sebastian walach

sebastian walach

Is it me

As the world changes, the rules of commerce change. I apply modern design and tech to make sure you stay ahead. I develop and optimise best-in-class websites for international brands. If you like what you see, feel free to get in touch.

Technology Evaluation

Solution Design & Architecture

Business Analysis

Technical Business Case Development

Technology Evaluation & Selection

Platform Evaluation & Selection

In-Depth Customer Research

Content Assessment

Task Automation

Technology Delivery


JavaScript, HTML, PHP, REST, Liquid, Ruby on Rails, among many others

Backend Integrations

Data migrations

QA testing & Launch

Growth Optimization Support

Support & Maintenance

Monthly support

CRO & AB testing

Design & development




Customer Experience

UX/UI Design

Creative Direction

Visual Design

Branding & Identity

Competitive Audits

In-Depth Customer Research

Content Assessment

Website Accessibility



Growth Planning and Roadmapping

Omnichannel Assessment

International Expansion Assessment

ROI Modeling


Shopify Partners
Klaviyo Partners

With 9 years of experience working with eCommerce brands, I am known as one of the industry's top innovators in technology and design. I combine my technical expertise with a strong design sensibility, creating cutting-edge digital solutions that exceed client expectations.

Work experience.

Co-Founder & Technical Director


Sep 2018 - Present | Melbourne, Australia

Stop & Care is a full-service digital agency, driving sales and increasing value with exceptional websites, identities and campaigns.
With more than a decade of experience in the digital space, we are a trusted partner for leading brands across industries. Our team is composed of strategists, developers designers and creatives driven by the desire to create work that moves people and differentiates brands.
We develop digital, platforms and modules that have a real solution impact on our customers. We firmly believe that creating tailor-made digital projects is essential to the success of tomorrow's thriving businesses.


SWDev - Sebastian Walach eCommerce Consulting and Development

May 2017 - Present | Melbourne, Australia

As a proficient freelance professional, my suite of services encompasses an extensive range of ecommerce solutions. As a recognized Shopify Partner, I provide specialized services in Shopify/Shopify Plus development and extend expert technical consultancy in this domain. My expertise also involves guiding businesses through the intricate process of migrating from Magento to Shopify, ensuring a smooth and seamless transition. In addition to this, I possess adept skills in WordPress development and a refined aesthetic sense in eCommerce design, complemented by the ability to execute multiple eCommerce integrations.
My experience further extends to the arenas of eCommerce Project Management and Delivery, where I ascertain the timely and successful completion of projects. I also offer my expertise in eCommerce Technical Direction and Solution Design, customizing strategies to cater to the unique needs of each client. Furthermore, I deliver services related to custom domain setup, integration and interpretation of Google Analytics, and devising strategies for Search Engine Optimization (SEO). These are all aimed at enhancing the online visibility and reach of the businesses I work with, thereby offering a comprehensive and holistic ecommerce service package.

Technical Support Lead


February 2018 - June 2018 | Melbourne, Australia

In my previous role, I held a leadership position at DotDev, one of Australia's most rapidly ascending agencies. As a recognized Shopify Plus partner, our core focus was on the delivery of superior quality solutions, designed to enhance operational efficiency and foster an enriched customer experience.
Our specialization extended to the development of custom applications and the seamless integration of these with Point of Sale (POS), Customer Relationship Management (CRM), and Enterprise Resource Planning (ERP) systems.
Throughout my tenure, I acted as the primary technical liaison for our clients, providing consistent support for their Shopify Plus stores, applications, and integrations. My responsibility encompassed the daily resolution of technical concerns, reinforcing our commitment to customer satisfaction and continuous service improvement.

Technical Lead

Convert Digital

June 2016 - February 2018 | Melbourne, Australia

In my role as a Technical Lead, I managed an array of projects involving Shopify/Shopify Plus and BigCommerce platforms. My responsibilities covered areas like multi-platform integrations, crafting effective user interfaces (UI) and user experiences (UX), as well as managing the various stages of each project. I also took part in project scoping, determining cost estimates, and conducting training sessions for clients to ensure they're comfortable with our systems.
Being recognized as a Shopify Plus Expert and a Certified BigCommerce Developer underlines my proficiency in these areas. It highlights my capacity to work effectively with these platforms and deliver robust ecommerce solutions to clients.

Full Stack Developer & Web Designer

Retail Directions

March 2015 - June 2016 | Melbourne, Australia

In my tenure at Retail Directions, I was an integral part of the Client Portal development team. My involvement spanned across numerous areas including design, front end and back end development, testing, and documentation, showcasing a holistic approach to product development.
In addition, I was entrusted with the design and development of the Retail Directions Corporate Website, highlighting my capabilities in delivering corporate-level digital solutions. My responsibilities also extended to the realm of fashion, where I contributed to the web design, front end development, and graphic design for the prominent fashion brand, Milli Lulo. This multifaceted role underscored my versatile skillset in the field of web and graphic design.

Media Assistant

Starcom Mediavest Group

September 2014 - February 2015 | Warsaw, Poland

During my time in the Performance Marketing department at SMG, I was instrumental in executing marketing campaigns for some of our top-tier clients, which included industry leaders such as T-Mobile, Santander, (representing Zalando, Asos, etc.), and My role was multifaceted, encompassing a variety of key responsibilities.
My duties ranged from crafting compelling presentations for clients in both English and Polish, to the meticulous planning, optimization, and reporting of campaigns across diverse platforms such as Facebook, Twitter, Google Adwords, and Doubleclick. I also handled the invoicing for these campaigns.
Furthermore, I was the main point of contact for our clients, fostering a cooperative relationship through daily interactions. This role not only underscored my proficiency in managing high-profile digital marketing campaigns but also showcased my ability to maintain strong client relationships.


High End Kitchen

December 2011 - September 2014 | London, United Kingdom

At High End Kitchen, a dynamic, growth-oriented startup based in London, I had the privilege of managing the operations. This role encompassed a broad range of responsibilities and gave me a holistic understanding of business operations in a fast-paced startup environment.
My responsibilities spanned from direct communication with clients, providing quotations, and carrying out design and visualisation tasks. I was also involved in web design initiatives, contributing to the company's digital presence. Beyond these, I oversaw distribution and transportation logistics, ensuring the seamless delivery of our products to clients. This position allowed me to demonstrate my leadership skills, multi-tasking abilities, and a strong commitment to customer satisfaction in a dynamic, startup setting.



February 2011 - August 2011 | Tarnowskie Gory, Poland

While at Magmaris, I held a multifaceted role that allowed me to blend creative design with technical expertise. I designed interiors tailored to the unique needs and styles of private clients and also created innovative shop concepts for established brands such as Levi's and Guess. These projects not only demonstrated my ability to create visually appealing and functional spaces but also my understanding of how to cater to diverse brand identities.
Beyond my design duties, I also undertook the responsibility of managing the company's digital infrastructure. This involved creating and maintaining the company's website and servers, ensuring a reliable and engaging online presence for the company. In this role, I was able to display my proficiency in both the creative and technical aspects of design and digital management.

Available for freelance work.

sebastian walach


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