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I will build or fix n8n workflows with apis, webhooks, and google sheets
Siyu Ren
About this gig
I build and troubleshoot reliable n8n workflows that connect APIs, webhooks, Google Sheets, databases, and business tools.
I help fix failed executions, API connection problems, data transformation issues, and workflow logic errors. Your workflow will be tested with sample data and delivered with clear handover notes based on the selected package.
I can help with:
- REST API and webhook integrations
- Google Sheets reading, appending, and updating
- Data mapping, filtering, and transformation
- Duplicate detection and conditional routing
- Failed nodes, execution errors, and broken logic
- Scheduled data collection and synchronization
You will receive a tested workflow, exported n8n JSON, and a clear summary of what was built or changed.
I have 8 years of backend development experience and work with defined scope, careful diagnosis, and practical testing.
This Gig is for simple to medium workflows. Advanced AI agents, enterprise systems, complex OAuth setups, and high-volume architectures require a custom review.
Please message me before ordering with your goal, integrations, sample data, and any error screenshots.
Get to know Siyu Ren
Siyu Ren
AI App Troubleshooting and Backend Developer
- FromChina
- Member sinceJul 2026
- Avg. response time1 hour
Languages
Chinese, English
I help founders rescue and stabilize AI-built web apps and backend systems. I diagnose deployment failures, Supabase Auth/RLS problems, API and database bugs, and Spring Boot issues, then deliver tested fixes with clear handover notes. My stack includes Lovable, Bolt, Replit, React, Vite, Supabase, Vercel, Java, Spring Boot, REST APIs, PostgreSQL, MySQL, Redis, and n8n. With 8 years of backend experience, I focus on root-cause analysis, secure access, clear scope, and practical fixes without unnecessary rebuilding.
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FAQ
Can you build a new n8n workflow from scratch?
Yes. I build simple to medium workflows involving APIs, webhooks, Google Sheets, data transformation, filtering, deduplication, and conditional routing. Please send the required steps before ordering so I can confirm the package.
Can you fix an existing failed n8n workflow?
Yes. Send the workflow export, execution error, screenshots, expected result, and a list of connected services. I will diagnose the issue and confirm the appropriate package before you order.
Do you support self-hosted n8n?
Yes. I can work with n8n Cloud and self-hosted n8n. Server, reverse proxy, Docker, or infrastructure work must be reviewed separately before ordering.
What counts as one workflow issue or one integration?
One issue means one clearly reproducible failure in one workflow. One integration means one external service or API connection. Complex authentication, custom code, or multiple branches may require a custom offer.
