Renan Machado Pinho — Senior Full Stack Engineer
Senior Full Stack Engineer
About Me
I'm a passionate Full-Stack Software Engineer with 5+ years of experience designing and implementing robust systems for the payment and fintech sector. Proven track record delivering high-performance backend services, AI integrations, cloud-native architectures, and modern frontend interfaces.
I thrive at the intersection of event-driven microservices, RAG/LLM pipelines, and legacy system modernization using SOLID principles and Clean Architecture.
Backend Development
Java (Spring Boot, Quarkus), Python (FastAPI, Django REST), Node.js (NestJS, Express), Golang
AI / ML
RAG strategies, LangChain, LLM integration (Claude, OpenAI, Grok), vector databases, AI Agents
Frontend Development
React, Next.js, Tailwind, Material UI, shadcn/ui, Zustand
Cloud & DevOps
AWS (Lambda, ECS, S3, DynamoDB, API Gateway), Azure DevOps, Docker, Kubernetes, Terraform, Serverless Framework
Databases & Messaging
PostgreSQL, MongoDB, Oracle, DynamoDB, Kafka, RabbitMQ, AWS SQS
Pricing
Daily
USD 250
for any task.
Full 8-hour working session.
Progress updates every 15 minutes with live demos.
Ideal for quick fixes, small features, and specific requests.
Payment: 60% before start, 40% on delivery.
Unused time is refunded — up to 35% back if tasks wrap early.
Crypto payments welcome (any token) — 5% off.
Monthly
USD 5000
to make your project live.
Every task delivered within a 48-hour window.
Sick days? You get that time back, no questions asked.
Built for shipping products from zero to production.
Payment: 40% upfront, 60% at the end of the month.
Comfortable working alongside existing teams.
Idle days are refunded — up to 35% back for unused time.
Crypto payments welcome (any token) — 5% off.
I am also available for hiring.
Technical Skills
Backend
AI / ML
Cloud
Architecture & Design
Also working with
Specializing in building scalable microservices and event-driven architectures
What I'm Building
Linkedify
Alongside client and full-time work, I founded and run Linkedify, an AI tool that writes, schedules, and publishes LinkedIn content on autopilot.
Professional content generation, automated scheduling, and engagement tracking — built solo end to end: product, backend, and the AI content pipeline.
Visit LinkedifyLinkedify Team
Marketing
The secret to our LinkedIn growth? Consistency. We post every weekday, same time — and engagement tripled in 3 months.
Career Journey
5+ years of experience building scalable solutions across diverse industries
Software Engineer
Contributing to a large-scale pricing system bridging legacy COBOL/mainframe environments with modern Java microservices.
Engineered robust file processing pipelines for high-volume structured data migrations, ensuring data integrity across the pricing lifecycle.
Built React.js frontend interfaces enabling internal teams to manage and monitor dealer file operations with greater visibility.
Leveraged AWS (S3, Lambda) for scalable, cloud-native file ingestion and processing workflows.
Software Engineer
Part of the Anti-Fraud team at one of Brazil's leading digital banks, building high-availability systems to detect and prevent fraudulent transactions in real time.
Played a key role in delivering MVP 1 of the account and block management system, enabling fraud operations at scale.
Developed and maintained backend services using Java and Spring Framework for fraud detection rules and transaction monitoring pipelines.
Senior Full Stack Engineer
Architected and developed RAG solutions using LangChain with Python and LLMs (Anthropic and OpenAI models).
Built new interfaces for internal systems using Material UI 7 with Next.js 15 and Zustand for state management.
Developed event-driven applications using Serverless Node.js and AWS.
Collaborated with PO, Tech Lead, and managers to define tasks and guidelines for the development team.
Senior Full Stack Engineer
Updated the user onboarding flow to support member invitation.
Created seeding scripts to streamline local development for engineers.
Mocked integrations with third-party tools including Supabase, Sentry, and Slack.
Software Engineer
Improved performance of 12+ microservices, enabling processing of hundreds of thousands of automatic debits per minute.
Designed a DynamoDB table purging process, reducing AWS costs by 10%.
Increased ECS application performance by 55% by refining auto-scaling policies.
Optimized data integration with the company's data mesh for improved analytics.
Migrated debit processing from AWS Lambda to Python, enhancing maintainability.
Software Engineer
Built a messaging system using Java, Kafka, and RabbitMQ capable of processing 40,000+ requests per minute.
Implemented a retry mechanism for transactional email and SMS notifications.
Designed an event-driven system to track real-time operations and improve observability.
Delivered hundreds of automated tests using JUnit and Mockito ensuring code quality.
Participated in MVP 1 delivery for credit lines of global cards.
Authored technical documentation and introduced branch/release models for the team.
Full Stack Software Engineer
Developed backend applications using Java 11, Spring Boot, JSF, and Oracle Database.
Fixed key bugs, increasing sales productivity by 10%.
Optimized memory consumption for large-scale report generation, reducing overhead by 50%.
Created a logistics QR Code and barcode printing service for internal operations.
Full Stack Software Engineer
Developed a hearing aid sales platform using React and Node.js.
Deployed the company's first MVPs for internal and external platforms.
Integrated Google Analytics and ad campaigns, growing the platform to 10,000+ users.
Led deployment of MongoDB solutions for scalable data management.
Senior Full Stack Software Engineer
Developed a fitness center application using Next.js and Supabase for workout management, scheduling, and student performance tracking.
Contributed to an e-learning platform with AWS and Java, facilitating content distribution to thousands of users.
Built full-stack CRM applications using TypeScript (Node.js) for small local businesses over 2+ years.
Implemented deployment pipelines for frontend applications with optimized CI/CD configuration.
Trainee
Worked on the maintenance of e-commerce applications created in WordPress.
Maintained WordPress plugins and supported bug fixes.
Contributed to day-to-day platform stability and team delivery.
Key Technologies & Expertise
Technical Insights
I share my thoughts on software architecture, cloud technologies, and best practices in modern full-stack development. Dive into practical tutorials, deep dives, and lessons learned from building scalable systems.
Architecture
System design & patterns
Cloud Native
AWS, Docker, Kubernetes
Best Practices
Clean code & scalability
Get In Touch
Let's build something amazing together
© 2026 Renan Machado Pinho. Built with React, TypeScript & Framer Motion.