E-commerce consulting
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E-commerce consulting and online store audits

I help online stores grow margin, not just revenue. I break sales down into traffic, conversion, average order value and returning customers, and then show you where there’s the most to gain.

We can stop at the audit, but we don’t have to. Often the store’s team implements the recommendations itself, and I help set the order of changes. If you prefer, I’ll run the product campaigns myself, and for IT, creative, automation or more complex analytics I coordinate trusted partners and take responsibility for their work.

  • A store audit with a list of changes, most important first
  • Campaigns in Google and Meta set up for product margin
  • One monthly report on sales, margin and marketing
Jędrzej Zarychta, Fractional CMO and Interim Marketing ManagerJędrzej Zarychta
Fractional CMO and Interim Marketing Manager
12+ years of experience150+ projectsE-commerce, B2C, B2B
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    Brands I've worked with

    Selected project results

    E-commerce, beauty
    €15k

    in additional monthly profit from growth initiatives, plus 350+ new customers a month

    E-commerce, food
    115%

    year-over-year sales growth and 800+ leads a month

    B2B wholesaler, fashion
    14x ROAS

    and 70+ new customers from a one-month campaign

    Amounts converted from PLN and rounded. No client names.

    What I do for your online store

    Store audit

    • Sales broken down into traffic, conversion, average order value and purchase frequency
    • Store technology, analytics and partner solutions, e.g. shipping and payments
    • Past campaigns and their results

    E-commerce strategy

    • Competitors, product categories and pricing, including bestsellers and the cheapest offers
    • Target groups, messaging and brand positioning
    • Funnel, channels and budget set up for margin

    Ongoing e-commerce support

    • Product campaigns I run myself: Google Shopping (PLA), Performance Max, dynamic remarketing, catalog ads and Advantage+ in Meta Ads, and more
    • Retention and the customer base, together with automation partners (e.g. Klaviyo or Synerise)
    • A monthly report on sales, margin and marketing

    When does e-commerce consulting make sense?

    I usually work with stores in one of these situations. If you need someone to take over running the store for a fixed period, see Interim E-commerce Manager.

    The store has hit a ceiling

    The usual ways to drive sales have stopped working. I break revenue down into traffic, average order value, conversion and returning customers and check where there's the most to gain.

    Good ROAS, weak margin

    Campaigns look good in the dashboard, but profit doesn't grow. I set up campaigns and budget around product margin, not revenue alone.

    Customers buy only once

    Acquiring customers costs more and more, and few come back. Together with automation partners (e.g. Klaviyo or Synerise) I build the customer base and post-purchase communication.

    A wholesaler starts selling direct to consumers

    You have the product and wholesale customers, and the store is just starting, usually self-funded. I start with the channels that pay back fastest.

    You're scaling the store for an investor or an exit

    An investor or buyer will check cohorts, CAC, LTV and how repeatable sales are. I help put this in order and show it in the data.

    You're weighing an e-commerce manager or an agency

    You need ongoing support, but a full-time hire or an agency isn't the right fit. I work like an e-commerce manager, at the scope you need.

    How much does e-commerce consulting cost?

    Prices exclude VAT. I invoice in EUR on a simple B2B contract (reverse-charge VAT for EU companies), and we agree the exact scope after a free consultation.

    Store audit
    from €1,250

    one-time, excl. VAT

    I review sales, traffic, conversion and average order value, store technology and campaigns, and then set priorities around margin. You get a list of quick wins, most important first, that your team can implement right away.

    Ongoing advisory
    from €1,250

    per month, excl. VAT

    The Start package: a store audit and a quarterly plan, and then ongoing advisory. We focus on 2-3 priorities and meet every 2 weeks.

    Advisory and execution
    from €2,500

    per month, excl. VAT

    I advise on offer, pricing and budget decisions on an ongoing basis, and implement the recommendations myself: I run product campaigns in Google and Meta. Plus a plan with KPIs and a monthly report. We meet every week.

    E-commerce strategy
    from €6,000

    per project, excl. VAT

    An e-commerce strategy from the ground up: competitors, product categories and pricing, target groups, positioning, funnel, channels, budget and KPIs. Plus an implementation plan for the first months.

