Hi šŸ‘‹, I'm Mateus Junior I help businesses by validating, building, testing, and launching IT systems. I love to develop new projects and tend to get very involved. I like providing insightful feedback and ideas that shape the final product into a great solution.…

Mateus Junior

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Hi šŸ‘‹, I'm Mateus Junior I help businesses by validating, building, testing, and launching IT systems. I love to develop new projects and tend to get very involved. I like providing insightful feedback and ideas that shape the final product into a great solution.…

Available to hire

Hi šŸ‘‹, I’m Mateus Junior

I help businesses by validating, building, testing, and launching IT systems.

I love to develop new projects and tend to get very involved. I like providing insightful feedback and ideas that shape the final product into a great solution.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Language

English
Fluent
Portuguese
Fluent

Work Experience

Founding Engineer at Banani AI
March 20, 2026 - May 20, 2026
Founding engineer delivering full-stack features for a fast-paced AI design platform; redesigned agent to improve token usage, implemented system prompt improvements, optimized React Flow canvas, and resolved production issues across Sentry, Vercel, and Langfuse; built core features on React, Next.js, tRPC, Drizzle (Neon Postgres), Verce AI, Vercel Sandbox and Tailwind CSS.
Senior Software Engineer at Caresyntax
August 1, 2022 - January 20, 2026
Took ownership of full-stack feature delivery across a 20+ microservice landscape (Java Spring, TypeScript, Node, React, Python, ...); delivered new microservices from scratch with focus on architectural hardening, performance and reliability; worked on video, streaming and media features for cloud-based surgery support; built internal automation & compliance tools (TypeScript, Bash, Python) and CI/CD pipelines, leveraging Kubernetes, AWS and Terraform; wrote comprehensive technical documentation for onboarding; set up Grafana and Prometheus observability for real-time system performance tracking.
Frontend Software Engineer at NearSure - Golden Hippo
November 1, 2021 - August 20, 2022
Delivered high-converting web pages for a leading direct-to-consumer marketing client; engineered animations and interactive elements using SCSS and Angular; translated complex Figma designs into pixel-perfect, fully responsive implementations across browsers and devices; automated routine development tasks with Python and Shell scripts; integrated online store with ERP data via a Golang worker service and Python API.
Junior Frontend Software Engineer at Intmed Software Ltda ME (Health tech)
June 20, 2021 - November 20, 2021
Engineered and implemented new features for a health care Angular web application with a Django backend; ensured quality through comprehensive unit and end-to-end Cypress testing; architected and optimized AWS infrastructure deployments using Terraform and Bitbucket CI/CD pipelines; established and enforced code quality standards through rigorous code reviews, reducing defects and improving maintainability.
Software Engineer at Casa SĆ£o Mateus Avimentos LTDA ME
June 20, 2018 - June 20, 2021
Implemented a Golang API and worker services to send personalized messages on WhatsApp; created a React Next.js PWA solution for mobile inventory with ERP data integration via a new Golang worker service and Python API; deployed and maintained an online store using WooCommerce, PHP, TypeScript, Nginx and MySQL on a private VPS.

Education

BSc in Computer Science at Universidade Federal do Ceara
January 1, 2013 - January 1, 2015

Qualifications

Executive Coaching Certification
January 1, 2018 - January 1, 2018

Industry Experience

Software & Internet, Healthcare, Education, Professional Services, Media & Entertainment