Luiz Antônio Neto

Rising Codementor

US$8.00

For every 15 mins

ABOUT ME

Senior Full-Stack Engineer with strong proficiency in JavaScript

Senior Full-Stack Software Engineer with 6+ years of experience building scalable web and mobile applications across fintech, retail, and analytics domains. Specialized in React, Next.js, TypeScript, and modern full-stack architectures, with strong expertise in API integrations, GraphQL, PostgreSQL, cloud platforms, and performance optimization.

Proven track record of delivering end-to-end products and features in high-scale production environments, from architecture and database design to polished user experiences.

Experienced in launching MVPs, building fintech and AI-powered solutions, integrating third-party platforms such as payment and financial services APIs, and driving measurable business outcomes through data-driven product development. Skilled in leveraging modern LLMs to build AI assistants, workflow automation, and intelligent agent-based systems.

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

fc-3.0-desafio-go

Dockerfile

EMPLOYMENTS

Senior Full-Stack Software Engineer

Wealth Rewards

2026-04-01-2026-07-01

Developed a fintech platform that enables users to convert credit card rewards into investment products, building and maintaining...

Developed a fintech platform that enables users to convert credit card rewards into investment products, building and maintaining the application across the full stack.
Implemented secure integrations with Plaid for financial account aggregation and transaction data access, supporting a seamless user onboarding and account-linking experience.
Built payment and subscription workflows through Stripe, including customer management, billing, and financial transaction processing.
Designed and developed scalable backend services, database schemas, APIs, and business workflows using TypeScript, PostgreSQL, and cloud infrastructure.
Implemented compliance-related workflows, identity verification processes, secure authentication mechanisms, and financial data handling best practices.
Developed AI-powered features leveraging modern LLM APIs, including intelligent assistants, workflow automation, and financial guidance capabilities.
Owned the product lifecycle end-to-end, from architecture and database design to frontend implementation, deployment, monitoring, and ongoing feature delivery.
Collaborated with stakeholders to translate complex financial and investment requirements into intuitive user experiences and production-ready software.

PostgreSQL

TypeScript

Stripe

PostgreSQL

TypeScript

Stripe

Next.js

NestJS

GPT

Claude.ai

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 leveraging LLM APIs and agents.

TypeScript

Sentry

GraphQL

TypeScript

Sentry

GraphQL

Next.js

GPT

Claude.ai

Senior React Developer

Abercrombie & Fitch

2023-06-01-2026-03-01

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.
Created the entire UI and part of the back-end services of an AKS AI Assistant leveraging Next.js, Microsoft Azure, and Microsoft Foundry.

PostgreSQL

TypeScript

Docker

PostgreSQL

TypeScript

Docker

React

GraphQL

Next.js

Storybook

GPT

Claude.ai

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

Node.js

PostgreSQL

React

GraphQL

Figma

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

Python

Node.js

TypeScript

React

GraphQL