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

Work experience.


Sebastian Walach eCommerce Consulting and Development

May 2019 - Present | Melbourne, Australia

Technical Support Lead


February 2019 - June 2019 | Melbourne, Australia

Working as a Team Leader in one of the fastest growing agencies in Australia. DotDev is a Shopify Plus partner focused on high-quality solutions that create efficiency and improve customer experience. Specialising in custom apps and integration with POS, CRM and ERP systems. Everyday point of contact for technical support for clients' Shopify Plus stores, apps and integrations.

Technical Lead

Convert Digital

June 2017 - February 2019 | Melbourne, Australia

Leading all Shopify and BigCommerce projects / Front End / Back End / Multi-platform integrations / UI & UX Designs / Project Management / Client Success / Client trainings / Marketing.

Full Stack Developer & Web Designer

Retail Directions

March 2016 - June 2017 | Melbourne, Australia

During my time in Retail Directions I was part of the Client Portal development team (design, front end, back end, testing, documentation). I was also responsible for design and development of the RD Corporate Website and web design, front end and graphic design for fashion brand milli lulo.

Media Assistant

Starcom Mediavest Group

September 2015 - February 2016 | Warsaw, Poland

At SMG Performance Marketing department I managed campaigns for top agency clients including T-Mobile, Santander, (Zalando, Asos etc.) and I was responsible for creating presentations for clients as well as planning, optimising, reporting and invoicing Facebook, Twitter, and SEM (Google Adwords and Doubleclick) campaigns, while maintaining day-to-day primary contact and cooperation with clients.


High End Kitchen

December 2014 - September 2015 | London, United Kingdom

At High End Kitchen I managed a young, growth-oriented startup company in London. Main responsibilities included contact with clients, quotations, design, visualisation, web design, distribution and transport.



February 2011 - August 2011 | Tarnowskie Gory, Poland

At Magmaris I designed interiors for private clients and shop concepts for Levi's and Guess. I was also responsible for creating and maintaining the company website and servers.

Available for freelance work.

sebastian walach


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