, I help businesses untangle ways of working that are no longer serving them, and build the foundations for their next stage of growth.

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The problems I help solve

Founder-led businesses hire me when growth has outgrown their way of working.

I help technology companies from Series B to C — and beyond — replace operating friction with clarity, accountability and pace.

  • The founder has become the operating system

    Decisions, escalations and momentum all route back to one person. I help distribute ownership, clarify decision making and help the founder get space not just to execute, but to think, reflect and breathe.

  • Strategy exists, execution doesn't

    Vision and OKRs are set, but teams drift into competing priorities and quarterly goals fade by week three. I build goal-setting and review cadences around the metrics that matter so the work actually works.

  • High performance without burnout

    Great businesses need pace, accountability and high standards. But they also need people who want to come back on Monday. I build cultures where people know what's expected, decisions happen quickly and teams deliver consistently. More impact. Less attrition.

  • The company needs to look and act more grown up

    The processes, structures and ways of working that got you to Series A rarely get you beyond Series C. I help leadership teams mature, improving board confidence, customer impact and employee engagement.

Ways we can work together

Three ways in, shaped around where you are.

Strategic Advisor

For founders who need an experienced operator in their corner - a steady thinking partner between board meetings.

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Fractional COO

Executive leadership to help your organisation scale with clarity, accountability and pace.

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Transformation Projects

Focused engagements solving one significant organisational challenge, end to end.

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Selected experience
UnmindClickUpAppDynamics
OUTCOMES OVER OUTPUT

Work that's worked

Unmind
CHALLENGE

A high-growth SaaS business navigating the loss of product-market fit. The challenge was to shift from relying on market momentum to building a more accountable organisation capable of creating demand, improving execution and operating with greater discipline without losing heart.

My focus

Reshaped how the company operated — bringing greater clarity, accountability and execution across the business. Alongside organisational transformation, we rebuilt operating rhythms, strengthened commercial discipline and helped the business transition from facilitating demand to creating it.

What changed
  • Delivered a 58% reduction in burn
  • More than tripled ARR per employee
  • Significantly improved operating efficiency
  • Created a leaner, more focused organisation positioned for long-term growth whilst improving employee engagement
AppDynamics
CHALLENGE

Scale an EMEA business at extraordinary speed while building the operational foundations needed to support international growth.

My focus

Built and evolved the operating infrastructure behind rapid expansion — helping leaders scale teams, launch new markets and keep execution aligned as the organisation grew.

What changed
  • Built and scaled EMEA from 6 to more than 360 employees
  • Expanded from 3 to 16 countries
  • Supported the company from $100m valuation through IPO readiness and $3.7bn acquisition by Cisco and GTM integration
ClickUp
CHALLENGE

Support one of the world's fastest-growing SaaS companies as it established and scaled its EMEA business.

My focus

Built the regional operating foundations across Sales, Marketing, Customer Success, Professional Services, HR and Recruiting — bringing structure, alignment and execution to a rapidly growing organisation.

What changed
  • Established scalable operating rhythms across EMEA
  • Enabled cross-functional and cross-geography alignment 
  • Helped leaders make faster, better-informed decisions
  • Built foundations designed to support long-term international growth
Amber Coster
About Amber

I've spent my career helping ambitious technology companies navigate the moments where growth creates more complexity than the organisation can handle.

I'm known for bringing calm to chaos, connecting the dots across leadership teams, refocusing employees on the metrics that matter and helping founders get back to what they do best. I believe high performance shouldn't come at the expense of people.

More about Amber

Companies rarely struggle because they lack ambition. They struggle because the organisation can no longer execute the ambition.

Let's talk

Sound familiar? I'd love to chat.

No pitch, no pressure — just a candid discussion about what you're navigating and whether I'm the right person to help.

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