about

Hello, I am Igor Morais, a Full Stack Engineer from São Paulo, Brazil, with over 15 years of experience.

I started my professional journey as a Mobile Engineer, where I had the opportunity to contribute to some challenging projects for notable companies such as Apple and Samsung. However, driven by my curiosity about software development, I decided to explore web development. Following six years of experience as a Mobile Engineer, I made the transition to become a Full Stack Engineer.

I have been all about Ruby, Elixir, JavaScript, and TypeScript for the past few years, which have become my primary programming languages, and I have accumulated significant experience with different technologies such as React, React Native, Next Js, Nest Js, Phoenix, and Ruby on Rails. Moreover, I have experience with SQL databases such as SQLite, MySQL, and PostgreSQL and NoSQL databases such as MongoDB, Azure Cosmos DB, and Amazon DynamoDB. In the domain of cloud computing, I have experience with Microsoft Azure and Amazon Web Services, along with tools such as Docker, Pulumi, and Terraform.

Currently, I am dedicated to the study of dev ops, security, and cloud computing :)

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fact

years experience15
projects worked48
courses taken64
pets41
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stack

java script
type script
ruby
elixir
swift
kotlin
dart
python
react
next js
nest js
node js
ruby on rails
phoenix
pulumi
terraform
microsoft azure
amazon web services
ios
android
flutter
react native
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experience

Fev 2025 - Current

Maquinalista

Principal Software Engineer

As a Principal Software Engineer, I drive and define the technical vision and architecture for large scale platforms, including design choices, technology decisions, and long term evolution plans. Additionally, I lead the implementation of complex solutions, reviewing code and designs to ensure strong performance, easy maintainability, and aligned with engineering standards.

Also, I lead incident resolution for complex technical problems, providing guidance on debugging, performance enhancements, and ensuring platform reliability.

In addition, I collaborate closely with design, product, and other teams to translate business requirements into clear technical plans.

Achievements

Built a new platform from scratch with a small team of engineers, launching it within four months. The platform was built with a modern architecture, using Next Js for the web application and React Native for the mobile application. The core service uses Nest Js running on Bun, supported by queues and serverless functions for handle asynchronous and background tasks. Continuous integration and delivery pipelines orchestrate the build and deployment of every component. We provision the infrastructure on Amazon Web Services using Pulumi (IaC) to orchestrate the cloud resources.

amazon certificate manageramazon cloud watchamazon ec2amazon ecramazon ecsamazon elbamazon iamamazon route 53amazon s3amazon secrets managerbunclean architecturecode reviewcssdockerelixiremotionex unitfluxgitgit flowgithubgithub actionshtmljava scriptjestkanbanmongo dbmongoosenest jsnext jsnode jsphoenixpulumipythonreactreact queryrestsentrytailwindtype scriptunit testvitezapzigzustand
May 2024 - Jan 2025

Utility

Sr Full Stack Engineer

As a Sr Full Stack Engineer, I design, develop, and maintain services and applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the services and applications, ensuring it runs smoothly and meets the required expectations.

In addition, I continuously monitor systems to effectively track and evaluate the health, availability, and performance of the services and applications.

Achievements

I performed an extensive refactor in a Next application, focusing on component reusability and optimizing the rendering performance. I also addressed various linting issues. As a result of these changes, the application achieved higher stability, improved reliability, and significantly faster rendering performance.

amazon cloud watchamazon s3avoclean architecturecode reviewcsscss modulesdockerfluxgitgit flowgithubgithub actionshtmljava scriptjestkanbanmysqlnest jsnext jsnode jspostgre sqlpreact jsprismareactreact queryrestrspecrubyruby on railsscrumsentrysidekiqsqltailwindtype scriptunit testvitezustand
Oct 2023 - Mar 2024

Coinbase

Sr Observability Engineer

As a Sr Observability Engineer, I design, develop, and maintain tools. This involves collecting telemetry such as logs, traces, metrics, and events from services, applications, and infrastructure. I transform this into alerts, dashboards, and visualizations that provide to the teams with real time visibility into reliability and performance, while also guiding what should be measured.

Also, I contribute to troubleshooting issues.

Achievements

As part of a research project, I have built a tool that automates some code maintenance. The tool supports Node applications written in Java Script or Type Script, it executes code transformations by manipulating the Abstract Syntax Tree.

amazon cloud watchapollo graphqlastargo cdcodemodcode reviewcode shiftcssdatadogdockerfluxgitgit flowgithubgithub actionsgographqlhtmljava scriptjestkanbankibanalinarianew relicnext jsnode jspythonreactrestsentrytype scriptunit test
Oct 2023 - Mar 2024

X-Team

Sr Software Engineer

X-Team is a global company that provides on demand, high quality software development teams to help tech companies scale their projects. They connect remote software engineers from around the world with companies looking for additional technical talent, ensuring a strong collaborative remote work environment.

