Operational portfolio

Real asset risk

Systems I’ve Owned

I don’t list features here. These are the systems I’ve owned across custody, payments, stablecoins, transaction pipelines, and money movement - where product decisions carry real operational and financial consequences.

Core systems6
Assets supported150+
Ops cadence24/7
AccountabilityRisk-owned
Read the notes(Design decisions, failure modes, governance-aware UX)
Digital asset system visual

System 1

Digital Asset Custody & Wallet Architecture

High-throughput custody and wallet system for a centralized exchange operating across multiple blockchains.

What I owned

  • Wallet architecture (Hot / Warm / Cold / Vault)
  • Signing models and transaction authorization flows
  • Deposit and withdrawal lifecycle
  • Asset movement policies between layers

Why it mattered

This system secured and moved real customer assets at scale while maintaining operational resilience during peak load and incidents.

Key decisions(3)
▾
  • Where automation stops and manual controls start
  • Trade-offs between speed, security, and operational risk
  • When to rely on external services vs internal control

System 2

On-Chain Transaction & Ledger Pipeline

End-to-end transaction and money-movement pipeline connecting blockchain networks, operational workflows, and internal ledgers.

What I owned

  • On-chain to off-chain reconciliation logic
  • Ledger consistency guarantees
  • Handling partial failures, reorgs, and delayed confirmations

Why it mattered

Prevented balance drift and protected the platform from silent accounting risk.

Key decisions(3)
▾
  • Confirmation thresholds per network
  • Ledger source-of-truth design
  • Failure recovery strategy

System 3

Transaction Monitoring & Risk Signals

Internal monitoring and alerting system for asset movement, payment behavior, and anomalous activity.

What I owned

  • Risk signals across wallet activity and user behavior
  • Alert thresholds and escalation paths
  • Incident ownership and response flows

Why it mattered

Reduced incident impact and enabled fast, confident decision-making during stress events.

Key decisions(3)
▾
  • What should block automatically vs alert humans
  • How to avoid false positives without missing real risk
  • When to freeze flows vs degrade gracefully

System 4

Asset Onboarding Framework

Governance and execution framework for listing new assets and networks.

What I owned

  • Asset risk assessment criteria
  • Operational readiness checks
  • Launch sequencing and rollback strategy

Why it mattered

Allowed rapid asset expansion without compromising custody integrity or operational readiness.

System 5

Stablecoin & Treasury Movement

Internal movement layer for stablecoin reserves, treasury orchestration, liquidity placement, and operational control of value movement across rails.

What I owned

  • Reserve movement logic and approval boundaries
  • Internal treasury orchestration across operational accounts
  • Liquidity placement across rails and counterparties
  • Operational controls for stablecoin-based value movement

Why it mattered

Turned treasury movement into an explicit operating system instead of a hidden manual process.

Key decisions(3)
▾
  • How much automation treasury movement should tolerate
  • Where liquidity should sit across internal and external rails
  • When reserve protection should override product speed

System 6

Payment Gateway & Settlement Flows

Gateway and settlement layer for payment acceptance, quote lifecycles, confirmations, callbacks, and reconciliation across merchants, ledgers, and chains.

What I owned

  • Payment acceptance flows and quote / address / expiration logic
  • Callback, confirmation, and status transition handling
  • Settlement orchestration across merchants, ledgers, and chains
  • Reconciliation rules for disputed, delayed, or mismatched movement

Why it mattered

Made payment flow behavior, settlement timing, and accounting integrity explicit product surfaces instead of back-office clean-up.

Key decisions(3)
▾
  • How to handle underpayment, overpayment, and expired quotes
  • Which event should qualify as settled state
  • How merchant-facing simplicity should map to backend control
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AYAlex YaghoubiDigital Asset & Payment Infrastructure