Software Excellence

Engineering you can build a business on.

Fractional CTO leadership, custom web apps and websites, Shopify ecommerce and AI integrations. Led personally by Marian Sorca, building software since 2010 and committed to getting the details right.

Projects from $2,000 Reply within 24 hours

2010
Building software since
400+
Sites & apps shipped
250+
Clients
4.9/5
Average client rating

Trusted by US businesses since 2014.From private aviation and luxury ecommerce to manufacturing, marketing platforms and SaaS.

(01) What we do

Five ways to work with us.

Every engagement is led by Marian personally, with clear scope and responsibility throughout the work.

01 / Leadership

Fractional CTO

Senior technical judgment, without a full-time hire.

  • Architecture & code review
  • A technical roadmap that fits your runway
  • Hiring & vendor oversight
  • Security & scaling decisions

Fractional CTO and lead developer for BLAK International, a private aviation company, from 2022 to April 2026, and for Spare Space, a US marketplace.

Fractional CTO →
02 / Web apps

Web apps

SaaS products, marketplaces and internal tools, built end to end.

  • MVPs & full products
  • Two-sided marketplaces
  • Dashboards & admin panels
  • Taking over builds others couldn’t finish

We built and run SelfManager.ai, our own AI-powered SaaS.

Web apps →
03 / Ecommerce

Ecommerce on Shopify

Shopify and Shopify Plus stores, and the custom work behind them.

  • Custom themes, from Figma or from scratch
  • Custom functionality & checkout rules
  • Integrations with CRM, invoicing & analytics
  • Ongoing development on retainer

We run and scale Shopify Plus stores, including a US store that passed $10M in sales in 2026.

Ecommerce →
04 / AI

AI & integrations

AI features that do real work, and the integrations that connect your tools.

  • AI features inside your product
  • Automations between the tools you already use
  • APIs & webhooks
  • MCP servers for ChatGPT & Claude

14 AI features in production in SelfManager.ai.

AI & integrations →
05 / Websites

Custom websites

Designed for your brand and coded by hand, not built from a template.

  • Design included
  • Coded from the ground up, or on WordPress, Webflow or Squarespace
  • Fast pages, with SEO and redirects in place at launch
  • Edited by your team, owned by you

This site is one: 570+ pages moved off Squarespace in October 2026.

Custom websites →

Connecting ChatGPT or Claude to your product? See MCP servers.

Discuss your project →
(03) How we work

Five standards you can hold us to.

They’re the reason clients stay for years.

  1. 01

    Software Excellence

    Clean, tested, maintainable code. We get the details right, and we leave a codebase the next engineer can work in.

    “His code is clean and concise.”
    Shannon, repeat client
  2. 02

    Engineering

    We think in systems: the interface, the data, the integrations, and how it all runs after launch. Not just how it looks.

    SelfManager.ai: designed, built and operated in production by Marian.

  3. 03

    Experience

    Building software since 2010 means risks get spotted early and decisions stay practical. You don’t pay for our learning curve.

    Since 2010 · 400+ sites and apps shipped

  4. 04

    Dedication

    We stay responsible through delivery and after it. Many clients keep working with us for years.

    “I had the pleasure of working with Marian again after six years, and I couldn’t be more pleased with the experience.”
    Michael, ONE65 San Francisco
  5. 05

    Professionalism

    Clear scope, honest advice, reliable communication and a documented handover. If something is a bad idea, we say so before you pay for it.

    “I got constant updates, smart suggestions, and honest professional feedback.”
    Jacob, web app client
(04) Client feedback

A 4.9 out of 5 average client rating.

“”
"I can't recommend Marian enough. He stepped in to handle a complex, custom Squarespace project that two other coders couldn't complete—and he handled it with ease."
N Nate - Agency owner
  • ★★★★★

    "Amazing, fast, reliable! I'm a shopify brand owner and I've worked with ABZ Global/Marian for many years. … That's why I've kept them on retainer for years. They're consistent, reliable, and it allows me to focus on other parts of the business."

    J
    Jeb
    Founder and CEO, Shot of Joy
  • ★★★★★

    "Marian was fantastic during the entire project. I felt very comfortable with our relationship, his understanding of Shopify made the project seamless."

    R
    Royal Labs
    Shopify build, 2026
  • ★★★★★

    "I'm very satisfied with the work delivered! Communication was clear and efficient, the integration between SmartBill, Make, and Shopify was completed successfully and everything works smoothly. He handled all technical details and guided me through the process in a professional and friendly manner."

    G
    Geanina
    Ecommerce client
  • ★★★★★

    "We needed a Shopify theme repurposed, and Marian did a fantastic job. The work was completed efficiently, with great attention to detail, and exactly as we envisioned. Communication was smooth throughout the project; he was always responsive, clear, and very pleasant to work with."

    T
    Tasha
    Shopify client
  • ★★★★★

    "I am delighted to share my exceptional experience working with Marian, a highly skilled web developer who recently tackled the task of fixing our Squarespace website. With his unwavering commitment to delivering on every promise and fulfilling our project brief to perfection, Marian has proven invaluable."

    Read the full letter →
    S
    Sam
    Founder and CEO, BLAK
5 of 32 reviews Click the arrows to browse →
(05) The person behind it

“If I contribute to the success of my clients, I feel successful.”

Every project has the founder on it: not as a sales overlay, but doing the engineering.

Marian Sorca, founder of abZ Global

Marian Sorca, founder.

Software engineer · building software since 2010

That line is how I’ve worked from the start. It means I begin with your business goal, not with a technology I’d like to use. I recommend the scope that makes sense for where you are, and I tell you when something is a bad idea before you pay for it.

And I stay accountable after launch, which is why many clients have worked with me for years. abZ Global is the studio built around that standard.

When a project needs more hands, I lead the team, with one person responsible: me.

  • Building software since 2010
  • Working with US businesses since 2014
  • Fractional CTO & lead developer for BLAK International, private aviation, 2022 to April 2026
  • Fractional CTO & lead developer for Spare Space, a US marketplace
  • Founder of SelfManager.ai
  • Microsoft Certified Professional
  • Works in English, German, Romanian & Croatian
Start a project

Have a project in mind?

Tell us what you’re building and where it’s stuck. Within 24 hours you get useful questions and a proposed next step, or an honest answer if we’re not the right fit.

  1. 01Tell us about it.A few lines on the goal, the deadline and what exists today.
  2. 02A reply within 24 hours.Useful questions and a proposed next step, in writing.
  3. 03Scope and price agreed before work starts.Projects from $2,000. Ongoing fractional CTO work is billed monthly.
Response time
Within 24 hours, 7 days a week