Challenge
Inventory drifts between store and web.
Agnotic approach
Event-driven sync with a single source of truth and reservation logic keeps stock consistent.
Retail Software
Custom Retail Software Development
We design and build custom software for retail (POS, inventory, and store operations integrated with eCommerce and ERP) so stock, sales, and customers stay in sync across every channel instead of drifting apart.
EMV / PCI DSSOmnichannelREST & WebhooksGS1
Trusted by global innovators
What is custom retail software development?
Custom retail software development is building the POS, inventory, order management and customer apps that fit how your stores and channels actually run. Agnotic Technologies builds retail software for retailers and brands, integrated with eCommerce, ERP, payments and CRM, with PCI DSS scope and offline registers planned from the first sprint.
Retail runs on many systems: POS, eCommerce, inventory or ERP, payments and CRM. Inventory races between channels, registers go offline and each platform models orders differently.
We build an event-driven backbone, one order and product model, and reconciliation for the edge cases retail always produces.
How do retail systems stay in sync?
See how we design retail software: a canonical product/order model, event-driven sync across channels, and payment reconciliation.
Common failure modes
Where does retail software break?
Challenge
Registers go offline and sync late.
Agnotic approach
Offline-tolerant queuing and idempotent replay so transactions reconcile without double-counting.
Challenge
Each system models orders differently.
Agnotic approach
A canonical order and product model that every platform maps to.
Challenge
Payments and sales don't reconcile.
Agnotic approach
Automated reconciliation between POS, processor, and finance with an exception queue.
What do we build for retailers?
The application surface we build for retail operations.
POS & checkout
Custom point-of-sale and checkout tuned to your store formats and flows.
Omnichannel sync
Real-time product, price, order, and stock sync across store, web, and marketplaces.
Inventory & operations
Inventory, replenishment, and store-operations apps on a shared data model.
Payments & reconciliation
EMV/PCI-aware payments with automated settlement reconciliation.
Where it runs
Where does custom retail software run?
Omnichannel inventory
One live stock picture across store, web, and marketplaces.
Order orchestration
BOPIS, ship-from-store, and endless-aisle flows.
Custom POS
Checkout tuned to your store formats and hardware.
Store operations
Apps for tasks, replenishment, and associate workflows.
Customer & loyalty
Unified profiles and loyalty across channels.
Retail reporting
Consolidated sales and inventory reporting across stores.
Why does real-time sync matter in retail?
Retail projects break on inventory races and offline sync, not a single API. We build for real-time consistency.
Real-time
Cross-channel sync
Event-driven
Orders and stock updated as they change
Offline-tolerant
Registers keep working
Standards we build against
Retail software standards
EMVPCI DSSOAuth 2.0WebhooksGS1REST / JSON
Our Process
How do we deliver retail software?
Channel mapping, real-time sync, and reconciliation treated as the real work.
1.
Discovery & system map
We map your POS, eCommerce, inventory, payments, and CRM and set the source of truth.
Channel-mapped
2.
Model & sync design
A canonical product/order model with event-driven sync across channels.
Event-driven
3.
Build & test
Validated against real edge cases: offline registers, returns, and concurrent sales.
Edge-tested
4.
Rollout & support
Phased rollout across stores with reconciliation dashboards and support.
Supported
Facts and sources
Which standards shape retail software?
Short facts we design around, each linked to its primary source.
PCI DSS applies to entities that store, process or transmit cardholder data or sensitive authentication data.
Source: PCI Security Standards CouncilPCI SSC qualifies and trains Approved Scanning Vendors (ASVs) to run the external vulnerability scans that the applicable PCI DSS requirement calls for.
Source: PCI Security Standards CouncilThe OAuth 2.0 authorization framework (RFC 6749) lets a third-party application obtain limited access to an HTTP service without sharing the user's password.
Source: IETF RFC 6749
Why Partner With Us
15-Minute Scoping CallWhy do retailers build with Agnotic?
Software that keeps channels in sync and lasts.
Payments-aware
EMV/PCI-conscious payments with reconciliation, so money ties out.
Retail depth
Fluent across POS, eCommerce, and ERP: we know where omnichannel breaks.
Real-time focused
Event-driven sync for near real-time consistency, not batch exports.
Full-stack fluency
From checkout UX to ERP integration, built as one system.
Frequently Asked Questions
Yes. Where possible we keep card data out of your systems with tokenizing payment providers, which narrows PCI DSS scope, and we design the rest of the cardholder data flow to the standard's requirements.
Yes. Most retail engagements start with one workflow, such as inventory sync or a store app, running at one location before rolling out to more stores and channels.
It depends on the systems involved. A focused first release, such as a custom POS or an inventory-sync app, comes first; broader platforms are phased across stores. Integration with eCommerce, ERP and payments drives the timeline more than the app, so we scope from your real stack and give you a timeline after the scoping call.
Cost scales with the systems and channels involved and the number of stores. A two-system integration is modest; a multi-store omnichannel platform is larger. We scope against your operation and share ranges.
Yes. Integration is the core of the work: we build a canonical model and connect POS, eCommerce (Shopify, WooCommerce, headless), inventory/ERP, payments, and CRM so everything stays consistent in near real time.
Yes. We design offline-tolerant registers with queuing and idempotent replay, so transactions reconcile cleanly when connectivity returns without double-counting.
Yes. Where systems aren't connected, we handle that as part of the engagement. See our Retail POS integration services.
AI tools help our engineers draft code and tests, but a person reviews every change, and it passes the same automated tests and security checks as any other code. Which tools may see your code or data is agreed with you at the start.
Ready to build retail software that stays in sync?
Tell us your stores, channels, and systems. We will return a realistic, integrated retail software plan.
contact@agnotic.com
Partnerships
contact@agnotic.com