Software Engineer

Matheus Muniz

Software engineer with 3 years of experience. I build technology solutions that impact the real world.

About Me

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.

Matheus Muniz

GitHub Contributions

 

Work Experience

westpoint
Software Engineer | May 2023 - PresentWestpoint Software Solutions
  • 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

freelancer
Software Development Contractor | October 2023 - March 2025Self Employed
  • Captured over 3,500 qualified leads for a financial services influencer within a 4 week campaign by developing a series of high conversion landing pages with Next.js, directly feeding the sales funnel for a high ticket product

  • Increased e-commerce conversion effectiveness by an estimated 10% by leading the end-to-end redesign of a live store with approximately 1,000 daily visitors, implementing a dynamic product filtering system and a streamlined admin interface that cut content update time in half

  • Secured client revenue and engagement by resolving critical email deliverability issues, correctly configuring DKIM/DMARC protocols to move 100% of transactional emails from spam to inbox

  • Slashed annual operating costs for a client by 40% by executing a full email hosting migration, providing a solution with 5x the storage capacity at a significantly lower price point

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

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

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Get in touch

If you are interested in a conversation, feel free to reach out to me through my Linkedin profile, or by sending an email through the form below. I'd love to get to know you and will get back to you as soon as possible!

Copyright © Matheus Muniz 2025
All rights Reserved