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I’m a full-stack developer with 2+ years of hands-on experience building React/React Native apps and Node.js APIs, plus work on production support and deployment in Linux environments. I enjoy taking ownership of real user issues, debugging with rigor, and shipping reliable features end-to-end.…

Matheus V. C. de Almeida

Web Developer, Full Stack Developer, Programmer, +4

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I’m a full-stack developer with 2+ years of hands-on experience building React/React Native apps and Node.js APIs, plus work on production support and deployment in Linux environments. I enjoy taking ownership of real user issues, debugging with rigor, and shipping reliable features end-to-end.…

Available to hire

I’m a full-stack developer with 2+ years of hands-on experience building React/React Native apps and Node.js APIs, plus work on production support and deployment in Linux environments. I enjoy taking ownership of real user issues, debugging with rigor, and shipping reliable features end-to-end.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Beginner

Language

English

Fluent

Portuguese

Fluent

Spanish; Castilian

Beginner

Work Experience

LLM Ops & GenAI Evaluation — Multimodal Evaluation & Pipeline Operations

January 1, 2024 - Present

Designed prompts and created evaluation rubrics to assess text, image, and multimodal outputs for accuracy, style, and safety. Curated datasets by cleaning, normalizing, and applying QA to maintain dataset consistency and documentation. Operated evaluation pipelines and performed iteration based on observed failure modes to improve quality.

Full-Stack Web Developer (Freelance)

January 1, 2024 - Present

Delivered full-stack web applications for clients, building front-end interfaces and back-end APIs. Implemented geolocation systems, user authentication flows, and payment integrations (including PayPal/Asaas mentioned in projects) within web application workflows. Focused on practical architecture decisions, debugging, validation, and reliable feature delivery.

Freelance Web Developer at Remote

January 1, 2024 - Present

Delivered full-stack applications for clients, from front-end UI to back-end APIs. Specialized in geolocation features, secure user authentication, and payment integrations.

Full-Stack Developer at Protec Sistemas

January 1, 2023 - January 1, 2025

Developed and maintained mobile and web product features using React Native, React, and Node.js. Investigated production issues reported by users, documented findings, and supported reliable resolution. Handled Linux deployment and operational support, and created internal technical guides for recurring workflows. Worked on authentication and API-driven features and collaborated to keep applications stable and maintainable.