SOFTWARE ARCHITECT & AI ENGINEER

I design enterprise systems that actually ship at scale.

15 years. 10M+ users. 300% performance gains. From architecture to production — end to end.
Let's collaborate
Willian Pinho - Software Architect & AI Engineer
EXPERTISE

The full stack, from architecture to production

Architecture & Systems

Cloud & Infrastructure

Languages & Full-Stack

AI & Machine Learning

SERVICES

What I can do for your company

01

Solutions Architecture

End-to-end system design from cloud infrastructure to user interface. I design scalable architectures using modern patterns: microservices, event-driven, serverless, and cloud-native approaches that support millions of users and deliver measurable business impact.

MicroservicesEvent-DrivenCloud-Native
02

AI/ML Integration

Transform your products with intelligent features. From LLM integration and RAG systems to custom ML pipelines, I bring AI from proof-of-concept to production-ready solutions. Experienced in computer vision, real-time processing, and next-generation AI applications.

LLMsRAGLangChain
03

Technical Leadership

Build and scale high-performing engineering teams. I bring 15+ years of experience leading teams of up to 20 developers across multiple technology stacks. Expert in clean architecture, design patterns, TDD/BDD, and CI/CD best practices.

Team BuildingClean ArchitectureMentoring
04

Full-Stack Development

Deliver complete solutions using Python, TypeScript, React, and cloud technologies. From MVP to enterprise-grade systems with security and scalability built-in from day one. Proven track record across fintech, healthcare, and startup environments.

PythonTypeScriptReact
CAREER JOURNEY

15 years of progressive technical leadership

Full career details on LinkedIn
2024
Cross-Platform SDK Modernization

Senior Software Engineer & SDK Architect

2024 - Present

Leading the architectural redesign and modernization of core mobile SDKs serving millions of users worldwide. Architecting next-generation Android and iOS SDKs, transitioning from legacy codebases to modern Kotlin and Swift architectures. Designing developer-centric APIs prioritizing ease of integration and intuitive usage patterns. Building AI-powered testing frameworks to improve coverage and regression detection. Owning the full development lifecycle from technical specification and system design through deployment.

2024 - Present

Senior Software Engineer & SDK Architect

Cross-Platform SDK Modernization

Leading the architectural redesign and modernization of core mobile SDKs serving millions of users worldwide. Architecting next-generation Android and iOS SDKs, transitioning from legacy codebases to modern Kotlin and Swift architectures. Designing developer-centric APIs prioritizing ease of integration and intuitive usage patterns. Building AI-powered testing frameworks to improve coverage and regression detection. Owning the full development lifecycle from technical specification and system design through deployment.

2023 - 2024

Senior AI Solutions Architect

Enterprise Banking & Fintech

Led architectural transformation of enterprise banking systems for Fortune 500 clients. Migrated legacy monoliths to event-driven microservices. Integrated AI-powered fraud detection and payment routing optimization, improving transaction success rates by 25%. Architected PCI DSS-compliant systems with end-to-end encryption and real-time threat detection. Achieved 60% reduction in system latency through optimized reactive patterns.

2022 - 2023

AI Engineer & Solutions Architect

Computer Vision & Document Processing

Designed intelligent document processing systems using TensorFlow, OpenCV, and custom ML pipelines. Automated customer onboarding workflows achieving 95% accuracy in document validation. Reduced processing time from 48 hours to under 5 minutes. Architected serverless cloud-native solutions on AWS handling 10x traffic spikes. This role marked my transition from pure architecture into applied AI engineering.

2021 - 2022

Software & Solutions Architect

Payment SDKs & Digital Transformation

Architected enterprise payment SDK solutions serving 10+ million users with 99.9% uptime. Designed layered SDK architecture with hardware abstraction layers for POS terminal integration. Led cross-platform development in Swift and Kotlin. Also led digital transformation for major e-commerce platforms, managing 20+ developers across multiple business domains and delivering 40% improvement in customer engagement.

