Services Portfolio About Get Free Assessment

What I've Built

Production-ready systems with enterprise-grade quality. Each project demonstrates a commitment to security, reliability, and clean architecture.

Secure-Chat

Enterprise E2E Encrypted Messaging

Problem Solved

Organizations needed a self-hosted messaging solution that meets strict security and compliance requirements, without relying on third-party servers that could be compromised or subpoenaed.

Technical Approach

Built on the Signal Protocol for end-to-end encryption, ensuring that even the server operator cannot read messages. Implemented with a modern React frontend and Fastify backend, with WebRTC for real-time audio/video.

Key Features

  • Signal Protocol encryption (same as Signal app)
  • Video/voice calls with encrypted streams
  • File sharing with at-rest encryption
  • Group chats with forward secrecy
  • Multi-device support
  • Push notifications
  • Self-hosted or managed deployment options

Tech Stack

React Fastify PostgreSQL WebRTC Docker Signal Protocol

Outcome

Deployed for organizations requiring HIPAA-compliant communication, with zero security incidents.

Budget-Software

Financial Forecasting Engine

Problem Solved

Users needed accurate predictions of future account balances to avoid overdrafts and plan major purchases, but existing tools only showed historical data or simple projections.

Technical Approach

Developed a forecasting algorithm that analyzes spending patterns, recognizes recurring transactions, and projects balances months into the future with high accuracy.

Key Features

  • Predicts account balances months ahead
  • Pattern recognition from spending history
  • Multi-account support
  • Recurring transaction detection
  • Category-based spending analysis
  • What-if scenario modeling

Tech Stack

Next.js TypeScript Prisma PostgreSQL

Outcome

Personal finance tool with predictive accuracy that helps users plan months ahead with confidence.

Patching-as-a-Service

Enterprise Infrastructure Automation

Problem Solved

Fortune 100 company needed to automate their RHEL patching lifecycle across thousands of servers while maintaining compliance with strict change management processes.

Technical Approach

Built a workflow orchestration system using Temporal for reliable, resumable patching operations. Integrated with ServiceNow for change management and Vault for secrets management.

Key Features

  • Automated RHEL patching lifecycle
  • ServiceNow integration for change tickets
  • Compliance workflows with approval gates
  • Full audit trails for every operation
  • Automatic rollback capabilities
  • Scheduled maintenance windows
  • Real-time status dashboards

Tech Stack

FastAPI Temporal Kubernetes Vault ServiceNow API

Outcome

Reduced patching time by 80% while achieving 100% compliance with change management requirements.

IoT & RF Systems

Embedded Hardware & Mesh Networking

About This Work

Hands-on experience building and integrating IoT systems, mesh networks, and software-defined radio projects. I work with real hardware to prototype and deploy connected systems.

Capabilities

  • Mesh networking with Meshtastic and Meshcore devices
  • Software-defined radio with RTL-SDR
  • ESP32 and Raspberry Pi embedded projects
  • LoRa long-range communication systems
  • RF protocol analysis and integration
  • Sensor networks and data collection

Hardware

RTL-SDR ESP32 Raspberry Pi Meshtastic LoRa

Demonstrates

  • RF/IoT expertise
  • Embedded systems
  • Mesh networking
  • Hardware prototyping

Secure File Sharing Portal

Enterprise Security Architecture

Problem Solved

Enterprise clients needed a secure way to share sensitive files with external parties, with full audit trails and granular access controls that satisfy compliance requirements.

Technical Approach

Security-first architecture with defense in depth: JWT-based authentication, Argon2 password hashing, encrypted file storage, and comprehensive audit logging of all access attempts.

Key Features

  • End-to-end encrypted file transfers
  • Granular access controls (time-limited, password-protected)
  • Complete audit trails for compliance
  • JWT-based authentication system
  • Argon2 password hashing
  • Automatic file expiration
  • IP-based access restrictions

Tech Stack

Node.js TypeScript JWT Argon2 PostgreSQL

Demonstrates

  • Security-first architecture
  • Compliance-ready design
  • Defense in depth
  • Enterprise requirements

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