Kozak Group is a trusted eCommerce development firm with over 11 years of expertise building scalable B2B platforms and top-notch eCommerce websites. As a leading Magento development agency & Shopify development partner, we deliver 90+ PageSpeed sites from startups to enterprises. Headquartered in Poland, our 50+ experts provide full-cycle solutions-strategy, design, development, CRO (20-50% lifts), speed optimization, and ERP/CRM integrations - for resilient stores that drive revenue and loyalty
Core Services from Kozak-group
eCommerce Development Custom Magento, Shopify, WooCommerce stores with multi-vendor, inventory, subscriptions, and headless setups for retail/wholesale
Website Speed Optimization 90+ PageSpeed via compression, caching, PWA—slashing bounce rates 40% for high-traffic SaaS
Mobile/Web Apps Cross-platform apps with omnichannel sync for B2B/retail growth.
Our eCommerce development services cover a full lifecycle - from initial strategy and UI/UX design to robust development and post-launch optimization. We excel in creating resilient B2B eCommerce stores equipped with advanced features such as multi-vendor marketplaces, real-time inventory management, subscription models, and hyper-personalized customer journeys.
Whether you need a cutting-edge headless Shopify development setup for omnichannel retail, a feature-packed WooCommerce site for small-to-mid businesses, or intricate Magento development for enterprise-scale wholesale and SaaS operations, our team tailors every solution to your unique industry needs. Seamless integrations with leading ERP systems like SAP or NetSuite, CRMs such as HubSpot or Salesforce, and third-party APIs form unified ecosystems that scale effortlessly with your business growth.
Min project size
$10,000+
Hourly rate
$25 - $49 / hr
Employees
50 - 249
Locations
Kraków, Poland
Year founded
Founded 2015
1 Locations
Kraków , Poland
No have been added yet...
Pricing Snapshot
Min. project size
$10,000+
Avg. hourly rate
$25 - $49
/hr
Rating for cost
4.9
/5
What Clients Have Said
Kozak Group offers competitive pricing with transparent communication, as highlighted by clients who appreciated no budget overages and timely project completion. They handle various e-commerce projects, primarily on Magento, with teams of 1 to 8 members, ensuring quality and efficiency.
End-users of the websites developed by Kozak Group provided positive feedback, particularly appreciating the easy-to-use interfaces and appealing designs, which contributed to a better customer experience.
Expertise in Magento Development
Multiple reviews commend Kozak Group's proficiency in Magento development. Clients from diverse industries highlighted their ability to handle complex e-commerce functionalities and integrations with third-party APIs, ensuring smooth project launches and user-friendly interfaces.
Impressive Developer Talent
Clients were particularly impressed by the skill and creativity of Kozak Group's developers. Their ability to deliver complex, high-quality solutions efficiently was noted as a standout feature.
Room for Faster Delivery
While clients were generally satisfied with the timely delivery of projects, there was feedback suggesting that improving the speed of delivery could be beneficial. This is an area for potential improvement.
Professionalism and Honesty
Clients valued Kozak Group's professionalism and honesty. The team's transparent communication and fair pricing were deciding factors for many clients in choosing to work with them.
Flexible and Adaptive
Kozak Group showcased flexibility in their project management approach, adapting to the specific needs of clients and their projects. This adaptability ensured that client requirements were met efficiently.
"We're impressed with the quality of their work and attention to detail."
Jul 13, 2022
Co-Founder, Stellar Soft
Jack Ananchenko
Verified
Other industries
Kyiv, Ukraine
11-50 Employees
Online Review
Verified
Kozak Group is providing e-commerce development support for a web development agency. They're tasked with integrating an end client's Magento site with a third-party API from scratch.
Kozak Group has delivered their work on time, allowing for the smooth launch of the project. They exhibit a high level of professionalism, timeliness, and supportiveness. The collaborative team communicates well, and their attention to detail and quality of work ensure a long-term partnership.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm a Co-founder at Stellar Soft, web development agency that has been on the market for a while now. We do web, custom, e-commerce development.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Kozak Group, and what were your goals?
We hired them for multiple E-Commerce based projects (Magento to be more specific) that we needed their help in development and maintenance. Those were projects from scratch and maintenance type of projects.
