01
InventorySynchronizationQueue-driven
Multi-channel Inventory Synchronization
A central stock service that projects availability to every sales channel, with reservations, adjustments and cursor-based incremental sync keeping counts consistent.
Commerce Technology & Integration
Build Reliable Commerce Infrastructure
We build scalable commerce systems — products, orders, inventory and pricing — and connect them to the ERP, OMS, WMS, logistics, payment and marketplace systems your business runs on, through reliable APIs and automation.
commerce-core· api gatewayoperational
requests
- POST/v1/orders20024 ms
- GET/v1/products/881720012 ms
- POST/v1/webhooks/orders20231 ms
- GET/v1/inventory?sku=10422009 ms
synchronization
- inventory.syncchannel feedssynced
- orders.pushfulfillmentsynced
- pricing.updatecatalogrunning
queue order-eventsbacklog 0 · consumers 4
System overview — illustrative interface
Capabilities
Engineering built for commerce operations
A commerce backend is only useful if it stays consistent with everything connected to it. Our work covers the core commerce domains and the integration discipline around them.
Commerce Backend
The core domain systems that keep catalog, orders, stock and prices consistent.
Product & SKU management
SPU/SKU modeling, variants, categories, attributes and media.
Order management
Order lifecycle, payment status, fulfillment, cancellation and refunds.
Inventory management
Multi-channel inventory, synchronization, reservation and adjustments.
Pricing & promotions
Price management, promotion rules and discount calculation.
Integration
Connecting commerce systems with the external platforms and services they depend on.
RESTful API engineering
Designing, consuming and versioning APIs on both sides of an integration.
Webhooks & OAuth
Inbound and outbound webhooks, OAuth flows and token lifecycle handling.
ERP / OMS / WMS integration
Data mapping and synchronization with upstream business systems.
Logistics, payment & platform APIs
Marketplace, carrier and payment-gateway integrations with retry and reconciliation.
Infrastructure
The runtime foundation that keeps services observable and deployable.
Containerized deployment
Services packaged and run in containers.
CI/CD & automated delivery
Automated build, test and deployment pipelines.
Data & messaging backbone
Relational databases, caching, message queues and search.
Monitoring & logging
Structured logging, metrics and alerting on system health.
System Architecture
One connected commerce platform
Our platform is organized into clear layers — from external channels through a governed API gateway, into the commerce core, and out to the systems it synchronizes with. Each layer has a single responsibility and a defined contract.
01
External Channels
Marketplaces, storefronts and partner systems that read and write commerce data.
02
API Gateway
Single entry point for inbound traffic — authentication, rate limiting and request validation.
03
Integration Layer
Connectors, data mapping, webhook processing and the synchronization engine that translate between external formats and domain models.
04
Commerce Core
Domain services for product, order, inventory and pricing — the system of record for commerce data.
05
Event & Queue
Asynchronous events decouple services, absorb load spikes and make processing recoverable.
06
Connected Systems
ERP, OMS, WMS, logistics and payment systems synchronized through APIs and webhooks.
07
Data Layer
Relational database as the source of truth, backed by cache and search.
08
Infrastructure
Containerized deployment, CI/CD pipelines, monitoring and structured logging.
API Integration
Serious about API engineering
Integration is an engineering discipline, not an afterthought. Every external call passes through a pipeline designed for authentication, validation, mapping, queueing and recovery.
External API
inbound / outbound
Authentication
OAuth · tokens
Validation
schema & rules
Data Mapping
transform
Queue
async buffer
Commerce Core
domain logic
Database
system of record
Webhook
callback · notify
Webhooks
Inbound events are verified, deduplicated and queued; outbound callbacks are signed and retried until acknowledged.
OAuth & token lifecycle
Authorization codes, token refresh and credential rotation are handled automatically, never hard-coded.
Rate-limit handling
Client-side throttling respects each provider's quota, with backoff instead of hammering the endpoint.
Retry & backoff
Transient failures are retried with exponential backoff; persistent failures go to a dead-letter path for review.
Idempotency
Retried operations are keyed so the same request never applies twice — critical for orders and stock.
Incremental synchronization
Cursor-based sync picks up exactly what changed, keeping large datasets consistent without full reloads.
Commerce Modules
The backend your operations run on
Product, order, inventory and pricing are modeled as first-class domains — each with its own lifecycle, events and synchronization contracts.
