Helping companies earn more, not spend more on marketing.
Fractional CMO and Interim Marketing Manager for e-commerce, B2C and B2B companies
I work as the head of marketing in your company: ongoing, at the scope you choose, or for a fixed period. Companies I’ve worked with include ESTYL.pl, heycar, Holi Health, Tutlo and Natu.Care.
I don’t stop at recommendations. I run strategy and campaigns myself, and for creative, SEO, more complex analytics or IT I have trusted partners whose work I take responsibility for.
- Strategy and campaigns measured by margin and sales, not clicks
- From audits and consulting to ongoing work and interim roles during change
- One point of contact and one clear report for you and your leadership team
Jędrzej ZarychtaFractional CMO and Interim Marketing Manager
12+ years of experience150+ projectsE-commerce, B2C, B2B
Book a free consultation
Brands I've worked with
How I can help
Outsourced marketing
You don't have a marketing team and don't want to build one. I do strategy and campaigns myself, and bring in trusted partners for creative, SEO or IT.
from €1,250 / monthLearn more →
Fractional CMO
A part-time head of marketing. You have a team or agencies, but nobody to lead them. I set the strategy and budget, run the key campaigns and take responsibility for results.
from €1,250 / monthLearn more →
Interim Marketing Manager
Your head of marketing is leaving or the company is going through change. I join for a fixed period, start with an audit and quick wins, and help you hire a successor.
from €3,500 / monthLearn more →
Interim E-commerce Manager
The same for an online store. I take over sales, margin, campaigns and the team, and hand store changes to your IT team or partners.
from €3,500 / monthLearn more →
Marketing consulting
You have people doing the work, but no direction. I do marketing audits and strategies, plans for entering new markets and ongoing advisory.
audit from €1,250Learn more →
E-commerce consulting
Your store has hit a ceiling, or revenue grows but margin doesn't. I do store audits and e-commerce strategies and provide ongoing advisory, with campaigns set up for margin.
audit from €1,250Learn more →
Entering Poland? See how I help foreign companies with a go-to-market plan, pilot and campaigns.
Channels where I run campaigns myself
Selected project results
E-commerce, beauty
€15k
in additional monthly profit from growth initiatives, plus 350+ new customers a month
Offline business, health
€1.4M+
in annual revenue from subscription customers won through campaigns, with 25% of leads turned into sales
B2B services company
50 SQLs
sales-qualified leads in the first month and 10 days to validate the campaign assumptions
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
Online subscription business
20,000+
sales leads, 8% of which became customers
Examples of campaign scale
38,000 transactions
from Google Ads campaigns in one e-commerce project, at a ROAS of 324%: €300k in budget and €1M in revenue
€100k a month
of Meta Ads budget in one project, at a customer acquisition cost of about €30
from €2k to €250k
monthly ad budgets I work with: from small companies to large online stores
Data from Google Analytics and Meta Ads, no client names. PLN amounts converted to EUR and rounded.
Why companies work with me
I work with a few companies at a time, not dozens, so I know each of them from the inside.
I work where marketing, business and technology meet
I understand margins, offers and how a company really works, and I know the technology behind online stores and marketing tools. That's why I treat marketing as a way to make money, not an end in itself.
12 years on the business side
I built a digital marketing department from scratch at an agency, and at Hemp Juice I went from advisor to co-owner and to selling the company. I've delivered more than 150 projects.
I count margin, not clicks
I base decisions on CAC, LTV, ROAS and margin. I show results in sales, not in reach and clicks.
I understand business owners
I run a company myself, so I know every euro you spend on marketing has to pay for itself. I tell you plainly what works and what's worth switching off.
Investors and bootstrapping
I've worked with companies after a funding round, before an exit and with self-funded ones. I know which numbers an investor will ask about.
Entering a new market
I prepare a go-to-market plan and a pilot before you spend a big budget. That's how my work with heycar started. See entering the Polish market.
One point of contact
I run strategy and campaigns myself, and coordinate and take responsibility for the partners' work. You don't have to manage several vendors.
Fractional CMO, interim manager, agency or full-time hire?
| Fractional CMO | Interim manager | Agency | Full-time CMO | |
|---|---|---|---|---|
| Model | Ongoing work, scope matched to your company’s stage | A fixed-term role inside your organization | Tasks within an agreed scope | Full-time employee |
| Responsible for | Strategy and results of all marketing | Continuity and running the team during a transition | Executing the agreed work in its own channels | Strategy, team and results |
| Start | After a consultation and a quote | After a consultation and a quote | After a brief, a pitch and a proposal | After a hiring process that takes months |
| Works best when | You need a senior marketer, but not full-time | Someone has left or the company is going through change | You already have a strategy and someone to manage it | Marketing needs day-to-day leadership of a large team |
Fractional CMO
ModelOngoing work, scope matched to your company’s stage
Works best whenYou need a senior marketer, but not full-time
Interim manager
ModelA fixed-term role inside your organization
Works best whenSomeone has left or the company is going through change
Agency
ModelTasks within an agreed scope
Works best whenYou already have a strategy and someone to manage it
Full-time CMO
ModelFull-time employee
Works best whenMarketing needs day-to-day leadership of a large team
I work in both models. You can read more on the Fractional CMO and Interim Marketing Manager pages, and about online stores on the Interim E-commerce Manager page.
