Selected Works

012024 - 2025

Sentinel Shield

Cybersecurity Engineering

Lead Security Architect
GovTech / Critical Infrastructure

Context & Problem

  • - Legacy infrastructure vulnerable to state-sponsored APTs.
  • - Fragmented identity management across 30+ agencies.
  • - Requirement for 99.999% uptime during security hardening.

Solution Architecture

Designed and implemented a sovereign cloud enclave with strict air-gapping capabilities. Replaced perimeter-based security with identity-centric controls using mutual TLS (mTLS) everywhere.

Technical Stack

Cybersecurity
  • Zero Trust Architecture (NIST 800-207)
  • Hardware Security Modules (HSM) for PKI
  • Automated Threat Intelligence Feeds
Software
  • Rust for critical security components
  • Kubernetes with Istio Service Mesh
  • eBPF for kernel-level observability
Consulting
  • ISO 27001 Compliance Roadmap
  • Stakeholder alignment with government ministries

Impact & Results

  • ✓ Stopped 100% of lateral movement attempts in red team exercises.
  • ✓ Reduced incident response time from 4 hours to 15 minutes.
  • ✓ Achieved full GDPR and local data sovereignty compliance.

Lessons & Evolution

"Learned that organizational inertia is the biggest security vulnerability. Technical controls must be paired with rigorous change management."

022023 - 2024

Helios FinCore

Software Engineering & Architecture

Principal Engineer
FinTech / Banking

Context & Problem

  • - Need for real-time transaction processing at scale (10k TPS).
  • - Legacy mainframe dependency slowing down product velocity.
  • - Strict regulatory requirements for data consistency (ACID).

Solution Architecture

Architected a strangler-fig migration pattern to decouple core banking ledgers. implemented an event-driven architecture to handle ledger updates asynchronously while maintaining strong consistency.

Technical Stack

Cybersecurity
  • Financial Grade API (FAPI) Security Profile
  • Field-level encryption for PII data
Software
  • Go (Golang) for high-throughput microservices
  • Apache Kafka for event streaming
  • CockroachDB for distributed SQL
Consulting
  • Migration strategy from monolith to microservices
  • Developer productivity engineering

Impact & Results

  • ✓ Processed $2B+ in transactions with zero downtime.
  • ✓ Improved feature deployment frequency by 400%.
  • ✓ Reduced infrastructure costs by 30% via cloud-native optimizations.

Lessons & Evolution

"Eventual consistency is a business decision, not just a technical one. educating stakeholders on the CAP theorem was crucial."

032023

Aegis Health Interop

Technology Consulting

Strategic Advisor
Healthcare

Context & Problem

  • - Siloed patient data preventing holistic care.
  • - High risk of data breaches in transit.
  • - Complex HL7/FHIR interoperability requirements.

Solution Architecture

Developed a secure interoperability layer allowing disparate EMR systems to communicate. Implemented a consent management platform giving patients granular control over their data.

Technical Stack

Cybersecurity
  • HIPAA Compliance auditing
  • Differential Privacy techniques
Software
  • Next.js for provider portals
  • Python/FastAPI for data ingestion
  • Azure Healthcare APIs
Consulting
  • Digital Transformation Roadmap
  • Clinical workflow analysis

Impact & Results

  • ✓ Unified 5M+ patient records across 12 hospitals.
  • ✓ Reduced data retrieval time for doctors by 60%.
  • ✓ Zero data leaks during the 12-month pilot.

Lessons & Evolution

"In healthcare, UX is a safety feature. If security controls impede doctors, they will bypass them."

042022 - 2023

Nexus Fleet Grid

Software & IoT Security

Systems Architect
Mobility / Logistics

Context & Problem

  • - Securing communication between autonomous vehicles and HQ.
  • - Unreliable network conditions in remote areas.
  • - OTA (Over-the-Air) update vulnerability risks.

Solution Architecture

Built a mesh network protocol for fleet coordination that tolerates partition. Implemented a blockchain-based ledger for immutable audit logs of vehicle actions.

Technical Stack

Cybersecurity
  • IoT Device Attestation
  • Secure Boot & Code Signing
Software
  • Rust Embedded
  • MQTT over WebSockets
  • Edge Computing (AWS Greengrass)
Consulting
  • Risk Assessment for autonomous systems

Impact & Results

  • ✓ Secured 500+ autonomous delivery units.
  • ✓ Reduced OTA update failure rate to <0.1%.
  • ✓ Enabled real-time threat detection at the edge.

Lessons & Evolution

"The physical world is the ultimate edge case. Security models must account for physical tampering."