Professional Experience
I bring nearly two decades of hands-on experience designing, building, and maintaining backend systems that operate reliably in real production environments. My work focuses on long-term maintainability, system scalability, and practical AI integration that supports business workflows rather than experimenting for novelty.
Senior Software Engineer – Backend & AI Systems
2002 – Present
- Designed and maintained backend systems using PHP, MySQL, Laravel, and CodeIgniter for long-term production use.
- Built secure authentication systems, role-based access control, and API-driven architectures.
- Developed AI-powered document processing pipelines including PDF extraction, OCR workflows, and invoice automation.
- Implemented document-based question-and-answer systems with confidence scoring and human fallback mechanisms.
- Integrated third-party services such as payment gateways, webhooks, and notification systems.
- Focused on performance optimization, security hardening, logging, and observability.
Mobile & API-Driven Applications
- Built mobile applications using React Native backed by RESTful APIs.
- Implemented secure login, registration, and token-based authentication flows.
- Handled push notifications, deep linking, and device-level permissions.
- Designed backend systems optimized for mobile scalability and reliability.
Selected Projects & Case Studies
AI-Powered Invoice Processing System
Designed and implemented an AI-assisted document processing system capable of extracting structured data from complex, multi-page PDF invoices. The system combines OCR, AI parsing, validation rules, and confidence scoring to automate workflows while safely falling back to human review when uncertainty is detected.
Document-Based Question & Answer Platform
Built a secure platform that allows users to upload documents and ask natural language questions. Answers are generated strictly from document context, with safeguards to prevent hallucinations. When information is missing, queries are escalated to human operators.
Scalable Backend for High-Volume Platforms
Architected and optimized backend systems handling millions of records and large-scale data flows. Emphasis was placed on query optimization, caching strategies, background processing, and long-term system stability.
Legacy System Modernization
Led refactoring and modernization efforts for legacy PHP applications, improving security, performance, and code quality while ensuring uninterrupted production operations.
System Architecture & Technical Leadership
- Architected scalable systems with clean separation of concerns and maintainable design.
- Reviewed and refactored legacy codebases to improve stability and readability.
- Provided technical guidance and mentoring to development teams.
- Worked closely with stakeholders to translate business requirements into technical solutions.
Industries & Project Types
Experience spans enterprise systems, document-heavy platforms, financial workflows, AI-assisted automation solutions, and long-running production applications. I specialize in systems that must operate reliably under real-world constraints.