Software Development, System Maintenance & Fractional CTO Advisory

A growing multi-product SaaS ecosystem lacked centralized identity governance, resulting in cross-app session drop-offs and heightened security audit risk.

Implementing zero-trust session revocation, hardware-backed WebAuthn, and SCIM directory provisioning across disparate clients with zero breaking changes.

Architected a Secure-by-Design identity microservice featuring OAuth 2.1/PKCE, TOTP/FIDO2 hardware keys, Redis token revocation lists, and federated SSO integration.

Achieved verified OWASP Top 10 compliance, reduced authentication round-trip latency by 40%, and unified access across 3 enterprise platforms with zero downtime.

Developer education platform experienced exponential cohort growth that overwhelmed shared in-browser compiler infrastructure.

Executing arbitrary untrusted user code safely without container escape risks or cross-tenant memory exhaustion.

Architected an ephemeral containerized execution pipeline with strict cgroup isolation, task priority queues, and real-time compiler streaming.

Scaled reliably to 10k+ concurrent active engineers, maintaining sub-120ms execution turnaround with zero sandbox escape incidents.

High-capacity hospitality venues suffered revenue losses and customer friction due to table inventory collisions during peak dinner rushes.

Eliminating race conditions during simultaneous multi-channel booking spikes while keeping local offline-first POS systems synchronized.

Implemented an event-driven reservation broker leveraging Redis distributed lock mutexes, transactional isolation levels, and webhook retry queues.

Eliminated booking collisions completely, achieved 99.99% reservation consistency under 10x traffic surges, and kept POS sync under 100ms.

Global B2B trade intermediaries and merchant platforms suffered from 4–7 day international clearing delays, currency slippage, and fraud risks in multi-party vendor payouts.

Navigating multi-currency FX conversions, stringent AML/KYC regulatory checks, and transactional race conditions during high-volume ledger reconciliation.

Architected an ISO 20022 compliant double-entry ledger settlement engine with automated escrow hold/release workflows, FX rate locks, and webhook payout verification.

Scaled to $120M+ annualized transaction volume, reduced clearing latency from 5 days to under 15 minutes, and maintained zero ledger discrepancy.

Fast-paced engineering teams experienced code review bottlenecks, inconsistent coding standards, and inadvertent OWASP security vulnerabilities slipping into release branches.

Human reviewers lacked time to verify deep edge-case regressions, token leaks, and performance anti-patterns across hundreds of weekly pull requests.

Developed an autonomous AI code reviewer pipeline that hooks directly into GitHub/GitLab CI/CD, performs Abstract Syntax Tree (AST) parsing, identifies security vulnerabilities (OWASP Top 10), and posts context-aware inline code suggestions.

Cut PR review turnaround times by 60%, caught 140+ critical security and memory leak defects before production, and saved 45 hours per week of senior developer review time.

Freight carriers and 3PL enterprises faced delivery bottlenecks, fragmented dispatch schedules, and lack of real-time consignment visibility across multi-state transit hubs.

Handling dynamic multi-drop vehicle route optimization, manual bill-of-lading reconciliation, and delayed electronic proof-of-delivery (e-POD) synchronization caused high fuel costs and customer SLA penalties.

Architected an automated dispatch orchestration engine with dynamic vehicle routing algorithms, automated geofence triggers, low-power telemetry ingestion, and real-time electronic Proof of Delivery pipelines.

Reduced fleet transit time by 32%, achieved 99.4% on-time consignment fulfillment, and automated invoice dispatch across 250+ enterprise carrier fleets.

High-volume financial transactions and digital lending platforms faced escalating threats from identity spoofing, synthetic fraud rings, and suspicious money routing.

Evaluating incoming transactions across 200+ behavioral and velocity signals in under 50 milliseconds without causing false declines for genuine enterprise customers.

Built an ultra-low latency risk assessment pipeline combining graph-based anomaly detection, machine learning behavioral scoring, and real-time Kafka event streaming with adaptive rules engine.

Blocked $18M+ in fraudulent transactions, reduced false positive rate to below 0.12%, and maintained end-to-end evaluation latency under 38 milliseconds.

Commercial property management companies managing multi-tier brokerage commission splits, and recurring escalation leases without a central system.

Complex lease escalation schedules, multi-tier brokerage commission splits, and recurring escalation leases without a central digital ledger.

Built a centralized B2B property ERP featuring digital lease management, automated commission distribution algorithms, tenant KYC onboarding, and SCIM directory synchronization.

Reduced lease onboarding time by 65% and managed $45M+ in lease portfolio value with zero manual reconciliation errors.

Enterprise engineering teams lacked structured upskilling pathways and real coding practice environments.

Providing isolated, secure coding sandboxes at scale without shared environment contamination.

Multi-tenant corporate training platform with containerized coding sandboxes, skill-gap analytics, and SCORM-compliant content delivery for 45k+ engineers.

Reduced engineering skill ramp time by 50% and trained 45,000+ engineers across enterprise clients.

Fintech aggregators needed a unified switch layer to route utility and remittance payments across multiple banking partners.

Handling provider failures, duplicate payment retries, and real-time reconciliation under 3.5M+ monthly transactions.

High-throughput payment switching engine with multi-provider failover, idempotent transaction retries, and real-time settlement reporting.

Achieved 99.85% transaction success rate across 3.5M+ monthly payments with zero duplicate settlements.

Built real-time inventory sync, automated purchase order generation, and multi-vendor fulfillment routing. Achieved 48% faster order fulfillment and 99.9% inventory accuracy.

Built multi-tenant SaaS CRM with behavioral lead scoring, automated drip sequences, and real-time pipeline analytics managing 1.2M+ leads with 3x faster lead response times.

Real-time intercity coach seat reservation, dynamic pricing, and live GPS dispatch for 450+ fleet vehicles. Achieved 22% deadhead reduction and managed fleet at scale.

Sub-second live driver tracking, AI dispatch matching, and intelligent surge pricing for 60k+ daily deliveries with <350ms map update latency.

AI-powered listing verification, fraud detection, and geospatial property search serving 350k+ monthly active users with 92% fraudulent listings removed automatically.

Real-time cab hailing, intercity seat booking, and dynamic surge engine serving 250k+ bookings with 42-second checkout end-to-end.

Headless commerce architecture with edge-cached PDPs, optimistic cart UI, and sub-second checkout achieving 3x conversion lift for high-traffic D2C brands.

RAG-powered enterprise document intelligence platform with semantic search, policy Q&A, and audit-ready citation trails — 70% faster policy lookup across 50k+ indexed documents.

Vision LLM + OCR pipeline extracting tabular invoice line items, auto-reconciling bank feeds, and generating XBRL/JSON statutory reports. Reduced overhead 85% across 500k+ invoices.