Hakan Sevimoğlu Hakan SevimoğluFreelance Developer · 18 yrs
SAP · Netsis · Manufacturing

Custom ERP / MRP Software Development: Every Process from Production to Warehouse in One System

I bring your production planning, inventory, warehouse and purchasing processes together in an ERP/MRP system built for your company, integrated with SAP and Netsis.

Quick answerERP (Enterprise Resource Planning) and MRP (Material Requirements Planning) software manages production, inventory, purchasing and finance processes in a single system. Hakan Sevimoğlu develops company-specific ERP/MRP modules and builds two-way integrations with existing systems such as SAP and Netsis.

Written by Hakan Sevimoğlu · Last updated:

Custom modules instead of an off-the-shelf ERP

Large ERP packages often don't fit a company's real workflow, and customizing them is expensive. You can keep your existing ERP and develop custom modules for the processes it doesn't cover, or set up a system that is entirely your own.

For details, see my articles on SAP integration and Netsis-integrated software.

What I offer

  • MRP & production planning

    Bills of materials, work orders and capacity planning.

  • Inventory & warehouse

    Location, lot and stock count management.

  • Purchasing

    Request, quote and order workflow.

  • Accounting integration

    Data exchange with SAP, Netsis and Logo.

  • BI & reporting

    Real-time dashboards and KPI tracking.

  • Mobile field entry

    Data entry from the floor with handheld terminals and tablets.

Technologies I use

PHPMySQLREST APISOAPSAPNetsisPythonBI DashboardKotlin

Official documentation and resources

Standards and official documentation I follow in projects:

Example projects

A selection of live projects serving real users.

How we work

  1. Free intro call

    We clarify needs, existing systems and goals together.

  2. Quote & roadmap

    Scope, technology, timeline and budget within 24 hours.

  3. Staged development

    Weekly demos and a live test environment.

  4. Launch & support

    Go-live, training and ongoing maintenance.

Free pre-analysisThe first meeting and roadmap are completely free, with no obligation.

Staged delivery and approvalYou review each module on a test environment before we move on.

Written scope and rightsScope, delivery and source code rights are defined in the contract.

Frequently asked questions

Why choose custom ERP software?

It fits your workflow exactly, has no license fees and can be extended as your needs change.

Will it work with my existing SAP or Netsis system?

Yes; two-way data flow is set up through API, database or file-based integration.

How long does an ERP project take?

It depends on the number of modules; core modules usually go live in 2–3 months, with the rest added in phases.

Can data be entered from the field on mobile devices?

Yes; handheld terminal and tablet apps allow real-time data entry from the warehouse and production floor.

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