Amazon + Walmart Multi-Store Stock Sync
8 stores, 14,000 SKUs, 4 warehouses. Stock drift caused over-sales. Central portal + AI-forecasted stock alerts across Amazon SP-API, Walmart Marketplace and Shopify.
ERP, B2B/B2C portals, SOC 2 / HIPAA-compliant builds, Stripe and Plaid integrations, industry-specific software on AWS/Azure. Our 12-year team builds with the latest tech, automates manual work and cuts headcount needs. Fixed price, 12-month warranty, ADA-accessible by default.

Technologies & Integrations We Work With
What We Build
One budget, one team — instead of juggling 12 freelancers. Frontend, backend, mobile, devops, AI — all under our roof, delivered from New York and Austin.
Inventory, orders, production, finance, CRM, B2B ordering portal. Two-way integration with QuickBooks Online, NetSuite, Sage Intacct and Microsoft Dynamics 365. Sales tax automation via Avalara/TaxJar (Wayfair nexus rules). Role-based access, multi-location setup, multi-currency accounting.
Amazon SP-API, Walmart Marketplace API, Shopify, eBay, Etsy, Target Plus, TikTok Shop. Sync product, stock and price from a single panel. Order automation, carrier integration (UPS, FedEx, USPS, DHL Express, OnTrac), returns management, 3PL/FBA workflows.
One codebase, two platforms with React Native. App Store + Google Play publishing included. Push notifications, offline mode, biometric login, in-app payments (Stripe, Apple Pay, Google Pay). Built to ADA/WCAG 2.2 AA accessibility from day one.
Stripe subscriptions, Connect marketplaces and usage-based billing. Plaid bank account linking, ACH transfers, balance and identity verification. Affirm/Klarna BNPL, PCI DSS-aware architecture, fraud screening with Stripe Radar. We ship payment flows that pass real audits.
SOC 2 Type II-ready architecture: audit logging, encryption at rest and in transit, least-privilege access, vendor-risk documentation. HIPAA builds with BAA, PHI encryption, and HL7/FHIR integration for healthcare data. CCPA/CPRA-compliant data handling — consent, deletion and do-not-sell flows built in.
Healthcare (EHR/FHIR integration, patient portals), fintech (lending, ACH), logistics (TMS/WMS), legal (case management), restaurants (POS + QR menu), real estate (CRM + MLS/IDX feeds), construction (job costing). A team fluent in your industry.
Real Results
One portal + one operator replaced 5 people doing manual work. Here are a few examples.
8 stores, 14,000 SKUs, 4 warehouses. Stock drift caused over-sales. Central portal + AI-forecasted stock alerts across Amazon SP-API, Walmart Marketplace and Shopify.
1,200 daily shipments tracked manually in Excel; moved to a QR-barcode mobile + desktop portal with UPS, FedEx and USPS APIs. Branch-to-HQ sync in real time.
Appointments, patient records, panoramic X-ray viewer, e-prescribing across 6 locations. iOS/Android patient app included. HIPAA-compliant with BAA — PHI encrypted at rest, full audit trail.
Loan applications required manual bank statement reviews. Plaid bank linking + automated underwriting data + Stripe ACH disbursements and repayments, with a full audit log.
12-location restaurant chain. Waitstaff reduced by 40% — customers order via QR and pay with Apple Pay/Stripe, the kitchen screen updates automatically.
180 trade customers placed orders by phone and email. A B2B portal + two-way NetSuite integration automated order → invoice → dispatch, with Avalara sales tax per state.
How We Work
No months of agile waffling. Fixed price, fixed timeline, weekly demos. No surprise invoices or disappearing PMs.
We discuss your processes (60-90 min). We map current software, problems, goals. Within 3 business days you receive a fixed-price, module-by-module quote and timeline. No commitment.
Wireframes + clickable prototype in Figma. We walk through the screens together and you sign off on the final version. Data model, integration map and API spec are documented.
Frontend + backend + mobile in parallel. Cursor + Claude/GPT-4 delivers 40% faster code. Weekly live demos + screencasts. GitHub access open to you — you can see the code yourself.
