Monolith fatigue
Magento and Salesforce Commerce Cloud monoliths slow releases to a crawl. We carve out hot paths and move to composable.
GDPR PCI DSS AI-native
Ecommerce Development Services for D2C, B2B and Marketplace Operators
YuSMP Group builds revenue-grade storefronts, B2B portals and multi-vendor marketplaces on Shopify Plus, Adobe Commerce, commercetools and custom headless stacks. Our MACH-aligned teams ship Core Web Vitals-passing experiences with PCI DSS-capable checkout flows, GDPR-aligned data handling and SOC 2 Type II controls in progress — engineered for US and EU retail teams that need conversion, scale and audit-ready compliance from day one.
We deliver end-to-end ecommerce engineering across D2C storefronts, B2B and B2B2C portals, multi-vendor marketplaces and large-scale replatforming programs. Our engineers work natively in Shopify Plus, Adobe Commerce (Magento), commercetools, BigCommerce and custom headless builds on Next.js, Remix and Hydrogen — connected to ERP, PIM, OMS, CRM and tax engines through API-first integration. With 80+ senior engineers in Yerevan, CET hours overlapping US East Coast 9 AM–1 PM, and 120+ delivered projects at NPS 71, we run discovery, build, replatform, optimize and support as one accountable team. Explore how we deliver this through our Shopify Plus development service.
Challenges
Industry challenges we solve
Cookie sunset
Third-party cookies are gone. Personalization needs first-party data pipelines and consented identity, or it breaks.
Multi-jurisdiction tax
VAT/OSS/IOSS (EU) + state sales tax, economic nexus, Marketplace Facilitator (US Wayfair-era rules) pile up. We integrate calculation engines (Avalara, TaxJar, Vertex) and reconcile cleanly across both regions.
Omnichannel gaps
Online, store, app and partner channels see different stock and prices. Unified inventory and pricing fix the customer trust issue.
Search relevance
Conversion lives in search and merchandising. We deploy vector and lexical hybrid search and tune for revenue, not recall.
Peak readiness
Black Friday breaks fragile checkout flows. We harden with chaos drills, autoscaling and queue-based order intake.
Solutions
Solutions we build
Headless commerce
Composable stacks with commerce, CMS, search, CDP and PIM behind a unified storefront.
Marketplaces
Multi-vendor platforms with onboarding, KYC, payouts and DSA-aligned trust and safety.
Omnichannel retail
OMS, click-and-collect, store fulfilment and unified inventory across channels.
B2B commerce
Account hierarchies, contract pricing, quotes, approvals and punch-out integrations.
Subscription and DTC
Recurring billing, dunning, customer portals and growth analytics for direct-to-consumer brands.
AI merchandising
Personalization, generative product copy and visual search tuned for US & EU first-party data.
Stack
Technology stack
TypeScript, React, Next.js, Node.js, commercetools, Shopify, Magento, BigCommerce, Algolia, Elasticsearch, Stripe, Adyen, PostgreSQL, GraphQL, Kafka, Kubernetes, AWS, Vercel.
Compliance
Compliance & regulations
GDPR-aligned · ISO 27001 ready · SOC 2 Type II in progress · HIPAA-capable · CCPA-acknowledged
- GDPR & ePrivacy (EU) + CCPA/CPRA (US) — consent, server-side tagging, DSR/right-to-know/opt-out automation.
- PCI DSS v4.0 — checkout scope reduction, tokenization (shared).
- eIDAS 2 — EU digital identity wallet readiness · US: NIST SP 800-63 + ID.me integration patterns.
- EU consumer law — Omnibus Directive, price reduction transparency · US: FTC Section 5 + state UDAP statutes.
- VAT/OSS/IOSS (EU) + state sales tax, nexus, Marketplace Facilitator (US) — multi-jurisdiction tax and invoicing.
- Digital Services Act (EU) — marketplace trader transparency and moderation.
On an ecommerce platform these are vertical challenges — checkout scope, consent-driven personalization, multi-jurisdiction tax. For the deep implementation how-to we point you to the dedicated service pages: PCI DSS compliant software development, GDPR compliance consulting and SOC 2 readiness.
Integrations
The commerce integration landscape we build against
A storefront is only as good as the systems behind it. We connect the commerce engine to the payment, tax, catalog, fulfilment and channel systems retail teams actually run, through API-first integration on custom software and web platform builds.
Payments & wallets
Stripe, Adyen, PayPal/Braintree and local acquirers, plus Apple Pay and Google Pay — tokenized so PCI DSS scope stays with the processor.