Product
A product model built for real catalogs: SPU/SKU separation, variants, attributes and media — structured so external channels can map to it cleanly.
- Products & variants
- SKU management
- Attributes & categories
- Media library
- Channel-ready data model
Illustrative UI
categories
- Apparel
- T-Shirts
- Hoodies
- Accessories
- 6 variantsactive
Core Tee
TSHIRT-BLK-M
- 6 variantsactive
Core Tee
TSHIRT-WHT-L
- 8 variantsdraft
Heavy Hoodie
HOOD-GRY-XL
variants — Core Tee
| variant | stock | price |
|---|---|---|
| Black / M | 128 | 24.00 |
| Black / L | 96 | 24.00 |
| White / M | 64 | 24.00 |
| White / L | out | 24.00 |
Automation
Order workflows that run themselves
From order creation to external synchronization, each step is automated, observable and recoverable. When something fails, the system retries or routes it for review — it does not silently drop it.
- 01
Order Created
- 02
Validate
- 03
Reserve Inventory
- 04
Create Fulfillment
- 05
Sync External System
- 06
Receive Webhook
- 07
Update Order
- 08
Notify
Event-driven processing
Domain events trigger the next step, so services stay decoupled and testable.
Scheduled tasks
Reconciliation jobs, catalog refreshes and sync sweeps run on a schedule.
Retry & error recovery
Failed steps are retried with backoff or parked for review — nothing is lost.
Automatic synchronization
Changed data propagates to connected systems without manual intervention.
Monitoring & alerting
Pipeline health is measured end-to-end; anomalies surface before customers notice.
Audit trail
Every automated action is logged with what ran, when, and on which data.
Reliability
Designed for failure, built for consistency
Distributed integration means things fail — networks time out, limits get hit, requests repeat. Our systems are engineered around that reality rather than around the happy path.
- Idempotent API operations
- Retry with exponential backoff
- Queue-based processing
- Failure recovery & dead-letter handling
- Request validation at every boundary
- Rate-limit aware clients
- Structured logging
- Monitoring & alerting
- Audit logs
- Data consistency checks
- Secure authentication
Security
Security by design
Commerce data is sensitive. Security controls are built into the platform's boundaries — identity, transport, validation and audit — not bolted on afterwards.
- HTTPS for all traffic
- Secure authentication (OAuth & token-based)
- Role-based access control
- Input validation at every boundary
- API signature verification
- Webhook signature verification
- Encryption in transit
- Audit logging
- Least-privilege access
Technology Stack
A pragmatic, proven stack
Boring where it should be boring, modern where it pays off — chosen for reliability, operability and long-term maintainability.
01Application
- Commerce console
- API services
- Integration jobs
02Services
- Go services
- Domain modules
- Async workers
03Integration
- REST APIs
- Webhooks
- OAuth 2.0
- Message queue
04Data
- Relational database
- Cache
- Search engine
05Infrastructure
- Docker
- CI/CD
- Monitoring
- Structured logging
Technology selections are reviewed continuously; detailed specifications are shared during technical discussions.
Engineering Approach
How we build
Five principles that shape every system we design, and every integration we deliver.
- API First
- Stable, explicit contracts come before implementation. If an interface is unclear, the design is not finished.
- Event Driven
- Complex commerce flows are modeled as events and asynchronous tasks, not long-running blocking calls.
- Integration Ready
- External systems differ; our data mapping and synchronization layers make those differences manageable.
- Failure Resilient
- Network faults, rate limits, duplicate requests and partial failures are handled by design.
- Observable
- Logs, metrics and audit trails make system state visible — we can answer what happened and why.
Engineering Work
What we build
Representative engineering projects from our platform work — described at the system level.
02
OrdersEvent-drivenIdempotency
Order Processing Pipeline
A queue-driven order lifecycle — validation, inventory reservation, fulfillment and status callbacks — designed around idempotent operations and recoverable failures.
03
ProductSKUPricing
Product & Pricing Platform
SPU/SKU modeling with variants, attributes and categories, plus rule-based promotions evaluated consistently across channels.
04
IntegrationWebhooksOAuth
Integration Framework
Standardized connectors for ERP, OMS, WMS, logistics and payment systems — with data mapping, webhook processing, retries and monitoring shared across every integration.
Detailed case studies are available on request. Explore our technology →
Let's talk about your commerce systems
Whether you are replatforming, connecting external systems, or building commerce operations from scratch — we are glad to discuss how the pieces should fit together.