Jan 2023 - Sep 2023

eVisit

Sr Back End Engineer

As a Sr Back End Engineer, I design, develop, and maintain services. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the services, ensuring it runs smoothly and meets the required expectations.

In addition, I continuously monitor systems to effectively track and evaluate the health, availability, and performance of the services.

Achievements

I have implemented a monitoring system that monitors all software components of the services, including queues, gateways, databases, and a serverless application. Additionally, I have created alerts, monitors, and dashboards to effectively track and evaluate the health, availability, and performance of the services.

In strict time constraints, I have managed to design and develop an internal tool that provides valuable insights to the team. This tool consists of two core components a front end application and a back end serverless application.

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May 2022 - Jan 2023

Greenlight

Sr Back End Engineer

As a Sr Back End Engineer, I design, develop, and maintain services. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the services, ensuring it runs smoothly and meets the required expectations.

In addition, I continuously monitor systems to effectively track and evaluate the health, availability, and performance of the services.

Achievements

In order to support the implementation of a new major feature. I have developed a couple of small independent services, each responsible for a specific domain, that communicates with each other through gRPC. There is a specific service that serves as a gateway that delivers content through GraphQL. This service also performs functions such as route management, protocol translation, authentication and authorization management, request transformation, response aggregation and composition, rate limit, and cache management. It also provides analytics and monitoring support to monitor the usage of the service.

amazon dynamo dbapollo graphqlargo cdclean architecturecode reviewdatadogdockergitgit flowgithubgithub actionsgraphqlgrpcjestkanbankuberneteslocal stacknode jsrestscrumtype scriptunit test
May 2021 - May 2022

Quantum Leap

Tech Lead

As a Tech Lead, I provide technical guidance and expertise to the development team, assisting in critical tasks such as making technical decisions, designing project architecture, and selecting the most appropriate technologies.

Also, I design, develop, and maintain services and applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the services and applications, ensuring it runs smoothly and meets the required expectations.

In addition, I publish applications on both the App Store and Google Play and continuously monitor systems to effectively track and evaluate the health, availability, and performance of the services and applications.

Achievements

As part of a research project, I have designed and developed an application that transmits data through high frequency audio beyond the range of human hearing. Any device with a speaker or microphone can receive and transmit data through the applications.

I have developed a service that provides support for an IoT devices. The communication is achieved through a queue, dealing with a massive volume of requests every day. In addition, the service provides a REST API that is consumed by a mobile application.

amazon api gatewayamazon cdkamazon cloud watchamazon cognitoamazon ec2amazon ecramazon iotamazon lambdaamazon rdsamazon route 53amazon s3amazon sqsandroidclean architecturecode reviewcssdartdjangodockerelixiretsex unitfluttergitgit flowgithubgithub actionshtmliosjestkanbannest jsnext jsnode jsphoenixpostgre sqlpythonreactrestsqlswiftterraformtype scriptunit testwatch os
Mar 2020 - May 2021

Non Disclosure

Sr Mobile Engineer

As a Sr Mobile Engineer, I design, develop, and support mobile applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the applications, ensuring it runs smoothly and meets the required expectations.

Achievements

I contributed to the development of an application with advanced features, specifically the handling of gestures such as tap, pan, pinch, and rotate, and applying them instantly to objects on the canvas while also ensuring a responsive layout to support different screen sizes for iOS devices. This project is essential to the company core activities.

code reviewcore datagitgit flowgithubgithub actionsiosipad osmvvmnimblequickscrumswiftswift uiunit testviper
Mar 2018 - Mar 2020

Cielo

Tech Lead

As a Tech Lead, I provide technical guidance and expertise to the development team, assisting in critical tasks such as making technical decisions, designing project architecture, and selecting the most appropriate technologies.

Also, I design, develop, and maintain services. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the services, ensuring it runs smoothly and meets the required expectations.

In addition, I continuously monitor systems to effectively track and evaluate the health, availability, and performance of the services.

Achievements

I have designed and developed a web application that allows customers to sign up for Tv plans and packages. Additionally, customers can manage their accounts, allowing them to change their plans and packages and update their account information and payment method. This application generates $4 million in sales monthly within the first few months since its launch.

