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Shopify Plus agency London - oContis Studio custom app development and stack audits

Infrastructure for
Shopify → stores
Shopify PlusShopify Plus agency London. Custom app development, Shopify stack audits, checkout extensions, and Shopify Stack Recovery for established DTC brands.

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For established DTC on Shopify Plus

oContis Studio
Shopify Plus agency London

[ˈkon.tis] /styOOdIOh/

When checkout, apps, or theme architecture hold the business back, more campaigns rarely help. We work with Shopify Plus teams that need a scalable foundation and a sharper merchant experience before the next phase of growth.

Restore order to Shopify stacks that no longer scale with the business.

Through Shopify Stack Recovery, we build custom app development, theme architecture, checkout extensions, and merchant experience improvements where off-the-shelf tools fall short.

Octavian ContisBook a stack assessment See Shopify development services

Shopify Stack Recovery

  1. 01

    Diagnose

    Structured stack audit across theme, apps, data model, integrations, checkout, and merchant workflows. Plain-language findings your team can act on.

  2. 02

    Prioritize

    Roadmap with foundation before features. Honest scoping, including what should not be rebuilt yet.

  3. 03

    Rebuild

    Scalable custom work where off-the-shelf fails: themes, apps, data architecture, checkout extensions, and merchant experience.

  4. 04

    Partner

    Retained technical relationship with one agency that knows your stack, history, and roadmap.

BDXY Studios

Replatforming and Migration · Shopify Theme Development · Brand discovery

DES-VU

Shopify Theme Development · Branding and Identity · Integrations and System Optimisation · Loyalty and Subscription Strategy

Kloudy Matcha

Shopify Theme Development · Integrations and System Optimisation · Loyalty and Subscription Strategy

Lanoguard

Shopify Theme Development · Conversion Rate Optimisation · Shopify App Development · Shopify UI Extensions and Functions · Integrations and System Optimisation

RTR Vehicles

Data Architecture · Shopify App Development · Integrations and System Optimisation

Scrumbles

Shopify App Development · Shopify Theme Development · Shopify UI Extensions and Functions · Replatforming and Migration · Data Architecture · Integrations and System Optimisation · Personalisation
Projects

  • TechnologyShopify stack audit, theme development, app development, merchant experience, UI extensions, replatforming, migrations, and integrations

  • CreativeShopify branding, content strategy, design systems, and ecommerce data architecture

  • StrategyShopify growth strategy, conversion rate optimisation, brand discovery, market analysis, and personalisation

  • MarketingShopify loyalty strategy, email and SMS marketing, social media, personalisation, and A/B testing

From the blog

Latest Shopify insights

Essential reads

  1. 01 E-Commerce Strategy 11 minutes read Shopify and Claude Connector: Setup, Benefits, and Risks for Merchants Shopify's Claude connector lets you query and edit store data from chat, but permissions are coarse and write actions hit production. Learn how to set it up safely, what it is good for, and where it breaks.
  2. 02 Storefront Architecture 14 minutes read How to Fix Shopify Markets Cache Issues When Products Disappear After a Catalog Split Stale banners, intermittent 404s, and products vanishing after a Shopify Markets split usually trace to catalog publishing gaps or edge cache propagation, not your theme. Learn how to diagnose and fix it.
  3. 03 Storefront Architecture 11 minutes read Shopify UCP Global Catalog: Lessons From Building a Catalogue Explorer What we learned building a UCP Global Catalog explorer: product data architecture, catalog visibility, pagination limits, and hint-based infinite scroll against search_catalog.
  4. 04 E-Commerce Strategy 13 minutes read Shopify Payments Reserves: Does Upgrading to Plus Change Anything? Shopify Payments reserves can hold thousands in working capital after chargeback events. Upgrading to Plus rarely speeds Credit Risk reviews. What merchants should do instead.

From our first meeting with Octavian we came away knowing that he had heard and understood what we wanted done to improve our store and was straightforward and honest about what he could, and could not, accomplish. We are very pleased with the work he has done for us and would enthusiastically recommend him.

Jennifer FCo-Founder Jennifer F Heart Of Gold Books

It was great working with Octavian. It was easy to communicate with him and he put in a lot of effort to explain and showcase everything he had done. We are happy with the results and working with him was a smooth and efficient experience.

Jan LCOO Jan L JUAdesign

Octavian was very responsive and quick to implement all of our requested features and adjustments. His attention to detail and ability to understand our vision made the collaboration seamless. We appreciated his proactive communication throughout the project, and the final result exceeded our expectations.

Samuel WMarketing and Sales Associate Samuel W Rikumo

Octavian is an exceptional developer to work with. He consistently finds the best solutions and approaches each challenge with thorough analysis and careful consideration. His problem-solving skills are outstanding—he doesn't just implement what's asked, but thinks deeply about the underlying issues to deliver optimal results. What impressed us most was his reliability with deadlines; he consistently delivered on time without compromising quality.

Tanya GProduct Owner Tanya G Yumove

Octavian always works well within tight deadlines, communicates effectively and always tries to find the best solution to any issues we have. Beyond his technical expertise, Octavian is genuinely pleasant to collaborate with, making the entire process smooth and enjoyable. We highly recommend him for any project.

Demi MOperations Manager Demi M DÈS-VU

Octavian always works well within tight deadlines, communicates effectively and always tries to find the best solution to any issues we have. Beyond his technical expertise, Octavian is genuinely pleasant to collaborate with, making the entire process smooth and enjoyable. We highly recommend him for any project.

Adam WFounder Adam W Thalo Denim

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