We help brands scale smarter online
MIERZYK LTD is a UK-based e-commerce consultancy. We partner with brands and online retailers to optimise their digital strategy, increase conversions, and build sustainable revenue growth.
Full-spectrum e-commerce consulting
From strategy to execution — we cover every angle of your online business to maximise growth and profitability.
Growth Strategy
Data-driven roadmaps to scale your e-commerce revenue. We identify high-impact opportunities and build actionable plans for sustainable growth.
Paid Acquisition
Expert management of Meta Ads, Google Ads, and TikTok campaigns. We optimise spend, creatives, and targeting to maximise your return on ad spend.
Store Optimisation
CRO audits, UX improvements, and A/B testing to turn more visitors into paying customers. We work with Shopify, WooCommerce, and custom platforms.
Email & Retention
Klaviyo flows, segmentation, and lifecycle campaigns that increase repeat purchases and customer lifetime value by up to 40%.
Marketplace Expansion
Launch and scale on Amazon, eBay, and Etsy. Product listing optimisation, advertising, and inventory strategy across multiple channels.
Analytics & Reporting
Custom dashboards and KPI tracking so you always know what's working. GA4, attribution modelling, and profit-first reporting.
From audit to acceleration
A proven 4-step framework we apply to every engagement. No fluff, no vanity metrics — just measurable commercial outcomes.
Deep Audit
We analyse your store, traffic, ads, email, and margins to identify exactly where revenue is being left on the table.
Strategy Build
A prioritised action plan with clear KPIs, timelines, and expected ROI for every initiative we recommend.
Execute & Test
We implement changes, launch campaigns, and run rapid experiments. Weekly reporting keeps you in the loop.
Scale & Optimise
Double down on what works. We continuously optimise and expand winning channels to compound your growth.
Numbers that matter
Real outcomes from real engagements. Here's what our clients typically see within the first 90 days.
Average revenue increase
Across all client engagements in the first 6 months of working together.
ROAS improvement
Through better targeting, creative testing, and funnel optimisation on paid channels.
Conversion rate lift
From CRO audits, UX improvements, and systematic A/B testing programmes.
Customer LTV growth
Through email automation, loyalty strategies, and post-purchase experience design.
Integrated with your stack
Let's grow your store
Book a free 30-minute strategy call. We'll audit your current setup and show you exactly where the opportunities are.
✉ hello@mierzyk.co.uk