I contributed to the development of a payment service that enables effortless integration for partners and provides support for multiple payment options such as Pix, debit card, and credit card. Additionally, there is a widget component available as part of this solution, which is designed to be compatible with any modern front end framework, such as Vue, React, and Svelte. The leading telecom companies in Brazil utilize this service for processes their payment.

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May 2018 - Aug 2019

Brave

Tech Lead

As a Tech Lead, I provide technical guidance and expertise to the development team, assisting in critical tasks such as making technical decisions, designing project architecture, and selecting the most appropriate technologies.

Also, I design, develop, and maintain services and applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the services and applications, ensuring it runs smoothly and meets the required expectations.

In addition, I publish applications on both the App Store and Google Play and continuously monitor systems to effectively track and evaluate the health, availability, and performance of the services and applications.

Achievements

Within strict time constraints, I have designed and developed a back office application to support a transportation platform. This application comprises three main components, a front end application and two back end applications, specifically a GraphQL service and a WebSocket service.

I created a real time location service where a mobile device sends its location to the service through a web socket which then broadcasts to all subscribed to the channel. This service was an essential component of a drive sharing platform, ensuring continuous monitoring of the device location.

active recordamazon cloud frontamazon cloud watchamazon ec2amazon elastic beanstalkamazon rdsamazon route 53amazon s3androidapollo graphqlazure app serviceazure content delivery networkazure dnsazure monitorazure sql databaseazure storageazure virtual machinescode reviewcssfluxgitgit flowgithubgraphqlhtmliosjava scriptjestkanbanmongo dbmysqlnode jspythonreactreact nativereduxrestrspecrubyruby on railssqlstyled componentsunit testweb socket
Jul 2016 - Mar 2018

Bravi

Sr Full Stack Engineer

As a Sr Full Stack Engineer, I design, develop, and maintain services and applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the services and applications, ensuring it runs smoothly and meets the required expectations.

In addition, I publish applications on both the App Store and Google Play and continuously monitor systems to effectively track and evaluate the health, availability, and performance of the services and applications.

Achievements

I have refactored a large codebase for an Android application by transitioning the code from Java to Kotlin and implementing several architectural improvements, such as caching, resource optimization, background processing, asynchronous operations, and modular architecture.

I have actively contributed to the development of a game application that has achieved significant success, with over 2 million downloads on both iOS and Android platforms. This application has been created in collaboration with Cambridge University to engage students in an entertaining approach to learning English.

androidapollo graphqlcode reviewcore datacssdockerdocker composedocker hubfastlanefluxgitgit flowgitlabgitlab ci cdgraphqlhtmliosjavajava scriptjestjunitkanbankotlinmobxmvcmvpmvvmnode jsobjective cpostgre sqlreactreact nativerealmreduxrestscrumsqlswiftunit testxc test
May 2016 - Mar 2018

Udacity

Project Reviewer

As a Project Reviewer, I review student project submissions, striving to give actionable and helpful feedback. The areas in which I provide project reviews include iOS and Android development.

androidiosjavakotlinobjective cswift
Feb 2016 - Jul 2016

Epitrack

Sr Mobile Engineer

As a Sr Mobile Engineer, I design, develop, and support mobile applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the applications, ensuring it runs smoothly and meets the required expectations.

In addition, I publish applications on both the App Store and Google Play.

Achievements

I have designed and developed an application to identify outbreaks and epidemics based on crowdsourcing. Users can report how they are feeling daily, contributing to participatory surveillance. This project was awarded for best mobile government service in the health category during the World Government Summit 2017 in Dubai.

androidcore datafastlanegitgit flowgithubiosjavajunitmvcmvpobjective cscrumsqliteswiftunit testxc test
Aug 2015 - Feb 2016

Mobilicidade

Sr Mobile Engineer

As a Sr Mobile Engineer, I design, develop, and support mobile applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the applications, ensuring it runs smoothly and meets the required expectations.

In addition, I publish applications on both the App Store and Google Play.

Achievements

I have completed a project with a strict deadline where I rewrote from scratch an application that allows users to rent bikes across multiple cities. The requirement was to develop two native applications for the iOS and Android platforms using Java and Swift, respectively.

androidbitbucketgitiosjavajunitkanbanmvcmvpobjective cswiftunit testxc test
Apr 2015 - Aug 2015

Epitrack

Mobile Engineer

As a Mobile Engineer, I design, develop, and support mobile applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the applications, ensuring it runs smoothly and meets the required expectations.