SOLUTION
How did you select this vendor and what were the deciding factors?
They were recommended by a person from my network who used to work with the other company I trust a lot. I liked the pricing and transparency in communication. From A to Z, we discussed the details in the logical way.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
We had an intro meeting to discuss the scope of work which was a standalone project for an existing Magento-based client. They needed to integrate their website with a 3rd party API (Cloud ERP) from scratch. We did their due diligence to uncover the details and professionally put together a scope of work. After that we received a quote as well as the timeline which was fulfilled in its entirety.
How many people from the vendor's team worked with you, and what were their positions?
Can you share any measurable outcomes of the project or general feedback about the deliverables?
Clear communication along the way, weekly meetings;
No overages in budget or timelines;
Smooth launch of the project.
Describe their project management style, including communication tools and timeliness.
As we had a decomposition document with the estimate after the scope discovery, we utilized the line items as tasks and then, kept track of everything the PM tool called Asana. Weekly meetings were included.
What did you find most impressive or unique about this company?
We're impressed with the quality of their work and attention to detail. Very professional.
Are there any areas for improvement or something they could have done differently?
None.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
E-Commerce Development for Tea & Teaware Brand
E-Commerce Development
$50,000 to $199,999
Jan. 2019 - Apr. 2022
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"With Kozak Group, the project was completed and delivered on time."
Apr 25, 2022
Managing Director, Tea & Teaware Brand
John Romano
Verified
Other industries
Fort Lauderdale, Florida
1-10 Employees
Online Review
Verified
Kozak Group developed complex Magento features and integrated additional third-party modules for a tea and teaware brand. They aimed at recreating the site and its functionalities.
Kozak Group's output received great feedback from customers for its easy-to-use UI and appealing look. The team regularly collaborated via Skype, ensuring a smooth communication flow and timely delivery. Customers can expect a professional and honest vendor team.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I am the founder of a tea and teaware brand providing premium, hand-crafted tea accessories and premium quality teas.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Kozak Group, and what were your goals?
We hired the Kosak Group to help recreate our consumer website and wholesale website functionality. Their excellent team helped us rebrand with a more sophisticated and luxurious look to align with our extensive collection of premium quality teas and teaware.
SOLUTION
How did you select this vendor and what were the deciding factors?
We have interviewed several developers and designers, and we ultimately selected the Kosak Group for their professionalism and understanding of the current assets and our future needs using the Magento platform.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
We worked in collaboration with our internal team to provide the artwork and user interface needed for the team at Kosak Group to implement. The Kosak Group developed most functionalities using native Magento extensive features and integrated just a few additional third-party modules in order to keep the coding as clean as possible.
How many people from the vendor's team worked with you, and what were their positions?
A project manager was our main point of contact and we had a full time back-end developer and front-end developer working with our internal team.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
Our website has received great feedback from our customers as they love the easy user interface and very appealing look of the website.
Describe their project management style, including communication tools and timeliness.
We used Jira as a project management tool, but also collaborated via Skype for real-time interactions. With Kozak Group, the project was completed and delivered on time.
What did you find most impressive or unique about this company?
Honesty is at the core of all the people that we hire along with deep knowledge of coding and the latest technology trends, and the Kosak Group did not disappoint.
Are there any areas for improvement or something they could have done differently?
We were satisfied with their services and timely delivery of tasks and projects. However, improving the speed of delivery is something that all agencies should always strive for as it is something that most clients would appreciate.
RATINGS
5.0
"Excellent. Highly Recommended."
Quality
5.0
Service & Deliverables
"Professional"
Schedule
5.0
On time / deadlines
"Very efficient."
Cost
5.0
Value / within estimates
"For Magento it was a fair cost."
Willing to Refer
5.0
NPS
"We have already recommended the Kosak Group to others.
Magento & Custom PHP Development for E-Commerce Dev Agency
E-Commerce Development
$50,000 to $199,999
Jan. 2019 - Apr. 2022
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
“The quality of their development has been hard for me to find elsewhere in almost 20 years in this industry.”
Apr 19, 2022
CEO & Co-Founder, Pineapple Development
Donizete (Donny) Minchillo Jr
Verified
Other industries
St. Petersburg, Florida
11-50 Employees
Online Review
Verified
An e-commerce web development agency retained Kozak Group to work on dozens of Magento and custom PHP development. For each project, they focused on the user shopping journey, search, and check-out functions.
