by Solid Water Agency · €5 to book

Growth
Hours

A 45-minute growth clinic for startup founders.

Acquisition Retention Go-to-market Fundraising readiness Positioning

45 min One-on-one session

20+ yrs Combined experience in scaling companies

Who we are

A growth agency built for scale-ups

Solid Water is a growth marketing agency built for scale-ups and ambitious brands. We build you a system, one that compounds over time and covers the full customer journey from first touchpoint to repeat purchase to long-term loyalty.

We work with fintech, healthtech, consumer, and high-growth technology companies across Europe, MENA, the UK, and the US.

Who this is for

If this sounds like you

No clear ROI from marketing spend

Running on gut feel

Need to sharpen your fundraising narrative

Stuck on acquisition

Losing users and don't know why

Entering a new market

Where we can help

The growth areas we cover

Go-to-market strategy

Funnel optimisation & conversion

Helping calculate your real CAC

Improving LTV through lifecycle marketing

Fundraising pitch

Building a founder brand that has a direct revenue impact

What you get

What you walk away with

A clear diagnosis of the underlying issue

We analyse the actual problem — not the symptom you came in with.

Clear next steps, hypotheses of outcomes and subsequent actions

One concrete action you can take immediately after the call.

An outside perspective

From operators who've built, scaled, and advised growth companies across multiple markets.

Session notes

A short written summary of what we discussed and recommended, sent after the call.

How it works

Four steps

Book a slot

Pick a time via Calendly. Takes two minutes. Book here →

Fill in a short form

Tell us your biggest growth challenge so we come prepared. The more specific, the better.

Show up

Join the call. We'll take it from there.

Leave us a review on Clutch

In exchange for the session, we'd ask you to leave us a review on Clutch. It takes 3 minutes and helps us reach more founders like you.

Who you'll speak with

Meet the founders

Maria Tsarkova

Co-founder, Solid Water

Maria led growth for fintech and digital brands across MENA, the UK, and Europe — acquiring millions of users and scaling customer LTV in trust-sensitive, highly regulated markets. At Ooredoo Fintech, she led the expansion of the digital wallet across six markets. Alongside this, Maria is the co-founder of Solid Water — the growth agency she wishes she'd hired earlier in her career. Solid Water works with scaling companies to unlock sustainable growth, with a sharp focus on LTV:CAC, channel experimentation, and results that move North Star metrics.

Daria Partas

Co-founder, Solid Water

Strategic communications expert with over 20 years of global experience. Has held senior roles at British Telecom, CNN, and the United Nations. Specialises in C-suite profiling, corporate relations, and reputation management across telecom, space tech, defence tech, and financial services.

Growth Hours by Solid Water

45 minutes. €5 to book.
No pitch, no follow-up unless you want one.

We open our calendar to a small number of founders each week.

Book your session

FAQ

Common questions

How much does the session cost?

Growth Hours sessions are €5 to book. We keep it almost free intentionally, the small fee just helps make sure the people who show up are the ones who genuinely need it. In exchange for the session, we'd ask you to leave us a review on Clutch. It takes 3 minutes and helps us reach more founders like you.

Who will I speak with?

You'll speak directly with one or both of Solid Water's co-founders, Maria and Daria.

What should I prepare?

Just come with a clear description of your biggest growth challenge. The more specific, the more useful the session will be. Please answer some questions during the booking process.

What happens after the session?

We'll share any notes or resources mentioned in the call. If you'd like to keep talking, we're open to that.

Can I book another session?

Growth Hours is a one-time session. That said, founders who've joined us get preferential rates if they decide to work with Solid Water on an ongoing basis.

GrowthHours