Inventory Management Software Development

Off-the-shelf inventory management systems are built for the average warehouse, the average product catalogue, and the average supply chain. If your inventory operation has specific requirements, multi-location stock management, kitting and assembly, lot and serial tracking, industry-specific compliance, or integration with systems your off-the-shelf vendor doesn't support, you end up working around the tool.
We build custom inventory management software around your specific product catalogue, fulfilment operation, and system integrations, not a generic system you adapt your operation to fit.

See our work
  • Custom inventory management systems built for your specific stock structure and fulfilment operation

  • Multi-location inventory, lot tracking, serial tracking, and kitting/assembly support

  • Integration with your ERP, WMS, e-commerce platform, and supplier systems

  • Full source code ownership, no per-location or per-user SaaS pricing that scales against you

Recent outcomes

B2B food order management · Multi-platform SaaS

Built a multi-platform food order management system with real-time inventory sync across locations.

0% order errors

AI document processing · Receipt and stock data

Deployed AI OCR pipeline to process supplier receipts and automate stock updates, eliminating manual entry.

20,000+ daily transactions

Logistics platform · Shipping and inventory

Built a B2B shipping and inventory platform handling multi-location stock across 70+ countries.

2,000+ shipments in year one
4.9 / 5 on ClutchSee all work

Recognition

Sound familiar?

  • Off-the-shelf system not supporting your product structure, lot tracking, or multi-location requirements?

  • Manual stock reconciliation between systems that should be integrated but aren't?

The short answer

RaftLabs builds custom inventory management software for businesses in the US, UK, and Australia with complex stock structures. We deliver multi-location inventory, lot tracking, kitting, and ERP integration in 8 to 16 weeks at a fixed cost with full source code ownership.

Updated June 2026

Trusted by

Vodafone
Nike
Microsoft
Cisco
T-Mobile
Aldi
Heineken
GE

Software delivery, by the numbers

software products shipped
100+
average time to first production release
12 weeks
rated by clients on Clutch
4.9/5
years delivering software for established businesses
9+

Your inventory operation is specific. Your inventory system should be too.

A distribution centre with 50,000 SKUs across six locations has different inventory management requirements than a pharmaceutical manufacturer tracking lot expiry dates across a regulated supply chain, which has different requirements than an electronics assembler managing components for kitting. Generic inventory systems make trade-offs that may not match your operation.

Custom inventory management software makes no trade-offs, it's built for your product catalogue, your locations, and your compliance requirements.

Capabilities

What we build

Multi-location inventory management

Unified inventory visibility across warehouses, retail locations, 3PL partners, and in-transit stock. Location-specific stock levels, transfer workflows, and allocation rules decide which location fulfils each order. ABC/XYZ analysis slots fast movers in forward pick locations and schedules cycle counts to match. Reorder automation fires a replenishment suggestion or a direct PO when stock crosses its threshold, with safety stock sized to actual demand variability. Cross-location reporting covers committed stock, available-to-promise, and stock in transit.

Lot, serial, and batch tracking

Full forward and backward traceability for lot-tracked and serial-tracked inventory. Lot receipt with supplier lot number capture, FIFO/FEFO stock rotation enforcement, lot expiry date management, and lot-specific quality hold workflow. Serial number tracking from receipt through sale with full chain of custody. Recall management, identify all locations and customer orders containing a specific lot in seconds.

Kitting and assembly management

Bill of materials management for kits and assembled products, with multi-level BOM support for assemblies that consume sub-assemblies. Component stock is committed the moment a kit order lands, so parallel orders cannot over-allocate the same inventory. Assembly work orders generate pick lists, deduct components using FIFO or FEFO rotation, and book the finished good to stock. Zebra and Honeywell handheld scanning verifies each pick before the kit ships. Phantom BOM support lets your e-commerce platform sell kits picked at order time.

Purchase order and receiving

Purchase order creation, supplier confirmation tracking, advance ship notice processing, and goods receipt with variance detection. Three-way match validation (PO, ASN, receipt) with discrepancy workflow for quantity and condition differences. Lot and serial number capture at receipt. Supplier performance tracking: on-time delivery, fill rate, and quality rejection rate.

Stock counting and reconciliation

Cycle count scheduling driven by ABC/XYZ classification: A-class items counted monthly, C-class semi-annually, with count tasks assigned to operators by zone. Count entry runs on Zebra or Honeywell handhelds with barcode or RFID scanning. RFID bulk counting covers entire pallets without item-by-item scans. Blind counts and automatic recount triggers keep results honest, and variances above your tolerance wait in an approval queue. Dead stock identification and full wall-to-wall physical inventory counts are also supported.

Reporting and demand planning

Inventory performance reporting: stock turn by category, days of cover, slow-moving and dead stock identification, and shrinkage analysis. Demand-based reorder point calculation using historical sales velocity and supplier lead time. Replenishment recommendation reporting to support buying decisions. Custom reporting on the specific metrics your operation tracks.

How we work

From scope to shipped

Every project follows the same four phases. Scope is locked and price is fixed before development starts.

  1. Week 1
    01

    Discovery and scope

    We map your inventory workflows: receipt, putaway, picking, packing, despatch, returns, and counting. We identify gaps between current operations and the system you need. You leave week 1 with a written scope document and a fixed-price quote. No development starts without your sign-off.

  2. Weeks 2-3
    02

    Data migration and integration design

    Switching inventory systems requires migrating current stock quantities, product catalogue, supplier records, and historical transaction data. We plan the migration during scoping, what to migrate, how to validate against source records, and how to manage cutover without a gap period. Integration architecture is designed here too, before any build starts.