The client never had an issue with Kozak Group’s deliverables. The client’s customers were always pleased with the final product, which led to long-lasting relationships with the client. Kozak Group’s team was professional and accommodated the weekly and daily meetings required for complex projects.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
Pineapple Development is an ecommerce web development agency, and I am the owner and CEO.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Kozak Group, and what were your goals?
Magento, Custom PHP - we have various large clients with complex development needs and often need to outsource for skilled developers.
SOLUTION
How did you select this vendor and what were the deciding factors?
We've crossed paths on projects in the past and had insight into the capabilities of the team. We looked of course for Magento certifications along with other certifications held by developers on their team and worked together over time on various projects to build up a working relationship based on trust. They have always been fair from a cost perspective and also had an impressive portfolio of past work when we were brand new working together and didn't have the historical context of working together yet.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
Here again, I want to share a general review of working with this company. We've worked together on dozens on projects at this point, primarily focused on Magento and custom PHP work. The projects we take on are always fairly complex eCommerce projects, so functionality related to user shopping journey, custom checkout experiences, search functionality, product configuration, various payment configurations and setups, sites with complex security requirements, etc. have all been a part of various projects we've worked on together.
How many people from the vendor's team worked with you, and what were their positions?
We've consistently worked with 4-8 members of the Kozak team depending on the size of whatever current project we're working on and have had the pleasure of working with team members who are developers, project managers as well as members of the admin and management team.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
For us the ultimate measure for any project is being able to deliver an eCommerce site to our end clients that works according to the project specs outlined and that supports the client's customer traffic and volume of sales. Amongst all the projects we've worked on with the Kozak team, we've never had an issue delivering a final product the client has been happy with, and often clients stay with us for ongoing maintenance and improvements which we often call on Kozak for support with as well.
Describe their project management style, including communication tools and timeliness.
Professional, timely, detailed and to the point. Project managers work to help make sure specs are clear for the developers and timelines stay on track. We focus on online communication and actual work being done, but the team has always accommodated when we've had more complex projects that require stand-up or status update calls - sometimes weekly, sometimes daily. They've always been willing to adapt and accommodate client needs in accordance with what it will take to get the job done efficiently and at the highest of quality standards.
What did you find most impressive or unique about this company?
The sheer talent of their developers. Highly skilled, efficient and creative. The quality of the development has been hard for me to find elsewhere in almost 20 years in this industry.
Are there any areas for improvement or something they could have done differently?
Nothing that stands out in my mind. It has been a pleasure working with them now for a few years on many different projects and I look forward to continuing to work together for years to come.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Magento 2 Web Dev & E-Commerce Consulting for Car Parts Shop
E-Commerce Development
$10,000 to $49,999
Feb. 2022 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0
"They have an outstanding response time and they promptly attend to the issues that arise to provide solutions."
Apr 8, 2022
E-Commerce Specialist, ATO24 AutoTeileOnline GmbH
Anonymous
Verified
Automotive
Bielefeld, Germany
11-50 Employees
Online Review
Verified
Kozak Group builds a Magento 2 store for a car parts shop. They also provide guidance about the e-commerce industry.
So far, the client is happy with the ongoing advisory services from Kozak Group's team. The team uses various tools for both communication and project management. Their responsiveness and quick actions to provide solutions impress the client.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm an E-Commerce Specialist for a car part company. We sell oils, coolants, grease, and other lubricants for engine powered vehicles and machines.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Kozak Group, and what were your goals?
Kozak Group handles all development work on our Magento 2 store in close coordination with our e-commerce team. In addition, they are available to us in an advisory capacity.
SOLUTION
How did you select this vendor and what were the deciding factors?
We selected the vendor based on their past projects and recommendations.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
Kozak Group takes over in close coordination with our e-commerce team all development work on our Magento 2 store for us and is available to us in an advisory capacity.
How many people from the vendor's team worked with you, and what were their positions?
The team of our contact persons currently consists of a project manager and a developer.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
Kozak Group is always at our side with competent advice and excellent work. Together we always implement projects within the agreed timeframes and with very satisfactory results.