In addition, I publish applications on both the App Store and Google Play.

Achievements

I have designed and developed an application to identify outbreaks and epidemics based on crowdsourcing. Users can report how they are feeling daily, contributing to participatory surveillance. This project was awarded for best mobile government service in the health category during the World Government Summit 2017 in Dubai.

androidcore datafastlanegitgit flowgithubiosjavajunitmvcmvpobjective cscrumsqliteswiftunit testxc test
Apr 2012 - Apr 2015

Cesar

Jr Mobile Engineer

As a Jr Mobile Engineer, I design, develop, and support mobile applications. This involves writing code that is clean, easy to maintain, and of high quality. Additionally, I actively contribute to enhancing the testing process by developing test automation, reducing the time to the identification and resolution of issues.

Also, I identify and address any software bugs or issues that may occur in the applications, ensuring it runs smoothly and meets the required expectations.

Achievements

I had the opportunity to develop the first NFC application from Google Play that enables automated tasks through NFC tags. The application has been released together with Samsung Galaxy S3.

I made significant contributions to the design and development of an Android library. The library consists of a set of 3D components, including components like a list and gallery. This library was utilized in a couple of applications developed by Samsung.

I have solved some challenging problems, including developing an edge detection algorithm, developing a hough transform algorithm, designing and implementing an efficient path search algorithm, and determining precise indoor locations using WiFi signals.

I actively contributed to the development of the official application for the Olympic Games Rio 2016 for the iOS platform.

androidcode reviewgitgit flowgitlabiosjavajenkinsjunitmvcobjective copen cvscrumsqlitesvnunit testxc test
Aug 2011 - Apr 2012

Urbana

Jr Support Analyst

As a Jr Support Analyst, I work closely with users to resolve technical issues and provide solutions to problems. This involves analyzing and troubleshooting issues in the software systems, identifying root causes, and reporting to the responsible teams.

My objective is to provide timely and effective support to ensure that the software systems meet the needs of users. This involves maintaining a high level of responsiveness and communication to keep users informed of the progress of their support tickets and providing updates on the resolution of their issues.

In summary, I play a critical role in ensuring that the software systems are running smoothly and that users have the support they need to perform their job functions effectively.

oracle databasesql
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education

Mar 2024 - Oct 2025

Faculdade De Governança, Engenharia E Educação

Astronomy, Specialization Degree

Mar 2024 - Oct 2025

Faculdade De Governança, Engenharia E Educação

Fundamentals, Principles And Applications In Data Science, Machine Learning And Artificial Intelligence, Specialization Degree

Mar 2023 - Mar 2025

Harvard University

Data Science, Professional Degree

The program covers a range of fundamental concepts in data science, starting with the basics of programming and progressing to more advanced topics, including probability, visualization, statistical inference, statistical modeling, linear regression, and machine learning.

Each course within the program introduces exciting case studies. These case studies explore diverse subjects, including movie recommendation, crime rates, election forecasting, and trends in world health and economics.

Mar 2014 - Mar 2016

Cesar School

Software Engineering, Master Degree

The program combines theoretical knowledge with practical application, with a particular focus on projects that directly address the needs of the market.

The main focus of my research was on exploring how technology can be a valuable tool in the treatment of children diagnosed with an autism spectrum disorder. A significant aspect of my research was the development and implementation of a software application specifically for children with autism spectrum disorder. The application was designed to target critical areas such as cognitive enhancement and communication improvement.

Jan 2009 - Dec 2012

Maurício De Nassau

Computer Science, Bachelor Degree

The program is designed to explore computational techniques, methodologies, and tools. It encompasses diverse technology areas, including algorithms, compilers, programming languages, operating systems, computer graphics, computer networks, computer architecture, databases, web development, mobile development, distributed systems, information systems, and artificial intelligence.

In essence, the program provides a comprehensive learning experience in computer science, providing the necessary knowledge to design and develop solutions across diverse technology areas.

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course

Nov 2023

Amazon Solutions Architect Associate

Udemy

Sep 2023

Amazon Cloud Practitioner

Udemy

Aug 2023

Microsoft Azure From Zero To Hero

Udemy

next chapter

certification

Oct 2023 - Oct 2026

Amazon Solutions Architect Associate

LZ8S5Y2K0B1EQFWM

Sep 2023 - Sep 2026

Amazon Cloud Practitioner

6B9LKS5K4MQE1WGD

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project

,

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contact

Stay in touch
igor@hollowsoft.com
+55 11 915 775 634

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São Paulo
São Paulo
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