Backend Development for Crypto Airdrop Software

I'm seeking an experienced backend developer to create a crypto airdrop software. This is strictly a backend project with no front end required. The airdrop list will be provided through trustlines set up on the XRP ledger.

Key Requirements:
- The primary function of the software will be token distribution.
- Implement essential security features for token distribution, specifically:
- Encryption of transactions to ensure the security and integrity of the airdrop.
- Rate limiting to prevent potential abuse and ensure fair distribution.

Data Access:
- Trustlines data will be delivered via database access, so experience with database interaction is crucial.

Ideal Skills and Experience:
- Proven experience in backend development, specifically for crypto-related software.
- Strong understanding of security protocols and their implementation.
- Proficiency in database management and interaction.
- Familiarity with the XRP ledger and its trustlines system would be a significant advantage.