I will build custom web applications and business systems

H
hendrikkoeleman
H
hendrikkoeleman
Hendrik K
build custom web applications and business systems
Full Screen
build custom web applications and business systems

About this gig

Need a web application or business system built around your workflow?


I develop custom business software using React, JavaScript, Node.js, Express and Prisma. My projects include ERP Buddy, Source Buddy, Accounting Buddy and Manufacturing Buddy, covering inventory, purchasing, invoicing, supplier workflows and reporting.


The Basic package delivers one agreed feature in a compatible React/Node application: one data-entry screen, one related database entity and create/read/update operations. It includes source changes, functional checks, handover notes and one revision against the agreed specification. Existing authentication is reused where needed.


Larger web applications, ERP modules, integrations and systems are scoped and quoted individually. The Basic package excludes full ERP builds, new authentication, migrations, hosting and production deployment.


Message me on Fiverr before ordering so we can agree on compatibility, fields and acceptance criteria. Development may use AI-assisted tools; tell me any processing restrictions before ordering. Use synthetic examples and never include passwords in your initial brief.

  • Programming language

    • JavaScript

  • Frontend framework

    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • Node.js

Get to know Hendrik K

Hendrik K

Inventory spreadsheet cleanup

  • FromAustralia
  • Member sinceAug 2018
  • Avg. response time1 hour

  • Languages

    English
I provide focused inventory spreadsheet cleanup through SheetFix. For small retailers, I tidy one Excel or CSV table, preserve original records and identifiers, standardise agreed formats, and flag uncertain data for review. Deliverables include a cleaned workbook, CSV and change log. Work is AI-assisted and checked against agreed rules. A synthetic sample is available. Live store access, stocktakes and missing-data reconstruction are outside this service.

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