Solutions EngineerVictor LeonFull Stack Problem Solver
Delivering high-performance technical solutions that drive business results. Specialized in scalable backend systems, data pipelines, and mission-critical applications.
About
Full Stack Developer with 6+ years of experience building scalable applications with TypeScript and Python.
I specialize in backend development, API design, and distributed systems. With expertise in both TypeScript and Python ecosystems, I develop robust, maintainable solutions across the entire stack. My technical approach emphasizes clean architecture, performance optimization, and comprehensive testing.
On the TypeScript side, I work extensively with Node.js, Express, and React, building type-safe applications with modern patterns. For Python development, I leverage FastAPI, Django, and data processing libraries to create efficient backend services and automation systems.
My experience includes designing microservice architectures, implementing complex data pipelines, and optimizing database performance for high-traffic applications. I prioritize writing clean, well-documented code that follows best practices and design patterns.
Backend Development
- API design and implementation
- Database optimization
- Authentication systems
- Microservice architecture
Data Engineering
- ETL pipeline development
- Real-time data processing
- Database performance tuning
- Data modeling and schema design
DevOps & Infrastructure
- Container orchestration
- CI/CD pipeline setup
- Cloud infrastructure (AWS, GCP)
- Monitoring and logging systems
Technical Stack
Core technologies and engineering expertise
TypeScript & JavaScript
Python
Databases & Infrastructure
Technical Focus
Development Approach
Building scalable, maintainable systems with clean separation of concerns and well-defined interfaces.
Comprehensive test suites with unit, integration, and end-to-end tests to ensure reliability.
Optimizing for speed, scalability, and resource efficiency at both application and infrastructure levels.
Featured Solutions
Business problems solved with technical excellence
Construction Document Management Platform
Digitized paper-based workflows for a construction firm, reducing document processing time by 72%.
Business Impact
Reduced document processing time from 4 days to 1 day. Improved accuracy by 34%. Saved $150K annually in administrative costs. Enabled real-time project tracking across 27 construction sites.
Technical Solution
Implemented a microservice architecture with TypeScript backend services, React frontend, and Prisma ORM for database access. Built custom OCR pipeline using Tesseract.js with pre/post-processing for construction document digitization.
Real-time Financial Data Pipeline
Engineered high-throughput data processing system handling 3,500 transactions/second for a financial services company.
Business Impact
Reduced data processing latency from 2.5 minutes to 200ms. Enabled real-time fraud detection, preventing an estimated $2.1M in fraudulent transactions annually. Scaled to handle 3x the transaction volume without infrastructure changes.
Technical Solution
Created a FastAPI backend with async processing capabilities, Pydantic for data validation, and SQLAlchemy ORM. Implemented Kafka for event streaming, Redis for caching, and custom partitioning for horizontal scaling.
Automated Trading Platform
Developed low-latency trading system with algorithmically optimized execution strategies.
Business Impact
Achieved 18% improvement in trade execution prices. Reduced execution latency by 65ms. Automated portfolio rebalancing saved 22 hours of manual work weekly. Generated 34% higher returns compared to manual trading.
Technical Solution
Built with Node.js and TypeScript for transaction handling and blockchain SDK integration. Implemented custom trading strategies with backtesting capabilities, automated execution, and real-time market data processing.