Hi, I have not built a custom connector for Fivetran before. But I have experience working with ETLs.
1) I worked at Amazon as an SDE for 2 years in the Marketing Automation team where I wrote ETLs to send automated recommendation emails to customers. I used Hive, Java, AWS EMR
2) I worked as a CTO at an Analytics startup. We built social media analytics and web analytics platform. I wrote a Javascript SDK that tracks user interactions in Websites and Hybrid mobile apps and sends data to Lamba API in realtime which is then processed and inserted into RDS. Dashboard Reads from RDS. Also used Apache Airflow to collect data from Social media platforms and process it for dashboard to read. Used: Javascript, NodeJS, GraphQL, Python, Airflow, AWS Lambda, API Gateway, RDS, PostgreSQL, Apache Airflow.
I think I have the expertise in the required skills. Would like to have a chat with you to know more. Looking forward. I am living in India, but I can work in the European timezone.
Regards,
Vivek