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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.

One trusted partner ◊ Structured foundations ◊ Merchant experience ◊
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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.

★★★★★ Trusted by Shopify Plus merchants ★★★★★

Trusted brands include DES-VU, Kloudy Matcha, Lanoguard, QDQ Club, RTR Vehicles, Scrumbles

  • DES-VU
  • Kloudy Matcha
  • Lanoguard
  • QDQ Club
  • RTR Vehicles
  • Scrumbles
Replatforming and Migration · Shopify Theme Development · Brand discovery
Shopify Theme Development · Branding and Identity · Integrations and System Optimisation · Loyalty and Subscription Strategy
Shopify Theme Development · Integrations and System Optimisation · Loyalty and Subscription Strategy

17.2% conversion lift

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

39% gross sales lift

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

From the blog

Latest Shopify insights

Essential reads

  1. 01 Storefront Architecture 10 minutes read Shopify Theme Customisation Limits: When Your Store Leaves the Supportable Path Shopify theme customisation leaves the supportable path when Liquid, section groups, and dynamic sources diverge. How to tell, and what to do next.
  2. 02 E-Commerce Strategy 8 minutes read Shopify Sidekick's Continual Learning Flywheel: What Merchants Should Know Shopify Sidekick now runs a daily continual learning loop on production traffic. What the flywheel means for Admin GraphQL, merchant ops, and when custom stack work still matters.
  3. 03 E-Commerce Growth 13 minutes read How to Fix Shopify Operational Friction When Simple Tasks Still Take Too Long Simple Shopify tasks that still take spreadsheets, exports, and three apps usually signal stack debt, not missing features. Diagnose friction by root cause and fix the foundation before adding tools.
  4. 04 Storefront Architecture 17 minutes read Shopify Soft Navigation and the Web Pixel Gap Liquid partials enable app-like soft navigation on Shopify themes. Benchmarks show ~24× faster in-store route changes, with a modest first-load trade-off. Web pixel customer events still do not follow standard storefront events after a region swap.
Merchant experience · Custom apps · Checkout →
Stack audits & long-term partnership →

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

Book a discovery call

Start with a stack assessment

Tell us what is blocking your next initiative. We will confirm whether a stack audit, rebuild, or long-term partnership is the right entry point.

Step 1 of 3 What you need help with