Luiz Antônio Neto

Luiz Antônio Neto

Mentor
Rising Codementor
US$8.00
For every 15 mins
ABOUT ME
Senior Full-Stack Engineer with strong proficiency in JavaScript
Senior Full-Stack Engineer with strong proficiency in JavaScript

Full Stack Engineer (Front-End Heavy) with 5+ years of experience building scalable, high-performance web and mobile applications used by millions of users. Specialized in React, Next.js, and modern JavaScript/TypeScript ecosystems, with strong expertise in GraphQL, API integrations, and performance optimization.

Proven track record of delivering end-to-end features, launching MVPs in weeks, and driving user growth through data-driven decisions (including campaigns with up to 40% conversion rates). Experienced in working across multiple domains such as fintech, retail, and analytics platforms in high-scale, production environments.

Portuguese, English
Brasilia (-03:00)
Joined January 2025
EXPERTISE
6 years experience
6 years experience
2 years experience
3 years experience
6 years experience
6 years experience
6 years experience

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE
GitHub
crowdform-project-app
This project is part of the Crowdform technical test.
TypeScript
1
0
fc-3.0-desafio-go
Dockerfile
0
0
EMPLOYMENTS
Senior React Developer
Abercrombie & Fitch
2023-06-01-Present
  • Developed and maintained multiple front-end applications for retail operations and Purchase Order (PO) management, enabling effic...
  • Developed and maintained multiple front-end applications for retail operations and Purchase Order (PO) management, enabling efficient visualization and control across distributed systems.
  • Built complex, scalable interfaces using React, Redux, GraphQL, and micro front-end architecture, integrating with REST/GraphQL APIs and event-driven systems (Kafka).
  • Contributed to a price view platform, delivering 10+ features including pricing validation rules, job management, product search, promo code management, and pricing analytics tools.
  • Designed and implemented internal and external platforms, including a Developer Portal and Franchise Portal, improving access to APIs, documentation, and operational workflows.
  • Collaborated across multiple teams and domains, working closely with backend engineers and business stakeholders to deliver high-impact, data-driven solutions.
  • Applied best practices in testing, code quality, and CI/CD using tools like Jest, React Testing Library, Storybook, GitLab, and Docker.
TypeScript
React
GraphQL
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TypeScript
React
GraphQL
Storybook
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Software Engineer
Coinbase
2025-04-01-2026-03-01
  • Worked on a US-based confidential fintech platform focused on crypto advocacy, serving 4M+ web users and millions across the ecos...
  • Worked on a US-based confidential fintech platform focused on crypto advocacy, serving 4M+ web users and millions across the ecosystem.
  • Developed scalable front-end features and pages using Next.js, GraphQL, and REST APIs, improving performance and user experience.
  • Built and optimized backend integrations using Redis for caching and advanced SQL queries (Prisma and raw SQL), enhancing data efficiency and response times.
  • Designed and launched in-app campaigns and upsell strategies, achieving up to 40% conversion rates and driving significant user engagement.
  • Implemented analytics and monitoring solutions using Mixpanel, Sentry, and Metabase, enabling data-driven decision-making and system reliability.
  • Participated in on-call rotations and Sentry grooming, ensuring system stability and rapid incident response in a high-scale production environment.
  • Developed and maintained background jobs and cron-based processes, supporting critical data workflows and system automation.
TypeScript
Sentry
GraphQL
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TypeScript
Sentry
GraphQL
Next.js
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CEO & Full-Stack Engineer
Delta Code
2023-01-01-2026-01-01
  • Founded and led the development of Delta Code, building a SaaS platform for scheduling, service management, customer operations, ...
  • Founded and led the development of Delta Code, building a SaaS platform for scheduling, service management, customer operations, and financial workflows for small businesses.
  • Architected and delivered scalable frontend applications using React, Next.js, and TypeScript, focusing on performance, maintainability, and reusable component-driven design systems.
  • Designed and implemented end-to-end product features, including scheduling flows, customer management, service planning, financial tracking, automation systems, and WhatsApp-based communication workflows.
  • Built and integrated full-stack solutions using GraphQL APIs, Node.js services, PostgreSQL databases, and cloud infrastructure on Amazon Web Services, ensuring scalability and operational reliability.
  • Led technical architecture, product strategy, and engineering workflows, defining development standards, CI/CD pipelines, repository structures, and scalable software design practices across projects.
  • Collaborated directly with clients and stakeholders to translate operational and business requirements into high-impact software solutions, continuously iterating on usability, automation, and business efficiency.
PostgreSQL
TypeScript
GraphQL
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PostgreSQL
TypeScript
GraphQL
Next.js
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PROJECTS
Carteira Global's HomepageView Project
2020
Designed a new and modern page that represented the company better. Designed all interfaces and implemented them with the appropriate tec...
Designed a new and modern page that represented the company better. Designed all interfaces and implemented them with the appropriate technologies. Used Figma to design the interface and React to build it. Used GraphQL, in the BFF layer, with Node.js to construct APIs and establish communication between the front-end and back-end. Used PostgresSQL as a database. Delivered the entire page in two weeks. Crafted code that meets the internal standards for style, maintainability, and best practices for a highscale web environment. Maintained and advocated for these standards through code review. Worked closely with clients and cross-functional departments to communicate project statuses and proposals. That specific project has been impacting our target public since it was deployed. Successfully conquered new clients, communicating to the right people with the right message.
Node.js
PostgreSQL
React
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Node.js
PostgreSQL
React
GraphQL
Figma
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Carteira Global's CompareView Project
2021
Created Carteira Global's Compare feature that allows users to compare different financial assets. Implemented feature to enable users to...
Created Carteira Global's Compare feature that allows users to compare different financial assets. Implemented feature to enable users to understand their differences in terms of profitability, equity evolution, monthly returns, volatility, risk, and consistency. Collaborate with Product Management and other stakeholders within Engineering to maintain a high bar for quality in a fast-paced, iterative environment. Designed the interface, React with TypeScript to construct it. Used Node.js to create back-end APIs. Used GraphQL to communicate to the back-end APIs. Worked with Python to create more complex APIs. Advocated for improvements to product quality, security, and performance. Communicated key project data to team members and building cohesion among teams. This project impacts many investors, among beginners and experts, by helping them how to know and analyze better assets information.
Python
Node.js
TypeScript
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Python
Node.js
TypeScript
React
GraphQL
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