Valentin Radu works on the hard part of eCommerce growth: improving conversion and retention when budgets get tighter, acquisition gets more expensive, and competition gets smarter. Their perspective is direct and numbers-first, pushing merchants to stop chasing short-term spikes and start building systems that compound through CLV (Customer Lifetime Value).
In this interview, Valentin shares the simplest mindset shift Balkan brands need in 2026, the first experiments any store can run even with low traffic, and how AI is changing experimentation for small teams. As a Brand Ambassador for the Balkan eCommerce Summit 2026, Valentin also highlights the biggest opportunity to help merchants adopt data-driven growth across the region.
Many Balkan eCommerce brands still focus mostly on short-term sales. What is the simplest mindset shift they must make in 2026 to start building sustainable, CLV-driven growth?
The simplest mindset shift?
Stop treating every customer like a one-night stand and start seeing them as a multi-year relationship worth investing in. Right now, too many Balkan eCommerce brands are hooked on that quick dopamine hit from short-term sales spikes: flash discounts, aggressive ads, whatever juices the top line today.
But in 2026, with rising CAC, cookie crumble, and AI making everything hyper-competitive, that’s a death spiral. The pivot is this: Profit should become your North Star, not revenue. And profit is made by customers. Not from one order, but from all their orders. Which means CLV should be prioritized.
Here’s why it lands hard, and how to make it stick without overcomplicating:
Go one step back: Short-term focus ignores the math. A single €100 sale feels great, but if that customer’s LTV is €500 over 2 years (hello, repeat buys, upsells), you’re leaving 80% of the value on the table. In Balkans markets like Romania or Bulgaria, where margins are tight and loyalty is fickle, chasing transactions burns cash on low-value acquisition: think 50-80% churn in month 1. Flip to CLV, and suddenly you’re prioritizing the 20% of customers driving 80% of profit.
The shift in practice? Measure everything against “Does this ladder up to repeat rate and LTV?”
- Diagnostic first: Pull your data: cohort retention curves, RFM segments (recency, frequency, monetary). Who are your champions (high freq/high value)? At-risk (recent but dropping)? Wastrels (one-offs eating ad budget)?
- Test lean: Run experiments on post-purchase flows: personalized emails, loyalty mechanics, not just cart abandonment. Aim for 5-10% uplift in repeat rate; that compounds to 2-3x LTV in 12 months.
- Real example from my scars: Early in my first eCom venture, we shifted from promo blasts to segmenting for nurture. LTV jumped because we nurtured the right 30%, not sprayed everywhere.
Bottom line, it’s not sexy, but it’s simple: Track CLV weekly, segment ruthlessly, experiment on retention levers. You’ll sleep better, margins fatten, and growth sustains.
Balkan merchants often hesitate to run experiments because they feel “too small” for CRO. What are the first 2–3 experiments any online store can run immediately to unlock meaningful wins?
Small stores can still improve the conversion rate – and they definitely should!
Here are 3 things that they should be doing:
- Find what should be fixed with these 3 on-site surveys:
- what keeps visitors from buying,
- how many visitors found what they were looking for (And what they haven’t found)
- what almost stopped customers from buying – on the thank-you page
- Run AB testing experiments focusing on micro-conversions to push people further in the customer journey if they don’t have enough transactions. Instead of hoping to improve the sales, push more people to search, use the filters – manifest the behavior that the customers have before buying. That will also increase the chances to convert, as well – but you will have the statistical power to validate those experiments.
- Run radical experiments. When you make bold changes, the results are faster, and your MDE (minimum detectable effect) will be higher. However, base these experiments on evidence, not on gut-feelings (we have a free AI CRO audit to help merchants find what they should be implementing)
You’ve helped global brands improve conversions and CLV through customer research. What is one practical technique Balkan retailers can use to understand their customers better without big budgets or complex tools?
Deploy customer feedback surveys: I am a big fan of the Net Promoter Score. This is a simple measure to monitor the customer satisfaction, expectations, and things to fix. However, it is crucial to monitor it at 2 key moments: before and after the purchase. That will allow you to differentiate from the expectations prior to buying (website experience) and after getting the product (post-purchase experience).
The key is to keep the open answers and then look / analyze the answers with AI – NLP – what are the main issues and main highlights? There are free tools for this for small stores up to a certain size, including ours, Pulse.
As cross-border selling grows, what metrics should leadership teams in the region track weekly to ensure they are retaining profitable customers, not just acquiring new ones?
The key is to monitor a few crucial things: Customer Lifetime Value, Customer Acquisition Cost, CAC Payback time (in how many days you will break-even), Max CAC Allowance (how much you can affort to pay in order to remain profitable or break-even), CLV:CAC ratio (the general acceptance is to keep it above 3:1), Repeat Purchase Rate, Purchase Frequency, and Retention Rate.
As a Brand Ambassador for the Balkan eCommerce Summit, where do you see the biggest opportunity to help regional merchants adopt experimentation and data-driven growth?
We are doing a lot of efforts to help the regional merchants (Balkans included) make progress based on data, and adopt an experimentation mindset.
One of them is our free AI CRO audit and the CRObenchmark – companies can check their website with 320 AI agents that analyze the UX, accessibility, data hygiene of a website, and come up with AB testing ideas + the comparison with their competitors.
Many think that they can’t do easy things to improve the conversion rate. Wrong: it’s lack of quick, actionable insights and small actions. Micro-wins compound.
Also, we are offering our AB testing tool Omniconvert Explore: Free tests on first 50k visitors.: trust badges +15% CR, exit popups 20% uplift.
You’re now developing the first AI-powered CRO audit. How do you see AI transforming experimentation for Balkan eCommerce businesses, especially those with limited resources and small teams?
Honestly, for a small team in the Balkans, the “grind” of eCommerce is becoming unsustainable. You’re likely wearing five hats at once: CEO, data analyst, copywriter, and ad manager, while competing against global giants who control 40% of the market. With net profit margins tightening, simply “digging faster” isn’t the answer.
The reality for many of us is that we’ve become “human middleware”. We spend our mornings hunting for insights across disconnected dashboards and our afternoons manually building campaigns or tweaking emails . It’s a creative bottleneck that costs weeks of time and thousands in fees. By the time a manual campaign launches, the market has often already moved.
The real shift is moving from manual labor to Strategic Supervision.
Instead of spending weeks on a single campaign, you spend about 18 minutes reviewing an AI-generated blueprint and hitting “approve”.
Imagine a system that “hears” when a competitor’s customers start complaining about fragile products and instantly generates the ads, emails, and landing pages to capitalize on that specific opportunity. This allows you to scale based on real ROI and profitability, not just vanity metrics like clicks or traffic percentages.
This is exactly what we’re building with Nexus. It’s an autonomous growth engine that merges multiple sources of data: Shopify/ eCommerce data, Meta, competitor, website UX, GA4 and more data into one unified truth. We are launching the Data Insights Beta in Q2 2026 , with the goal of reaching full supervised autonomy by early 2027.
Meet Valentin at Balkan eCommerce Summit 2026
If you want practical ways to improve conversion and retention without guessing, connect with Valentin on-site. These frameworks and experiments are designed to compound, especially in markets where CAC is rising and attention is shrinking.
🎟️ Grab your ticket at balkanecommerce.com and be part of building stronger connections across the Balkans.