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Matheus Régis

@matheusrgis

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Senior Software Engineer specializing in scalable Node.js/TypeScript backends for high-growth fintech platforms.

Brazil

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What I'm looking for

I seek backend/cloud roles where I can solve performance and security challenges, build resilient systems, and scale products in collaborative, growth-oriented teams.

I am a Senior Software Engineer with 6+ years building scalable backend systems in the Node.js/TypeScript ecosystem, focused on performance, concurrency, and security. I have led critical integrations with major financial APIs and helped scale platforms from hundreds of thousands to millions of users while maintaining reliability.

My hands-on achievements include redesigning large-scale import pipelines to run in parallel, resolving MongoDB race conditions, stabilizing RabbitMQ in multi-pod deployments, and closing a critical Azure Blob Storage security vulnerability. I automate CI/CD and infrastructure as code, and I deliver pragmatic solutions that reduce costs and prevent production incidents.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Everon

Oct 2024 - Present (1 year 5 months)

Fixed critical production issues at a GS1 Brazil deployment by implementing parallel processing for large imports (10k+ rows), resolving MongoDB race conditions, restoring RabbitMQ reliability, and closing an Azure Blob Storage security vulnerability, improving processing latency from minutes to seconds and ensuring data integrity.

NestJS TypeScript Azure RabbitMQ MongoDB Kubernetes Terraform

Senior Software Engineer

Velotax

Dec 2021 - Jun 2024 (2 years 6 months)

Built end-to-end integrations with Binance, Foxbit and Mercadobitcoin and implemented payment flows (StarkBank, Pagar.me), restructured heavy-data pipelines to handle 20k+ monthly transactions and helped scale the platform from 200k to millions of users while maintaining stability.

NestJS TypeScript AWS Lambda MongoDB Binance Serverless

Fullstack Developer

Bolsapp

Apr 2021 - Dec 2021 (8 months)

Contributed to the MVP of a tax declaration platform by building backend and frontend features, including a tax calculator integrated with B3, Binance, Foxbit and Mercadobitcoin to automate tax calculations for individual and corporate users.

MongoDB Next.js NestJS API Development Backend Integrations

Backend Developer

One Immigration Consulting

Sep 2020 - Mar 2021 (6 months)

Developed Node.js/Express APIs and payment integration with Stripe for an immigration facilitation SaaS, and implemented web scraping automation with Puppeteer and Cheerio to collect data from government portals.