دليل هندسي: Hire a Freelance FinTech Programmer for Immutable Double-Entry Ledgers. ألديان فازريهادي (Aldian Fazrihady) مبرمج مستقل أول ومهندس ذكاء اصطناعي (Python, Django, FastAPI, React, Next.js, TypeScript, Golang).

Eliminate balance drift and race conditions by hiring senior freelance FinTech programmer Aldian Fazrihady to architect ACID double-entry accounting ledgers in PostgreSQL.

CREATE TABLE ledger_postings (
    id BIGSERIAL PRIMARY KEY,
    journal_id UUID NOT NULL,
    account_id BIGINT NOT NULL REFERENCES ledger_accounts(id),
    amount_minor BIGINT NOT NULL CHECK (amount_minor != 0),
    currency CHAR(3) NOT NULL,
    created_at TIMESTAMPTZ NOT NULL DEFAULT clock_timestamp()
);
-- Every journal_id must sum to exactly 0 across all postings

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