About Me
Software Engineer with 3 years of experience in software development. I build the backend systems that drive business results. My focus is on architecting robust, scalable, and event-driven applications on AWS that directly impact revenue, efficiency, and system reliability. My core expertise lies in the serverless ecosystem, leveraging tools like AWS Lambda, SQS, API Gateway, and CDK to create resilient and cost-effective solutions. I have a proven track record of translating business needs into technical reality, I'm deeply proficient in TypeScript/Node.js and skilled in both relational (PostgreSQL) and NoSQL (DynamoDB) databases. While my professional experience has been centered on TypeScript, my approach has always been backend-first. I design systems by focusing on clean API contracts, efficient data modeling, and long-term maintainability, principles that are paramount in enterprise environments. My hands-on experience with client-side applications (React, Next.js) gives me a unique advantage in designing APIs that are not just powerful, but practical and easy to consume.
GitHub Contributions
Work Experience
Eliminated API latency for end users by architecting an asynchronous transactional email system (API Gateway, SQS, Lambda), improving API response times by an estimated 70% and decoupling core services for enhanced long term maintainability
Unlocked the primary revenue stream for a mobile application by architecting and deploying a serverless webhook integration (Lambda, API Gateway) for App Store and Google Play, successfully processing 100% of auto renewable subscription payments from launch
Reduced infrastructure costs by over 15% and reduced deployment time by implementing Infrastructure as Code with AWS CDK, automating the provisioning of all serverless resources and eliminating manual configuration errors
Improved system uptime by proactively identifying and resolving production incidents, reducing the Mean Time to Resolution (MTTR) for critical alerts by an estimated 30% using a combination of CloudWatch, Sentry, and New Relic
Eliminated a critical access control vulnerability in a GraphQL API, protecting sensitive user data and directly resulting in a passing score on the client's annual penetration test
Built and deployed a fully automated free trial lifecycle management system (AWS EventBridge, AWS Lambda), which prevented revenue loss by ensuring 100% accuracy in subscription status transitions and improved user retention through pre expiry notifications
Architected a real-time email deliverability monitoring system that cut failure investigation time from 20 minutes to seconds, allowing the team to instantly address issues that could impact customer communication and sales
Mitigated risk of catastrophic data loss by implementing an automated GitHub repository backup to S3, ensuring 100% disaster recovery capability for the company's most critical code assets
Reduced API response times by 97.5% (from 20s to 500ms) by re-architecting data access patterns with Hibernate lazy loading in a Java Quarkus environment, eliminating database bottlenecks
Architected a bulk email delivery system, using message brokers (Kafka) and microservices (Java and Quarkus) to guarantee fault tolerance and scalability in the proposed architecture
Reduced integration time between frontend and backend teams by adopting a contract-first development workflow using OpenAPI and Swagger to ensure seamless collaboration and predictable delivery
Live Projects
As a developer who is highly interested in providing measurable and genuine value to others, I've built a number of solutions for clients. In particular, my skills with frontend development have enabled me to build responsive and user friendly websites, and my knowledge in web development has helped me build and deploy websites to live environments
Woom
End-to-end redesign of an active ecommerce store (approximately 1,000 daily visitors). The redesign was key to enhancing user engagement and operational efficiency, boosting conversion rates and revenue generation
title
"data.navarro.text"
data.navarro.occupation
"data.pontoads.text"
data.pontoads.occupation
"data.bluebell.text"
data.bluebell.occupation
title
projects.title
projects.resumerefine.name
projects.resumerefine.bulletPoints.0
projects.resumerefine.bulletPoints.1
projects.resumerefine.bulletPoints.2
projects.resumerefine.bulletPoints.3
projects.forexpro.name
projects.forexpro.bulletPoints.0
projects.forexpro.bulletPoints.1
projects.forexpro.bulletPoints.2
projects.forexpro.bulletPoints.3
Copyright © Matheus Muniz 2025
All rights Reserved