2019 - 2021

Security Engineering Lead

Banking & Financial Systems

Spearheaded comprehensive security architecture transformation across mobile and backend financial systems. Implemented OAuth2/JWT authentication with Envoy proxy, achieving 85% reduction in unauthorized access. Architected ELK-based centralized logging for real-time security monitoring. Designed and deployed fraud detection systems that significantly reduced security incidents. Led incident response and established CI/CD security pipelines.

2018 - 2019

Technical Lead & Engineering Manager

Mobile & Backend Platforms

Managed cross-functional development teams of up to 11 engineers across mobile and backend platforms. Established technical excellence standards and drove architectural decision-making for critical financial applications. Improved code quality metrics by 40% and application response times by 60%. Designed technical training programs and mentored engineers on clean architecture and security-first development.

2014 - 2018

Senior Software Architect (R&D)

Augmented Reality, Computer Vision & IoT

Led advanced R&D initiatives architecting innovative solutions in mobile development, augmented reality, and computer vision. Built the Epson Moverio AR Platform for enterprise smart glasses with real-time analytics and intelligent object detection. Designed and trained TensorFlow models optimized for mobile deployment. Created hybrid inference architectures combining local processing with cloud fallback systems.

2011 - 2014

CTO & Co-Founder

Startup (Acquired)

Co-founded and led the technical vision for a local services platform from zero to acquisition. Built the entire stack: Django backend, PostgreSQL, native iOS and Android apps, AWS infrastructure. Recruited and mentored the engineering team. Led technical due diligence during acquisition process. This experience shaped my end-to-end perspective on building products from idea to exit.

2008 - 2011

Freelance Software Developer

Web Systems & Infrastructure

Started my career building websites and web systems as a freelancer. Worked with Java, PHP, HTML/CSS, and early cloud infrastructure on AWS. Delivered end-to-end solutions for small businesses and startups, handling everything from database design to deployment. This foundational period taught me to ship fast, communicate directly with stakeholders, and own the full lifecycle of a project.

SELECTED WORK

From architecture to shipping — real systems, real impact

Enterprise

Enterprise Fintech Platform

Architected a scalable payment processing system serving 10+ million users with 99.9% uptime. Designed microservices architecture with AI-powered fraud detection and payment routing optimization.

Business Impact: 300% performance improvement, 25% increase in transaction success rates
PythonJavaAWSMicroservicesKubernetesMachine Learning
Enterprise

Enterprise Security Architecture

Designed and implemented security architecture for a major financial institution. Created integration patterns, cybersecurity standards, and fraud prevention systems that significantly reduced security incidents.

Business Impact: Significant fraud reduction, enhanced security for millions of customers
JavaSpring SecurityTypeScriptCloud SecurityIntegration Patterns
Consulting

Enterprise RAG System

Built a retrieval-augmented generation system for a support team, integrating with Confluence knowledge base for intelligent ticket resolution and documentation search using LangChain and vector embeddings.

Business Impact: Automated ticket routing and resolution, reduced support response time significantly
PythonLangChainVector DatabasesConfluence APIRAGAWS
Consulting

Contract Lifecycle Management

Co-developed enterprise CLM platform handling contract creation, multi-step approval workflows, compliance tracking, and automated renewals for business clients.

Business Impact: End-to-end contract automation, compliance tracking, reduced manual overhead
ReactNode.jsTypeScriptPostgreSQLAWS
Consulting

Fitness & Coaching Platform

Designed and developed end-to-end mobile application enabling personalized workout plans with real-time coach support, progress tracking, and interactive exercise guidance.

Business Impact: Full product delivery from architecture to deployment
React NativeNode.jsPostgreSQLAWSReal-time APIs
Consulting

Private Tutoring Platform

Architected a marketplace connecting teachers and students with intelligent scheduling, session management, and integrated payment processing.

