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Dennis
@mydataflow
Level 1
I clean messy spreadsheets and automate the busywork
Germany
German, English
About me
I clean up messy Excel and Google Sheets data and automate the work around it.
What I do:
• Data cleaning: duplicates, broken formats, mixed dates, split or merged columns
• Google Sheets automation: forms, emails and other tools feed your sheet, with an AI step that sorts or summarizes
• Reusable fixes, so next month's file cleans itself (Power Query or Apps Script)
Based in Germany. I handle your data under GDPR and sign an NDA on request.
Send me your file or a sample before you order. I'll tell you what I'd fix and what it costs.
Skills
Dennis
Offline •
Average response time: 1 hour
See my services
Data Cleaning
I will do excel data cleaning and formatting, dedupe and merge CSV or google sheets
Automations & Agents
I will build n8n ai automation ai agent google sheets workflow
Work experience
Freelance Data & Automation Specialist
LinkedIn • Self-employed
Jan 2024 - Present • 2 yrs 9 mos
Excel and Google Sheets systems for small businesses and coaches: CRM, ROI calculators, performance trackers and data cleanup. I also run my own AI automations that sort email, track leads and report into Notion and Google Sheets.
7 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 7 Reviews
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Most relevant
biber_baker
Switzerland
Professionelles, schnelles Datencleaning nach unseren Vorgaben; jederzeit wieder und empfehlenswert.
Helpful?
deggler67
Germany
Vielen Dank für die schnelle Hilfe! Dennis hat mir mit einer fehlerhaften Excel-Tabelle geholfen und sich sehr zügig um mein Anliegen gekümmert. Gleichzeitig hat er mir ein paar sinnvolle Ideen und Ergänzungen mit auf den Weg gegeben. Kein 0815 Freelancer, sondern echte und ehrliche Beratung und Kompetenz!
Helpful?
james_intermeta
Australia
Denis was very good to work with, he showed a great understanding of my desired outcomes and how to achieve them. Denis waw helpful with amendments and explanations of functions.
$400-$600
Price
2 weeks
Duration
Helpful?
jigga1974
Germany
⭐️⭐️⭐️⭐️⭐️ Great experience working with this seller! They cleaned and organized my Google Sheets data quickly and accurately. Communication was clear, and the final result exceeded expectations. Highly recommended for anyone needing reliable data cleaning and formatting.
Helpful?
yourpolly
Switzerland
Ongoing collaboration
Exzellente Zusammenarbeit, einer der besten Entscheidung mit ihm zu arbeiten, kann ich jedem wärmstens weiterempfehlen
$50-$100
Price
2 weeks
Duration
Helpful?