    I don’t do one-time hourly consultations. The smallest engagement is a project or the Start package. For an audit or strategy you pay 50% upfront and 50% on delivery. If during ongoing work we clearly go beyond the scope and you don’t want to upgrade, I bill the extra work at €50 per hour, excl. VAT.

    Ongoing work is paid in advance, month by month. You pay the ad budget directly to the platforms, and I only invoice my own work.

    How we start and how we work

    01

    Free consultation

    Send me a message and we'll talk online, or over coffee if you're in Warsaw. We'll discuss your store, challenges, priorities and budget.

    02

    Proposal

    I'll send you a simple proposal with pricing and scope, along with a short contract template and an NDA.

    03

    Kickoff

    At the kickoff meeting we set up access, materials and one decision-maker on your side. After about 2 weeks I deliver the audit and the plan: goals, KPIs, channels and media plan.

    04

    Regular cadence

    We meet every week (every 2 weeks in Start). You get a report every month, and every 2-3 months we review the plan together.

    Working cadence

    WhatHow oftenWhat you get
    Online meetingWeekly, every 2 weeks in StartI show what I’ve done and what the results are. We agree the plan for the coming weeks and the decisions on your side
    ReportMonthlyKPIs against targets, test learnings and next month’s plan. I measure results with your sales data and GA4, not the ad platforms’ dashboards
    Plan reviewEvery 2-3 monthsI adjust the plan based on the data. After the first 3 months we decide together which package makes sense going forward
    Communication and decisionsOngoingOne email thread with the decision-maker. I write briefs for partners and sign off on their work
    New campaigns and testsAfter about 1, 2 and 4 weeksAfter a week I check tracking, after two I share the first learnings, and after four we decide together on channels and budget

    About me

    Jędrzej Zarychta, Fractional CMO
    12+years of experience
    150+projects
    delivered

    I’m Jędrzej Zarychta, and for more than 12 years I’ve worked where marketing, business and technology meet. At the KERRIS agency I built the digital marketing department from scratch and ran it, responsible for client budgets, the department’s results and the team. At Hemp Juice I went from external advisor to co-owner, and then to selling 100% of the shares to a Swedish corporation.

    As a Fractional CMO, Interim Growth Manager and Interim E-commerce Manager I’ve worked with companies including Holi Health, Tutlo, Natu.Care, heycar Group and ESTYL.pl. I studied e-business at SGH Warsaw School of Economics, and management and sociology at Kozminski University.

    I keep learning, with CXL courses and Google’s Internetowe Rewolucje program behind me. I use AI fluently to improve work and processes, and I also know when it’s better not to.

    How I work

    • I’m your single point of contact and take responsibility for the whole project, including the partners’ work
    • I advise, and when needed, I advise against
    • I base decisions on numbers: CAC, ROAS, LTV and margin
    • I work remotely with clients across Europe and the US, and on-site or hybrid in Warsaw (CET), in English or Polish
    • Invoices in EUR (reverse-charge VAT for EU companies), a simple B2B contract in English, NDA at the quote stage

    What clients say

    Jędrzej helped me open new affiliate channels and improve Meta and Google Ads, remarketing and analytics accuracy
    I had the opportunity to work with Jędrzej as Growth Manager for the Natu.Care brand, where he helped me in several key areas: launching new affiliate channels, improving the performance of paid Meta and Google channels, and improving remarketing and analytics accuracy. Jędrzej showed great energy and was proactive in taking new initiatives from concept to execution, efficiently and in line with the strategy. I recommend Jędrzej to any brand, from early stage to scale.
    Michał Abram photo
    Michał Abram
    CEO, Natu.Care · translated from Polish
    Jędrzej is an excellent fit for anyone looking for someone who combines strategic thinking and willingness to execute fast

    I worked with Jędrzej on Holi from the very beginning and he helped us tremendously to gain early traction and understand what need to be done in the Growth area. Jędrzej is very knowledgeable in his field, but was always willing to expand his knowledge in our domain to get the job done. He's an excellent fit for anyone looking for someone who combines strategic thinking and planning with the ability and willingness to execute fast.

