We've just launched EmbedFAQ on the Shopify App Store

EXTFOX Logo
© 2026 EXTFOX
PrivacyTerms

Solutions

Software development
that drives results

EXTFOX builds high-performing Shopify stores, SaaS platforms, intelligent AI systems, and ecommerce optimization that drive real business results.

Three cores: Shopify Plus development and CRO, AI systems including RAG and voice agents, and product development from MVP to SaaS.

Shopify development

Transform your Shopify Plus store with advanced customization, checkout extensions, and performance optimization. We help DTC brands maximize conversion rates and average order value through expert development.

  • Shopify Plus storefronts

    From your Figma design to a live, advanced PDP, with Recharge subscriptions, Stay.ai reviews, and custom theme extensions built in.

    Learn more

  • Shopify CRO

    Research, UX, A/B testing, and Shopify development in one senior team. More revenue from the traffic you already have.

    Learn more

  • Checkout & extensions

    Customize checkout with Shopify Functions and UI Extensions to increase conversion and average order value. Native solutions that outperform private apps.

    Learn more

  • Headless storefronts

    Before building headless, we ask: 'Why not Shopify 2.0?' If headless wins, we architect and deliver quickly without disrupting your existing Shopify operations.

    Learn more

  • Agentic integrations

    ERP, OMS, and data sync across your stack, plus agentic workflows and MCP-connected integrations that automate operations around Shopify.

    Learn more

AI & automation

Leverage cutting-edge AI technology to automate workflows, enhance decision-making, and create intelligent systems that scale with your business. From RAG systems to autonomous agents, we build AI solutions that drive real results.

  • AI Chatbots & assistants

    Intelligent conversational AI that understands context, provides accurate responses, and enhances customer experience across all touchpoints.

  • RAG system & intelligent search

    Retrieval-Augmented Generation systems for intelligent content creation, knowledge management, and AI-powered search capabilities that understand context and deliver accurate results.

  • AI voice agents

    We integrate HIPAA-compliant voice agents for healthcare, real estate virtual assistants, customer service automation, and industry-specific AI voice solutions. Custom voice agents that understand context, handle sensitive data securely, and integrate with your CRM, business systems.

  • AI integrations

    Seamlessly integrate AI capabilities into your existing systems, workflows, and platforms to enhance functionality and automate processes.

Product development

Build scalable software products from concept to launch. We specialize in creating enterprise-grade SaaS platforms, web applications, and mobile solutions that grow with your business.

  • MVP development

    Rapid MVP development to validate your product idea, test market fit, and iterate quickly. Get to market faster with a solid foundation for growth.

  • Full-stack web applications

    Custom web applications built with modern technologies for scalability, performance, and exceptional user experiences. From frontend to backend, we deliver complete solutions.

  • SaaS platforms

    Custom SaaS platforms from MVP to enterprise scale. Build scalable, intelligent software solutions with subscription management, multi-tenancy, and advanced features that drive real business results.

Dusan Jovanovski, Founder at EXTFOX

Let's meet

Dusan J. Founder @ EXTFOX.com | Custom Shopify Plus development, AI commerce systems, and product MVPs for DTC brands

Tell us about your project

Pick a time that works for you. You'll get instant confirmation and a calendar invite.

Prefer to call? (862) 259-6969

Not ready to book?

FAQ

EXTFOX offers software development across three areas: Shopify development (Plus storefronts, CRO, checkout extensions, headless commerce, agentic integrations), AI & automation (chatbots, RAG systems, voice agents, integrations), and product development (MVPs, full-stack apps, SaaS platforms).
We provide Shopify Plus storefronts, Shopify CRO with research and A/B testing, checkout extensions using Shopify Functions and UI Extensions, headless commerce when it fits, and agentic integrations around ERP and OMS. Checkout extensions help increase conversion and average order value through native solutions that outperform private apps.
RAG (Retrieval-Augmented Generation) systems combine information retrieval with AI generation to provide intelligent, context-aware responses. They're ideal for knowledge management, intelligent search, content creation, and customer support. RAG systems understand your business context and deliver accurate, relevant information from your data sources.
We build SaaS platforms from MVP to enterprise scale with subscription management, multi-tenancy, advanced features, and scalable architecture. Our approach includes rapid MVP development for market validation, full-stack development with modern technologies, cloud infrastructure setup, and ongoing optimization.
AI automation streamlines operations, reduces manual work, and improves efficiency. We build AI chatbots and assistants for customer support, workflow automation systems, intelligent decision-making tools, and custom AI integrations.
We start with your product idea and market fit, then build a minimal viable product with core features to test with users. This helps validate the concept quickly and iterate before full-scale development. MVPs typically launch in 4-8 weeks depending on complexity.
Shopify checkout extensions (Functions and UI Extensions) are native solutions that run within Shopify's infrastructure, providing better performance, security, and reliability than private apps. They have no API rate limits, can modify checkout UI directly, require minimal maintenance, and inherit Shopify's security.
Timeline depends on scope. MVPs typically take 4-8 weeks, full SaaS platforms can take 3-6 months, checkout extensions take 2-3 days, and AI systems vary based on requirements. We provide detailed timelines during discovery.
Yes. We work with DTC brands, enterprise companies, and funded startups. Clients include Clean Skin Club, Smilepen, The Honest Kitchen, Biorenewal, and SR Bank.