About me
12+years of experience
150+projects
delivered
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
In just a few months we saw a steady flow of B2B sales leads
Working with Jędrzej on B2B marketing translated into a strong flow of sales leads within just a few months. Jędrzej not only developed the right marketing strategy, but also connected it with our sales strategy and then launched ad campaigns in Google, Meta and LinkedIn Ads. At GRANTS.CAPITAL we were looking for a Head of Marketing, but working part-time with Jędrzej has been far more effective than many full-time hires or agencies we have worked with.
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.
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.
Jędrzej is a top-class expert in digital marketing and marketing strategy
We worked on a long-term, complex B2B performance campaign where, on the agency side, he helped us choose the most effective solutions for our industry and hit our goals and demanding KPIs, with full commitment and the highest professionalism. 😉 The marketing activities and solutions he proposed were always carefully thought through, matched to our business, properly quantified and then delivered on time. As a result, making decisions and assessing the results of our cooperation was much easier and truly satisfying.
Never hesitates to challenge the status quo
As a passionate individual who is interested in growth, Jedrzej brings a passion for it - as well as his personal experience and knowledge - to the game. It is evident that he is a very active and energetic person who constantly contributes new ideas and contributions to the team as well as to the projects and never hesitates to challenge the status quo when necessary.
In my personal experience, I enjoyed his cheerfulness, positivism, and sense of fellowship.
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 🙂
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.
I'm sure every client will be well "looked after"
Together with Jędrzej and KERRIS we started our digital marketing journey, which continues to this day. Always open to the client's needs and proactive in proposing solutions. I'm sure every client will be well "looked after". Highly recommended!
Jędrzej is good at understanding what the client needs
We worked with Jędrzej for almost 2 years. In that time he proved to be a very understanding and flexible partner. Real professionalism, courtesy and a knack for understanding the client's needs are what set Jędrzej apart!
How we start working together
01
Free consultation
Send me a message and we'll talk online, or over coffee if you're in Warsaw. We'll discuss your company, goals and budget.
02
Engagement model and proposal
I propose a model: ongoing work, interim or a project. The proposal includes the scope, duration and an NDA.
03
Kickoff and quick wins
We set up access and name a decision-maker. In the first weeks I run an audit and implement the first improvements.
04
Regular cadence
A short meeting every week and a monthly report showing the impact of marketing on sales.
How much does it cost to work with me?
Audit and priorities
from €1,250
one-time, excl. VAT
Ongoing support
from €1,250
per month, excl. VAT
Interim
from €3,500
per month, excl. VAT
Complete strategy
from €6,000
per project, excl. VAT
I describe the ongoing support packages on the Outsourced marketing and Fractional CMO pages. You get an exact quote after a free consultation, and you pay the ad budget directly to the platforms.
Frequently asked questions
Working together
What is a fractional CMO?
An experienced head of marketing who works for a company within an agreed scope rather than full-time. They're responsible for marketing strategy, budget and results as if they were part of the leadership team.
How is a fractional CMO different from an interim manager?
Fractional CMO is ongoing work with no end date. An interim manager joins the company for a fixed period, e.g. during a hiring process or a change, and at the end hands the role over to a successor.
Can you be our head of marketing or head of growth?
Yes. A head of marketing or head of growth is usually a full-time employee, and I take on that role without a full-time contract: as a part-time fractional CMO or as an interim marketing manager for a fixed period, e.g. until a hiring process is complete. The scope is similar: I set the direction and budget, run the most important campaigns, coordinate the team and take responsibility for results.
Which engagement model should I choose?
If you have a team or agencies, a fractional CMO usually works best. If you don't have a marketing team, outsourced marketing. If you need a head of marketing during a period of change, interim. In a free consultation I'll suggest what makes sense in your situation.
Do you help foreign companies enter the Polish market?
Yes. I prepare a go-to-market plan, run a pilot and campaigns in Poland, and coordinate local partners. That's how my work with heycar started. More on the Poland market entry page.
Pricing and contract
How much does it cost to work with me?
Audits start from €1,250, ongoing support from €1,250 per month and interim from €3,500 per month, excl. VAT. You pay the ad budget directly to the platforms.
What kind of companies do you work with?
Online stores, B2C brands and B2B companies, from startups to companies after a funding round. I know industries such as beauty, food, health, fashion, automotive, education and software.
Do you work with companies outside Poland?
Yes. I work remotely with companies 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 sign NDAs?
Yes, already at the quote stage. I work on a simple B2B contract in English, with invoices in EUR.
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:
I manage budgets
from €2k to €250k
a month
from €2k to €250k
a month
I work with e-commerce,
online and offline
businesses and agencies
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.