    Paweł Seweryn photo
    Paweł Seweryn
    Co-Founder, Holi Health
    To the point, professional, full of ideas, always on time

    I don't like long speeches, so I'll keep it short. To the point, professional, full of ideas, always on time, always relaxed, always easy to work with and always understanding. Never generic, never rushed and never without keeping the client in the loop.

    Marcin Owsiany photo
    Marcin Owsiany
    Marketing Campaign Manager, Head of CORA CENTER OF EXCELLENCE, SWISS KRONO · translated from Polish
    High commitment, a constant drive to grow and an understanding of business goals

    KERRIS could not have grown so fast or built so many performance marketing capabilities without you on board. High commitment, a constant drive to grow and an understanding of business goals are just a few of the qualities I always valued in our work together. We keep our fingers crossed for your next steps, and if you ever want to come back to agency life, the door is always open 🙂

    Mikołaj Szymański photo
    Mikołaj Szymański
    Co-owner, KERRIS · translated from Polish

    E-commerce consulting: frequently asked questions

    Working together

    What do you check in an online store audit?

    Sales broken down into four drivers: traffic, conversion rate, average order value and purchase frequency. Plus store technology, analytics, partner solutions (e.g. shipping and payments) and past campaigns and their results.

    Which platforms do you work with?

    Shopify, Shopware, Magento, WordPress and similar.

    Do you run product campaigns?

    Yes, including Google Shopping ads, dynamic remarketing and Meta Ads campaigns, set up for sales and margin.

    How are you different from an e-commerce agency?

    I don't work with dozens of clients at once. I work with a few companies and connect marketing with the business and the store's technology, so I look at the results of the whole e-commerce operation, not just the campaigns.

    Do you work with online stores outside Poland?

    Yes. I work remotely with online stores across Europe and the US, in English, and I'm based in Warsaw (CET). I've run campaigns in markets including Poland, Germany, France, Spain, the UK, Italy, Hungary, the Czech Republic, Slovakia and the US.

    Do you help wholesalers start selling direct to consumers?

    Yes. I work both with B2B wholesalers and with brands selling direct to consumers, so I help combine the two models so that the new channel doesn't cannibalize existing sales.

    Pricing and contract

    How much does e-commerce consulting cost?

    I price a store audit with priorities and a list of quick wins as a project, from €1,250, excl. VAT. A complete e-commerce strategy is a project from €6,000, excl. VAT. In both cases you pay 50% upfront and 50% on delivery. Ongoing advisory costs from €1,250 per month and advisory and execution from €2,500 per month, excl. VAT.

    Does the package price include the ad budget?

    No. You pay the ad budget directly to the platforms, e.g. Google, Meta or LinkedIn. I only invoice my own work.

    Is analytics setup included in the package?

    I do the basic analytics setup (GA4, Google Tag Manager, pixels) myself, including e-commerce, and price it separately. More complex implementations go to trusted partners.

    How long is the contract?

    A store audit and an e-commerce strategy are one-time projects, usually taking about a month. Ongoing advisory lasts at least 3 months, and then we decide together whether to keep the same scope.

    What kind of contract do you use?

    A simple B2B contract in English. I invoice in EUR, and EU companies get a reverse-charge VAT invoice. If you need an NDA, we can sign it at the quote stage.

    Still not sure?

    My business grows through referrals

    Your satisfaction is the foundation of my business. Thank you for every referral!

    Working with me is simple

    I'm easy to reach and easy to work with: a simple B2B contract and invoices in EUR.

    I implement, not just advise

    I run strategy and campaigns myself, and handle the rest with trusted partners I take responsibility for. My hands-on work is backed by education and certifications:

    SGH Warsaw School of EconomicsKozminski UniversityIE Business SchoolCXLGoogle PartnerShopify Partner
    Jędrzej Zarychta
    I manage budgets
    from €2k to €250k
    a month
    I work with e-commerce,
    online and offline
    businesses and agencies

    Book a free consultation

    In a free consultation we’ll check whether I can help and to what extent. If I can, I’ll send you a simple proposal with scope and pricing.

      By sending this form, you accept the Privacy Policy. I will use your details to reply to your inquiry.


      I usually reply within a few business hours