We are building a cloud-driven transactional platform assembled by integrating third-party APIs, event routing via webhooks, cloud functions, object storage, dynamic usage billing, and automated control planes. This is NOT simple website development.
We are looking for an engineer with real, hands-on experience in: - Cloud API integration - Webhook fan-out, retries, and fallback lanes - Idempotency and deduplication - Rate limit handling - S3-equivalent cloud object storage - Dynamic pricing control panel - Usage-based billing logic - Zero-ops thinking (fully automated)
A complete prototype specification document (non-commercial core code) is available and will be provided only after confirming capability.
Before signing any contract, you must deliver a *free prototype* to validate ability (the specification will be provided once you accept). Only proposals with a working prototype will proceed to contract.
Payment Terms: - 70% paid through milestones - 30% deferred final payment released after 3–6 months of stable production operation, to ensure no hidden defects
If you accept a free prototype and 30% deferred payment, reply: “OK – I accept the free prototype and 30% deferred payment.”
To confirm you actually read this description, reply with: “Zero-Ops Confirmed”
Proposals without this phrase will be ignored.
Deliverables - Deliver a free prototype to verify capability - Integrate third-party APIs - Implement webhook fan-out and retry logic - Ensure idempotency and deduplication - Handle rate limits and fallback lanes - Set up usage-based billing - Create a dynamic pricing control panel - Set up S3-equivalent cloud object storage - Ensure zero-ops operation
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