I will automate your recurring CSV merge and reporting workflow

China

I speak English

CSV Data Cleaning and Workflow Automation

I build local CSV workflows with JavaScript and Node.js: file merging, field standardization, duplicate checks, validation and summary reports. Deliverables can include reusable source code, exception...
About this Gig

Turn recurring CSV exports into a repeatable local workflow.


Includes up to 5 same-structure UTF-8 CSV files, 50,000 total rows, 30 columns, up to 5 agreed transformation rules and one summary. Delivery: reusable local tool and source code, checked outputs, duplicate and exception reports, example files and run instructions.


Original files are preserved. Missing amounts are flagged, never guessed. Conflicting IDs are isolated for your review. My demo uses fictional data, not past client results.


AI assists development; deterministic code performs processing and calculations. Confidential data is not sent to AI tools without permission. No paid API is needed.


One in-scope revision and 7 days of fixes for agreed-scope defects. New formats or features need a separate scope. Windows x64 demo available; your environment must be confirmed. No scraping, live integrations, hosting, XLSX macros, accounting advice or unlimited support.


Please message before ordering with an anonymized sample, expected output, rules and operating system.

Technology:

Other

Expertise:

Data manipulation

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Data validation

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Normalization