Izac Cavalheiro
Work History
23+ years of software engineering across fintech, hospitality, investment platforms, and entertainment — from freelance developer to senior engineer and engineering lead.
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Senior Software Engineer
Aug 2024 — Present Nowin progress…
- in progress…
- TypeScript
- Node.js
- NestJS
- React
- React Native
- Remix
- Nx
- Java
- AWS
- Cloudflare
- PostgreSQL
-
Senior Software Engineer
Optii Solutions Contractor via Luby
Aug 2023 — Aug 2024Developed an operations management SaaS platform for the hospitality industry — hotel room assignments, staff scheduling, and maintenance workflows.
- Led critical upgrade from React 17 to React 18, migrating all Class Components to Functional Components and enabling useTransition and useDeferredValue
- Applied SOLID principles building production solutions with TypeScript, React, NX, Ant Design, NestJS, and Apollo GraphQL
- TypeScript
- React
- Nx
- NestJS
- Apollo GraphQL
- Ant Design
- Styled Components
- Testing Library
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Software Engineering Lead
Nov 2021 — Aug 2023Led multidisciplinary engineering teams building a consumer credit platform serving tens of thousands of active customers at one of Brazil's leading fintechs.
- Implemented DORA metrics framework — doubled Deployment Frequency and halved Lead Time for Changes within 12 months
- Established code quality, testing, and continuous delivery standards adopted by multiple product squads — raised test coverage from near-zero to a sustained baseline
- Managed end-to-end development on AWS using Next.js, React, TypeScript, NestJS, Apollo GraphQL, Kafka, and PostgreSQL
- Next.js
- React
- TypeScript
- NestJS
- Apollo GraphQL
- MaterialUI
- Kafka
- PostgreSQL
- AWS
- Ruby
- Kotlin
- Python
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Software Engineering Manager
Mar 2021 — Nov 2021Managed multidisciplinary teams building and maintaining core website and product-oriented solutions for an educational financing platform.
- Led team through complete software development lifecycle including OKR definition and tracking, business process optimization, and career development planning
- Built and maintained React + TypeScript frontend with MaterialUI on GCP infrastructure
- PHP
- React
- TypeScript
- Webpack
- Jest
- MaterialUI
- PostgreSQL
- GCP
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Frontend Engineer Specialist
Grupo Ultra — KM de Vantagens Consultant via VocêQPad @ KMV
Jan 2020 — Mar 2021Consultant embedded within a major payment and loyalty platform. Architected and built a white-label food delivery application as a micro-frontend solution integrated into the host platform.
- Designed scalable micro-frontend architecture using TypeScript, React, and Redux, deployed on Azure
- Delivered reusable components and patterns adopted across multiple brand implementations without forking the codebase
- TypeScript
- React
- Redux
- Azure
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Lead Frontend Software Engineer
Jan 2019 — Oct 2019Led the migration from a monolithic frontend to domain-specific microservices and micro-frontends at Brazil's largest investment platform.
- Established micro-frontend patterns and practices adopted company-wide after leading the monolith-to-microservices migration
- Coordinated with backend teams to design efficient API contracts and integration strategies across microservices
- JavaScript
- TypeScript
- React
- Redux
- Node.js
- Webpack
- RollUp
- Styled Components
- SASS
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Senior Frontend Software Engineer
Easynvest (now NuInvest) Consultant via Iteris
Sep 2018 — Jan 2019Built the core website, landing pages, APIs, and a reusable UI component library for a leading investment platform.
- Created a reusable component library ensuring visual and behavioral consistency across all digital properties
- Built landing page APIs and integrated frontend with investment data services on AWS
- JavaScript
- TypeScript
- React
- Redux
- Next.js
- MaterialUI
- Node.js
- AWS
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Software Engineering Consultant / Tech Lead
Natura, Ambev & Banco Votorantim via Accenture
Jun 2017 — Sep 2018Tech lead and consultant embedded across three enterprise clients, fostering engineering culture and building scalable solutions for consumer goods, beverages, and financial services.
- Mentored junior and mid-level developers on modern frontend development practices across client teams
- Built enterprise solutions using Node, Express, TypeScript, React, Apollo GraphQL, PostgreSQL, MongoDB, and Scylla
- Node.js
- Express
- TypeScript
- React
- Redux
- Apollo GraphQL
- AngularJS
- PostgreSQL
- MongoDB
- Scylla
-
Lead Software Engineer
VirtualNet
Jan 2015 — Jun 2017Led the engineering team building localized and internationalized websites and CMS solutions for Sony Pictures and Walt Disney Latin America (Columbia Pictures and Buena Vista).
- Led a team delivering entertainment industry solutions supporting multiple languages and regions for major Hollywood studios
- Managed full-stack development across Python, JavaScript, AngularJS, Laravel, WordPress, and MySQL
- Python
- HTML5
- SASS
- JavaScript
- AngularJS
- Laravel
- CodeIgniter
- WordPress
- MySQL
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Founder / Full Stack Developer
i9Mais
Jan 2007 — Dec 2014Founded a software development consultancy providing custom web applications, e-commerce platforms, and digital solutions for advertising and marketing firms across São Paulo state.
- Delivered custom web applications and e-commerce platforms for small and medium-sized businesses across São Paulo
- Python
- PHP
- Flash
- ActionScript
- WordPress
- Zend
- MySQL
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Web Developer
IC Dev Freelancer
Jun 2002 — Jan 2007Started career as a freelance web developer building custom web applications for small and medium businesses across the Campinas region.
- Built foundation in web development — Flash, ActionScript, JavaScript, PHP, ASP — and client communication skills
- Flash
- ActionScript
- JavaScript
- PHP
- ASP
- HTML