Hi, I'm Juan Pablo
I am a Software Engineer specializing in the .NET ecosystem and modern Frontend architectures. This site is a technical evidence repository of my work delivering scalable, end-to-end solutions: from complex legacy migrations to AI-powered optimizations. Explore the case studies below to see the architecture and implementation behind my code.
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Tech Stack
Technologies I've been working with to bring ideas to life
Backend
Frontend
Tools
Projects
A selection of my recent professional work and personal projects
Onsite 2 | Full Rebuild of Core Logistics App
Co-led the end-to-end architectural migration of the company’s flagship logistics platform from a legacy jQuery monolith to a modern full-stack ecosystem. By implementing Next.js and .NET Core, I achieved a 4.5x improvement in First Contentful Paint (0.4s) and a 96 Performance score in Lighthouse. This modernization significantly enhanced user experience while eliminating approximately $20,000 USD in projected outsourcing costs.
AI Carrier Integration | Semantic Error Layer
Developed an AI-driven normalization pipeline to standardize disparate error responses from multiple global carriers into a single canonical format. Implemented a Semantic Cache layer to optimize LLM token usage and minimize API latency, providing a unified error interface that streamlines troubleshooting.
Cloud Storage Migration | Performance Optimization
Engineered a high-efficiency storage migration, offloading legacy file records from MySQL (Base64) to AWS S3. By eliminating the 33% storage overhead inherent in Base64 encoding, I reduced database bloat and improved query latency, resulting in a 30% reduction in storage costs and more reliable data backups for the enterprise.
Internal Logistics Engine | Telemetry & Analytics
Designed and scaled core backend modules for the company’s internal logistics engine. Developed server-side logic in C#/.NET to process raw operational telemetry into automated analytics and reporting tools, significantly reducing manual monitoring and streamlining administrative workflows for internal stakeholders.
Work Experience
Software Engineer
PKT1 - Shipping logistics center.
- ✓Architectural Overhaul: Co-led the end-to-end reconstruction of Onsite 2, migrating a legacy jQuery monolith to a modern Next.js/TypeScript and .NET 10 architecture. Delivered a production-ready internal solution in 10 months, avoiding $20,000 USD in projected outsourcing costs.
- ✓Performance Engineering: Achieved elite performance metrics (0.4s FCP, 1.4s LCP) by optimizing the full data delivery pipeline. Implemented SQL query optimization and indexing to reduce server response times, paired with frontend virtualization, pagination, and debouncing, resulting in a 60% reduction in unnecessary network traffic and database load.
- ✓Infrastructure Optimization (S3 Migration): Engineered a high-efficiency storage migration, offloading legacy Base64 file records from MySQL to AWS S3. Eliminated 33% storage overhead, reducing database bloat and storage costs by 30%.
- ✓AI Integration & Semantic Caching: Developed an AI-driven normalization pipeline to canonicalize disparate carrier error responses. Implemented a Heuristic Fingerprinting engine and MemoryCache/Redis layer, reducing AI token costs by 90% and providing instant error resolution for end-users.
- ✓Backend Automation: Architected a fully digital client-onboarding system in .NET, replacing manual verification with automated multi-step validation. Decoupled onboarding from legacy services, significantly increasing platform reliability and throughput.
- ✓Quality & Standards: Strengthened codebase stability by introducing a rigorous testing culture (xUnit, Jest, React Testing Library) and documenting architectural patterns to ensure long-term maintainability for the engineering team.
Freelance Developer
Engineered end-to-end web solutions for local businesses, directly leading to my recruitment at PKT1. Managed the entire development lifecycle independently, from initial architecture and UI/UX design to cloud deployment and maintenance.
- ✓E-Commerce Architecture (Regina & Gael Studio): Architected and launched a comprehensive full-stack e-commerce platform. Integrated secure user authentication, complex product management systems, and a PayPal API payment gateway, including an automated system for secure digital file delivery.
- ✓Headless CMS Integration (Okayhey Temazcal): Designed and deployed a responsive marketing site integrated with Contentful CMS. This decoupling enabled non-technical stakeholders to manage dynamic content (blogs, galleries, FAQs) independently, eliminating the need for code-level updates for content changes.
- ✓Technical Self-Sufficiency: Leveraged self-taught expertise in TypeScript, serverless architecture, and RESTful APIs to deliver production-ready applications, maintaining a high standard of code quality and mobile-first responsiveness.
Let's Connect
Ready to add value to your team. Please feel free to get in touch