Tax & invoicing
Avalara, TaxJar and Vertex for US state sales tax and economic nexus, plus EU VAT/OSS/IOSS calculation and per-country invoicing.
ERP, OMS & fulfilment
SAP, Microsoft Dynamics, NetSuite and 1C via middleware; order management, WMS and carrier integrations for unified stock and shipping.
PIM, CMS & DAM
Akeneo, inRiver and headless CMS behind the storefront, so one product-information backbone feeds every channel and locale.
Search, CDP & personalization
Algolia and Elasticsearch for hybrid search and merchandising; consented first-party CDP pipelines with server-side tagging after the cookie sunset.
Marketplace & channel connectors
Amazon, eBay and Walmart listing and order sync, plus seller onboarding, KYC and payouts for DSA-aligned multi-vendor platforms.
Process
Our ecommerce engineering process
We run discovery, build, replatform, optimize and support as one accountable team — with conversion and Core Web Vitals deltas on every release, not just velocity.
1 · Discovery & architecture
We map catalog shape, traffic peaks and the ERP/PIM/tax landscape, then choose platform vs headless and define the composable target architecture.
2 · Phased replatform
Monoliths are carved along hot paths and migrated incrementally, keeping revenue stable — no big-bang cutover.
3 · Build & integrate
Storefront, checkout and back-office ship on custom builds with PCI-scoped payments, tax engines and OMS wired in through API-first integration.
4 · Peak readiness
Before Black Friday we run chaos drills, autoscaling and queue-based order intake on cloud & DevOps so peak day is boring on purpose.
5 · Optimize & support
Post-launch we tune search, merchandising and conversion against first-party data, with SLA-backed support and continuous Core Web Vitals monitoring.
Cases
Selected E-commerce case studies
Automotive · E-commerce
AutoParts
Laravel + React auto-parts storefront with real-time 1C ERP inventory sync — fitment search, card payments, personal account, US & EU launch.
Retail · E-commerce
Malish
Local marketplace mobile app for an offline children's-goods chain — flexible catalog, two-tap checkout, online/offline stock sync.
Retail · Fashion
SuperStep
Retail POS companion app for a multi-brand boutique chain — ElasticSearch cross-store inventory search, 1C-system integration.
Why YuSMP
Why retail teams choose YuSMP
Composable mindset
We don't lock you into one platform. We compose what fits your catalog and traffic shape.
Conversion-led delivery
Every release ships with conversion and Core Web Vitals deltas, not just velocity charts.
Peak-tested ops
We rehearse Black Friday with chaos drills so your real one is boring on purpose.
What clients say
Retail apps need to be fast and fault-tolerant with real-time inventory sync to offline stores. YuSMP built native Swift and Kotlin apps with ElasticSearch search, 1C ERP integration, and a two-tap checkout our customers genuinely love.
B2B commerce for a polymer products brand means complex product configurators, dealer pricing tiers, and order workflows that non-technical buyers must navigate. YuSMP built a platform our dealers adopted without a single training session. Order volumes through the portal doubled in year one.
FAQ
E-commerce FAQ
Do you migrate stores to headless architecture?
Yes. We split monolithic storefronts into composable commerce: a commerce engine, CMS, search and CDP behind a unified storefront, with phased migration to keep revenue stable.
How do you handle EU VAT and OSS?
We integrate VAT calculation services, support OSS and IOSS schemes, and reconcile invoices per country with proper tax codes and B2B reverse charge.
How do you handle US state sales tax, economic nexus, and Marketplace Facilitator Acts?
We integrate Avalara, TaxJar or Vertex for US state sales tax, track post-Wayfair economic nexus thresholds per state, and implement Marketplace Facilitator Act collection-and-remittance flows so the platform collects on behalf of third-party sellers.
Are you GDPR + CCPA ready for marketing and personalization?
We implement consent management, server-side tagging, first-party data pipelines and DSR/right-to-know/opt-out automation so personalization stays GDPR-aligned (EU) and CCPA-acknowledged (US) after the cookie sunset.
Can you build B2B and B2C in one platform?
Yes. We model account hierarchies, contract pricing, quotes and approvals on top of standard B2C catalogs, with a shared product information backbone.
What about marketplaces and EU DSA obligations?
We build seller onboarding, KYC, content moderation and trader transparency aligned with the Digital Services Act and Omnibus Directive.
From the blog
In-depth guides on building and scaling online stores — sales tax, payments and platform choices.
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