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Viacheslav TSOIVT
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Viacheslav TSOI

@viacheslavtsoi

Lead Shopify Engineer at PUREMETICS who refactored a legacy theme and developed custom cart functionality for international storefronts.

Ukraine
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At PUREMETICS, I own the technical architecture and ongoing development of an international Shopify storefront. I refactored a complex legacy theme into a more reusable architecture and developed custom cart functionality for promotions, bundles, and subscriptions.

At CONTARA, I developed custom Shopify storefronts for international DTC brands and contributed to a reusable theme foundation. I also implemented interactive bundle builders and subscription purchasing flows.

At SWEETSTACK DIGITAL, I designed backend workflows for a Shopify-based multi-vendor bakery marketplace. I implemented shipping-rate calculations with FedEx and USPS APIs, plus fulfillment workflows using ShipStation.

Earlier, I developed Shopify storefronts at YOURNEXTAGENCY and worked on frontend development at BNTOUCH and DAMEN SHIPYARDS. My work has included reusable interfaces, performance optimization, and Shopify integrations.

Experience

Work history, roles, and key accomplishments

PU
Current

Lead Shopify Engineer

Puremetics

Feb 2026 - Present (9 months)

Owned technical architecture and development of an international Shopify storefront. Refactored legacy theme into modular architecture, reduced technical debt, and implemented advanced cart functionality with promotions, bundles, and subscriptions.

CO

Lead Shopify Developer

Contara

Jun 2024 - Aug 2026 (2 years 2 months)

Developed custom Shopify storefronts for international DTC brands, specializing in building new themes from scratch. Implemented advanced product experiences, bundle builders, and subscription flows.

SD

Lead Shopify Developer

Sweetstack Digital

Sep 2022 - Jun 2024 (1 year 9 months)

Designed and developed backend workflows for a Shopify-based multi-vendor bakery marketplace. Implemented dynamic shipping-rate calculations, warehouse selection logic, and automated packaging selection.

YO

Shopify Developer

YourNextAgency

Sep 2020 - Sep 2022 (2 years)

Developed and customized Shopify storefronts for international clients. Built responsive interfaces and reusable frontend components, and worked with Shopify, WordPress, and Craft CMS.

DS

Tech Lead

Damen Shipyards

Jun 2014 - Sep 2019 (5 years 3 months)

Led frontend development of corporate websites, including WordPress development and long-term support. Coordinated team, mentored developers, and ensured code quality and architectural decisions.

CE

Front-end Developer

CETIS

Oct 2013 - Jun 2014 (8 months)

Frontend development of KVN.ru/amik.ru websites.

TH

Front-end Developer

Themoholics

May 2013 - Oct 2013 (5 months)

Frontend development of templates for Envato marketplace (ThemeForest).

TE

HTML Coder

TemplateMonster

Sep 2011 - May 2013 (1 year 8 months)

Expert in HTML5 and semantic markup, with mastery of W3C standards compliance.

HM

HTML Coder

Hosting Maks

Nov 2010 - Sep 2011 (10 months)

Expert in HTML and SEO-friendly coding, with mastery of W3C standards and accessibility.

Education

Degrees, certifications, and relevant coursework

SC

SkyEng Courses

English Lessons, English

2021 - 2022

Completed English lessons via SkyEng courses from January 2021 to May 2022.

EC

English Speaking Club

English Speaking Club, English

2019 - 2021

Participated in an English speaking club from January 2019 to January 2021.

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