Describe their project management style, including communication tools and timeliness.
We use several communication and project management tools. Kozak Group works state of the art, which greatly facilitates communication and makes just in time meetings possible, exactly when we need them.
What did you find most impressive or unique about this company?
Kozak Group can also draw on a broad repertoire of experience outside of the project team. They have an outstanding response time and they promptly attend to the issues that arise to provide solutions. Even during the current crisis situation at their site in Ukraine, Kozak Group is always at our side as our partner and maintains the quality of work that we have come to expect from them!
Are there any areas for improvement or something they could have done differently?
We have absolutely nothing to complain about at this point.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
4.5
Value / within estimates
Willing to Refer
5.0
NPS
Web Development for Sports Fashion Shop
Web Development
Less than $10,000
Oct. 2018 - Jan. 2019
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"Our collaboration with them was good and very productive."
Apr 23, 2021
Founder, Vintage Sports Fashion
Roman Metrik
Verified
Retail
Zaporizhzhya, Ukraine
11-50 Employees
Online Review
Verified
Kozak Group developed a website for a sports fashion shop. They provided full-stack development using jQuery, Magento2, MySQL, PHP, HTML, and CSS.
Thanks to Kozak Group’s efforts, the website was well delivered. The team consisted of helpful developers who accommodated all the technical concerns of the client. They were experienced, dedicated, and flexible.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I’m founder of web-store specialising in classic football shirts and other sports clothing. Our store started its history in 2014 from a small ebay account, and now we can present one of the largest vintage jerseys stock on the internet. We are dedicated to finding an exclusive t-shirts for our customers allowing them to stand out from the crowd. Many people want to enjoy their childhood memories, and shirt with favourite player or from historical season should please every football fan.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Kozak Group, and what were your goals?
We hired them to help us not just to build a good website, but also to optimize the page speed the way it suits all the Google Analytics standards.
SOLUTION
How did you select Kozak Group and what were the deciding factors?
We have been looking for a company that meets our expectations for a long time. The best by our standards turned out to be Kozak Group.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
They did full-stack development work for our platform. They used jQuery, Magento2, MySQL, PHP, HTML, CSS
How many people from the vendor's team worked with you, and what were their positions?
Team that worked with our project included 3 specialists : Technical Lead and Devops Backend developer Frontend developer
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
Give the project a lot of thought before you reach out to them because it makes the process more efficient. Have a dedicated liaison on your end. As the founder, there are times when I’m so swamped that I can’t get back to them right away.
Describe their project management style, including communication tools and timelines.
The team is very helpful and flexible. They have an experienced management and software development team. Additionally, our cooperation and teamwork with them have been good.
What did you find most impressive or unique about this company?
Our collaboration with them was good and very productive. They were always in touch about any technical questions, helped to fix issues and I was really impressed about the level of assistance. Thanks to that, start of my store was successful!
Are there any areas for improvement or something they could have done differently?
In the beginning, it was challenging to find the right people with the right skills. Management was open to helping us get new resources with the required skills.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Showing 1-5 of
5 Reviews
Our Story
We are Kozak Group, an e‑commerce development team specializing in Magento, Shopify and WooCommerce. Our mission is to boost online performance through Magento optimization, Hyvä front‑ends, migrations, integrations, and smart CRO optimizations.
We deliver staff augmentation and dedicated teams, combining certified Magento expertise, fast front‑end work, and measurable client wins (AllianceBlock, MoveBoard, ChaussureElite) to improve speed, SEO, and conversions.
Meet the Team
Vladyslav KoretskyiCOO
I’m an operational executive with vast experience in e-commerce technology. I ensure seamless system operations and improve site performance through continuous monitoring and analysis.
What Sets Us Apart
Certified Magento Expertise
Over 11 years optimizing hundreds of Magento sites, our certified developers deliver 50% faster loads and 40% SEO gains using PHP/MySQL, REST APIs, and Docker
Versatile Platform Mastery
As a premier Magento development partner and Shopify specialist, we build scalable stores with ERP/CRM integrations, headless setups, and reach 90+ PageSpeed scores across retail to B2B
Client-Centric Partnership
From Krakow, our agile experts prioritize your goals with tailored CRO, speed optimization, and long-term support - earning 98% retention through proven results
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