QuickBooks/NetSuite, Stripe/Plaid, Amazon SP-API/Walmart/Shopify, carrier APIs, Avalara sales tax — all integrated. We test together in a UAT environment, including an ADA/WCAG accessibility pass. Bug list closed within 48 hours.
2-3 live training sessions for your team (recorded). AWS/Azure deployment, SSL, backups, monitoring set up. Soft launch — pilot users live for 1 week. Then full handover.
12 months of free bug-fix warranty. Then an optional maintenance plan (hourly or monthly package). 24/7 monitoring — 99.9% uptime SLA. New feature requests added via monthly sprints.
Marketplaces locais, transportadoras, métodos de pagamento e conformidade — de um único painel
Um ev tekstili markası em Austin
"LLC kuruluşundan 4 ay sonra Amazon.com ve Walmart'ta aylık 5.000+ siparişe ulaştı"
Custom Quote
No off-the-shelf price tags. We listen to your needs, scope the modules, and deliver a fixed-price + fixed-timeline quote within 3 business days. The call is free, no commitment.
Whatever the scope, the following are standard — no extra charge.
Bring these and we will produce an accurate quote in 60 minutes.
We work on a fixed price + fixed timeline. The delivery date is in the contract; if we are late, we pay a 3% weekly penalty (capped at 20%). We can do this because we define scope tightly up front, prevent scope creep, and use AI-assisted coding to keep on plan. 23 of our last 24 projects were delivered on time or early (reference list shared on the discovery call).
**The code is 100% yours.** The GitHub repo is handed over at no extra charge. You can continue with any other software firm or hire developers in-house. Vendor lock-in is not our model — we keep clients with quality, not with contracts.
Yes. For SOC 2 we deliver Type II-ready architecture: centralized audit logging, encryption at rest (AES-256) and in transit (TLS 1.2+), least-privilege IAM, environment separation, and the technical evidence your auditor will ask for. For HIPAA we sign a BAA, encrypt PHI, implement access controls and audit trails, and integrate via HL7/FHIR where needed. We prepare the technical controls; your compliance team or auditor runs the certification itself.
The opposite. Our senior developer working with Cursor + Claude/GPT-4 ships ~40% faster and with 25% fewer bugs than a solo developer (our own measurements). AI writes code, but architecture, code review and tests are run by our 12-year team. Result: same quality, faster, cheaper.
Both are built in, not bolted on. CCPA/CPRA: consent management, "Do Not Sell or Share" flows, data-deletion and access-request endpoints, and a data inventory you can hand to counsel. Accessibility: every screen passes an ADA/WCAG 2.2 AA check — semantic markup, keyboard navigation, contrast, screen-reader labels — which also protects you from the ADA demand-letter wave targeting US websites.
**Marketplaces:** Amazon SP-API (US/CA/MX), Walmart Marketplace, Shopify, eBay, Etsy, Target Plus, TikTok Shop, Newegg. **ERP/Accounting:** QuickBooks Online, NetSuite, Sage Intacct, Microsoft Dynamics 365, SAP, Oracle. **Sales tax:** Avalara, TaxJar. **Payments/Fintech:** Stripe (subscriptions, Connect), Plaid, PayPal, Apple Pay, Google Pay, Affirm, ACH/Nacha. **Carriers:** UPS, FedEx, USPS, DHL Express, OnTrac, ShipStation. If a system you need is not listed but has a REST/SOAP API, we can integrate it.
No — the code is yours and you run it. During the 12-month free warranty every bug is on us. After 12 months: (1) keep going with your own developer, (2) sign a monthly maintenance plan with us (packages: 8 hours/month $780 — 40 hours/month $3,600), (3) buy hourly support ($145/hr). No contract required.
If you have field staff (drivers, store managers, site engineers, clinicians), mobile is essential — for push notifications, offline mode, camera (QR/barcode/photo). For desktop-only teams a Progressive Web App (PWA) is enough — faster and cheaper. On the discovery call we recommend what fits your scenario; if you do not need mobile, we will say so.