Business Impact: End-to-end marketplace from architecture to payment integration
ReactNode.jsTypeScriptStripePostgreSQL
Open Source

Document Management System

Cloud-based DMS with AI-powered document processing, real-time collaboration, and enterprise-grade security. Features semantic search with pgvector embeddings, PDF split/merge, OCR via AWS Textract, multi-tenancy with Row-Level Security, and a desktop upload agent.

Business Impact: Full-stack monorepo architecture, real-time presence with Socket.IO, resumable uploads for large files
Next.js 15NestJS 11PostgreSQLPrismaRedisBullMQAWS S3Socket.IOTypeScript
Open Source

Intelligent Document Processing

10-stage AI document processing pipeline with confidence-based routing, RAG-powered chat, and human review queue. Processes PDFs through OCR, classification, extraction, and quality assessment using Claude AI.

Business Impact: End-to-end AI pipeline with confidence routing, pgvector semantic search, Streamlit dashboard
PythonFastAPIPostgreSQLpgvectorAnthropic ClaudeStreamlitMinIODocker
Open Source

Large File MCP Server

Model Context Protocol server for intelligent handling of large files with smart chunking, navigation, and streaming. Features regex-powered search, file analysis, memory-efficient streaming, and built-in LRU caching for optimal performance.

Business Impact: Published on npm, integrated with Claude Code CLI, cross-platform support (Windows, macOS, Linux)
TypeScriptMCP ProtocolNode.jsStreaming I/OLRU Cache
Open Source

Agent Advisor Platform

AI-powered Python code analysis platform using Crew AI with multiple specialized agents. Provides comprehensive analysis of code quality, performance bottlenecks, security vulnerabilities (OWASP), documentation, and cyclomatic complexity metrics.

Business Impact: 47%+ test coverage, multi-layer caching (LRU + Redis + PostgreSQL), horizontal scaling with Celery
PythonFastAPICrew AIPostgreSQLRedisCeleryRadonDocker
Open Source

Smart Summary App

AI-powered full-stack application that transforms long text into concise summaries using GPT-4o-mini. Features real-time streaming with Server-Sent Events, comprehensive security measures including prompt injection prevention, and a responsive interface with production-ready CI/CD.

Business Impact: 95%+ test coverage, SSE streaming for instant feedback, security-first architecture
Next.js 15FastAPIOpenAI GPT-4o-miniTypeScriptPythonSSEVercelRender
Open Source

BTC Trading Bot

Production-ready cryptocurrency trading bot built with Clean Architecture and SOLID principles. Features adaptive hybrid strategies (Grid, Breakout, DCA), capital-based risk tiers, market regime detection, and full Telegram integration for monitoring and control.

Business Impact: Kelly Criterion position sizing, 10% max drawdown protection, multi-timeframe analysis
PythonClean ArchitectureBinance APITelegram BotMySQLTechnical Analysis
Open Source

ProductFactory

Automated software development platform integrating role-based architecture with AI/LLM technologies. Features 15+ predefined roles (CTO to QA), multi-project support, intelligent code analysis, and automated issue resolution with comprehensive logging.

Business Impact: Multi-LLM support (OpenAI, Claude, Mistral), hierarchical role collaboration, webhook integration
PythonOpenAIAnthropic ClaudeGitHub APIMulti-LLMRole-Based Architecture
Open Source

Meeting Minutes Creator

Professional React application for creating, managing, and exporting meeting minutes with modern UX/UI. Features structured data input for participants, agenda, discussions, decisions, and action items with PDF export and local storage persistence.

Business Impact: Fully responsive design, real-time validation, comprehensive form handling with Zod
React 19TypeScriptViteTailwind CSSshadcn/uiReact Hook FormjsPDF
Open Source

Dynamic Forms Platform

Multi-platform dynamic forms system that renders complex forms from JSON configurations. Features enterprise-grade Clean Architecture, SOLID principles, auto-save drafts, real-time validation, and virtual scrolling for 200+ fields.

Business Impact: Cross-platform implementations showcasing architecture portability across Swift and Kotlin
SwiftKotlinClean ArchitectureJSON SchemaMVVM