  3. Weeks 4-12
    03

    Build, integrate, and QA

    Working software at a staging URL by the end of sprint one. Bi-weekly demos. We test against your real product catalogue and operational scenarios before go-live: receiving a multi-lot shipment, processing a sales order that depletes multiple lots, conducting a cycle count with variances, and generating a lot recall report. QA runs in parallel with every sprint.

  4. Weeks 12+
    04

    Launch and post-launch support

    Production deployment with monitoring activated on launch day. 8 weeks of post-launch support included in every project.

Why us

Why teams choose RaftLabs

  1. Senior engineers build what they scope

    The engineers who assess your inventory problem also build the solution. No bait-and-switch, no offshore handoff after the contract is signed. The team you meet in week 1 ships in week 12.

  2. Fixed price before development starts

    We scope the work, calculate the cost, and lock it in writing before any development starts. A scope change is a change request: priced, agreed, or dropped. It never absorbs into the project and appears on the final invoice.

  3. 9 years and 100+ products shipped

    Clients include Vodafone, T-Mobile, Aldi, Nike, Cisco, and Lockheed Martin. Track record across AI, SaaS, mobile, automation, and enterprise platforms across healthcare, fintech, logistics, and hospitality.

  4. Compliance built in from the start

    GDPR, HIPAA, FDA lot traceability, SOC 2 compliance requirements are scoped in week 1, not retrofitted before launch. We have shipped HIPAA-compliant systems for US healthcare clients and GDPR-compliant products for European markets.

Ready to scope your inventory management project?

30 minutes. You walk away with a clear cost, timeline, and team. No commitment.

Process

How we build inventory management systems

Operations workflow design

Before building, we document your current inventory workflows, receipt, putaway, picking, packing, despatch, returns, and counting, and identify the gaps between current operations and the system you need. Inventory software that matches your actual workflows takes less user training and produces cleaner data than software that imposes a generic workflow.

Data migration planning

Switching inventory systems requires migrating current stock quantities, product catalogue, supplier records, and historical transaction data. We plan the data migration during scoping, what to migrate, how to validate migrated data against source records, and how to manage the cutover so your operation doesn't have a gap period. Data migration is often where inventory system implementations fail.

Integration with your ecosystem

Inventory management lives at the intersection of purchasing, warehousing, sales, and finance. We integrate the inventory system with your ERP for financial posting, your e-commerce platform for order management, your WMS for warehouse operations, and your supplier systems for EDI or API-based purchase order and shipment data exchange.

Testing against real data and scenarios

We test the inventory system against your real product catalogue and operational scenarios before go-live: receiving a multi-lot shipment, processing a sales order that depletes multiple lots, conducting a cycle count with variances, and generating a lot recall report. Testing against edge cases in your actual operation, not generic test scenarios.

Inventory management that fits your operation, not the other way around

Custom stock management for complex product structures, multi-location operations, and compliance requirements.

Frequently asked questions

Custom inventory management makes sense when your product structure is complex (kits, assemblies, lot or serial number tracking) and off-the-shelf systems handle it poorly. It also makes sense when you operate across multiple locations and need a unified stock view, when SaaS pricing at your scale has become unsustainable, or when industry compliance requirements (FDA lot traceability, pharmaceutical GMP, food safety) need specific data capture. Many businesses reach a point where customisation costs and workarounds exceed the cost of building exactly what they need.

Lot tracking is the ability to trace a product back to the specific production batch it came from, and to track that lot through your supply chain from receipt through sale. You need it when quality recalls require identifying all units from a specific run, when regulations mandate batch traceability (FDA, pharmaceutical GMP, food safety), or when your costing requires FIFO or FEFO rotation by lot. We implement lot tracking with full forward and backward traceability, forward trace from a lot to all sales, backward trace from a sale to the originating lot and supplier.

Custom inventory management integrates with your ERP (SAP, Oracle, NetSuite, Microsoft Dynamics) for financial posting and purchase orders, your e-commerce platform (Shopify, Magento, WooCommerce) for order management and stock deduction, your WMS for warehouse operations, and your supplier systems via EDI or API for purchase order acknowledgement and advance ship notices. We design the integration architecture during scoping and implement the right approach for each system, whether API, EDI, or database integration for on-premise systems.

A focused system covering one warehouse, core stock management, basic supplier and purchase order management, and integration with one e-commerce platform typically runs $20,000 to $60,000. A full platform with multi-location management, lot tracking, kitting, WMS integration, and ERP financial posting typically runs $60,000 to $150,000. Cost depends on product structure complexity, number of locations, and compliance requirements. We scope every project before pricing it.

A focused inventory system covering one location with standard stock management and a single integration typically ships in 8 to 10 weeks. A full multi-location platform with lot tracking, kitting, WMS integration, and ERP financial posting typically takes 12 to 16 weeks. Complexity drivers include the number of locations, compliance requirements, and the depth of system integrations. Timeline and cost are locked before development starts.

Yes. We sign NDAs before any project discussion involving sensitive business data, supplier relationships, or proprietary inventory logic. NDA signing happens in the first meeting, before we see any operational data. Full source code ownership is also transferred on project completion.

Work with us

Tell us what you need. We'll tell you what it would take.

We scope Inventory Management Software Development in 30 minutes. You walk away with a clear cost, timeline, and approach. No commitment required.

  • Scope and cost agreed before work starts. No surprises. No obligation.
  • Working prototype within 3 weeks of kickoff.
  • Pay by milestone. You see progress before each invoice.
  • 60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
  • All conversations are NDA-protected.