PRODUCTION INITIATIVES · ARCHITECTURAL DOSSIERS

5 CASE STUDIES

Systems Architecture & Case Studies

High-throughput, mission-critical infrastructure engineered under strict regulatory compliance, tight operational tolerances, and national-scale concurrency constraints.

Initiative 01 · Settlements & LedgersZero Financial Drift

The Double-Entry Ledger & Two-Phase Balance Reservation

Single source of financial truth with ACID compliance, two-phase balance reservation (AVAILABLE to RESERVED), and mathematical debit/credit balancing.

The Problem:

Inconsistent ledger states and ghost balances during high-concurrency wallet checkouts threatened regulatory standing.

The Decision:

Enforced strict synchronous two-phase balance reservation and atomic Redis SETNX mutex locks recording into an immutable Double-Entry ACID Ledger in ScyllaDB.

Tradeoff:

Enforced strict synchronous two-phase balance reservation over raw optimistic write throughput.

Business Outcome:

Maintained 100% mathematical ledger parity across 50,000+ daily transactions with zero duplicate payouts.

[Double-Entry Ledger][Two-Phase Reservation][ACID Compliance][Redis SETNX Idempotency][ScyllaDB Fact Store]

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Initiative 02 · Risk & eKYCSub-15ms SLA

eKYC, Central Bank Harim OTP & PCI-DSS Token Vault

Sub-15ms risk engine evaluating transactional anomalies, zero-storage CVV2 vault isolation, and Central Bank 4-parameter Harim dynamic OTP.

The Problem:

Static rules caused high false positives and fraudsters exploited SIM-swap delays to bypass legacy OTPs.

The Decision:

Deployed isolated PCI-DSS Token Vault for sensitive card tokens, integrated national eKYC (Shahkar/Sabt-Ahval), and 3DS 2.0 biometric liability shifting.

Tradeoff:

Refused to cache CVV2 credentials for one-click checkout convenience, enforcing strict zero-storage PCI-DSS tokenization.

Business Outcome:

Slashed illicit drain by 94 percent and maintained a frictionless pass rate above 92 percent in 3DS 2.0.

[Zero-Storage CVV2 Vault][Harim Dynamic OTP][Shahkar National eKYC][PCI-DSS Compliance][Neo4j Graph Forensics]

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Initiative 03 · Payment SwitchSub-30ms Failover

Smart PSP Switch & Dynamic Weighted Routing

Enterprise Head-to-Head (H2H) switch unpacking ISO 8583 MTI 0200/0210 financial telegrams with sub-30ms automated failover across SEP, PEC, BPM, and PEP.

The Problem:

Single-PSP vendor lock-in created massive checkout drop-offs during bank maintenance windows and national clearing congestion.

The Decision:

Engineered Switch-PSP with dynamic weighted routing based on real-time success rates, fee tiers, and rolling P99 latency, integrating Faravaran Hub adapters.

Tradeoff:

Built an agnostic multi-PSP switch topology with dynamic weight allocation rather than relying on a single PSP relationship.

Business Outcome:

Achieved 99.99% gateway availability, sub-250ms roundtrip checkout latency, and 30ms automated failover during upstream provider outages.

[Smart PSP Switch][Dynamic Weighted Routing][Faravaran Hub Integration][ISO 8583 H2H Pipeline][Sub-30ms Failover SLA]

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Initiative 04 · Reconciliation & Payouts24h Early Settlement

Event-Driven Multi-Pass Reconciliation & Early Merchant Settlement

Nightly Spring Batch 3-way reconciliation engine cross-referencing internal ledgers against bank clearing files, with auto-healing Refund-MNG and 24h payout batching.

The Problem:

Manual reconciliation delayed merchant payouts to 48h+, causing severe cash-flow friction for enterprise merchants.

The Decision:

Built an asynchronous multi-pass reconciliation engine over RabbitMQ activity queues, integrated automated bank SFTP pipelines, and launched 24h early merchant settlements.

Tradeoff:

Shifted from synchronous reconciliation to an asynchronous multi-pass state machine backed by automated bank SFTP pipelines.

Business Outcome:

Launched 24h early merchant settlement with automated daily floating fee collection, eliminating 100% of manual reconciliation overhead.

[Spring Batch Reconciler][Auto-Healing Refund-MNG][RabbitMQ Event Mesh][Paya/Satna Bank-Proxy][Early Merchant Settlement]

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Initiative 05 · Autonomous AI & AgentsChief of Staff Swarm

Autonomous AI Workforce: Life Dashboard, Second Brain & Chief of Staff

Hierarchical multi-agent workforce led by an AI Chief of Staff (Jarvis) orchestrating 6 specialist sub-agents, integrated with an Obsidian Second Brain and automated 07:00 AM Life Dashboard.

The Problem:

Executive cognitive overload, fragmented communication across tools, unindexed knowledge silos, and ad-hoc content creation consuming 25+ hours weekly.

The Decision:

Architected 5 core Claude & MCP agent systems: single-pane Life Dashboard, 1,200+ note Obsidian Second Brain RAG, diurnal Executive Assistant, brand-aligned Content Marketing agent, and a multi-agent Chief of Staff swarm.

Tradeoff:

Enforced strict tool schemas, local markdown memory persistence, and bounded agent verification loops over unconstrained non-deterministic LLM autonomy.

Business Outcome:

Reclaimed 25+ Hours / Week, unified 1,200+ vault notes with sub-50ms context retrieval, and deployed an autonomous 6-agent workforce in production.

[AI Chief of Staff][Obsidian Second Brain][Life Dashboard][Executive Assistant Loop][Brand Content Engine][Multi-Agent Swarm]

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