Proof Pack
Everything below is evidence you can check or a boundary I am naming myself. Where something is not verifiable, it says so.
What I can prove
Refunds retry under a bounded cap, re-inquire with the bank instead of assuming failure, persist gateway state immediately, and lock on the credit, not the queue. The four gateways I integrated, into an abstraction I did not design, carry 98% of card volume — about 1.33M transactions in 2025.
Refund turnaround dropped about 85%, a week to a day, air and hotel, finance approval retained. Mine since 2020.
Verticals from zero to live: two-airline interlining, an airfare limit-order engine, flexible search, gift cards. All five design specs behind the interlining ADRs are mine.
Go and look
Proves Reliability Engineering: how the money path fails safely, one decision written as an ADR.
Ownership, review, incidents, English.
Proves Automation and Production Ownership: an airfare limit order that buys and issues while the customer is offline. The page is in Persian.
Working style
I own verticals end to end, schema to live feature, and run them for years.
I fix incidents on the systems I own. No formal on-call rotation.
Bounded retry, structured logging, locks keyed to what they protect.
Design spec before code when the decision is expensive to reverse.
English in writing every day — docs, tickets, code review.
Stack