AVAILABLE FOR NEW PROJECTS / Software Engineer
I create digital products such as systems, online stores, landing pages, websites, and apps, with a focus on experiences centered on people.
Calil Sousa Mattos
Software Engineer
SPECIALTIES
A rigorous approach and architectures guided by international standards for development, stability, and security.
It works by developing the interface (application screens), all the high-level logic of the application such as login, local data persistence, makes access to the endpoints that the webservice provides and shows everything to the user.
It works in the back-end in charge of planning, building, implementing and maintaining the technological structure that constitutes the basis of a website. Without this work, nothing on the internet can work, since everything is integrated into the mechanism connected to the servers.
Integrates security practices (Security) into software development (Development) and IT operations (Operations). Its mission is to ensure that security is incorporated into all phases of the software development life cycle (SDLC), promoting a collaborative approach to delivering robust, efficient systems that are protected against cyber threats.
Creation of Systems and ERP's, fully customized. It assists the company's manager in improving internal processes and integrating the activities of different sectors, such as sales, finance, inventory, and human resources. The result is access to valuable insights that contribute to sound decision-making.
It programs, codes, and tests on Android and iOS platforms. Performs the maintenance of the systems, making any necessary corrections, in order to meet the needs of the users. Develops assembly, debugging and testing of programs, performing maintenance services on the programs already developed.
UI Design has as its main focus the interface of a particular application or website, UX Design observes this and other aspects, ranging from the path that a user takes to reach their final goal to previous experiences that a person has had with that product or service, which can have an impact.
Positioning websites through certain keywords on the first page of search engines (Google, Bing, Yahoo, etc.), applying complex and feasible strategies to adapt to search engine algorithms.
HTML, version 5, is a hypertext markup language for presenting and structuring content on the web.
With CSS, version 3. One can create unique styles for their web projects by changing various design aspects in the page layout.
JavaScript is a structured, high-level scripted interpreted programming language with weak, multi-paradigm dynamic typing. Along with HTML and CSS, JavaScript is one of the three main technologies of the World Wide Web.
TypeScript is an open-source programming language developed by Microsoft. It is a strict syntactic superset of JavaScript and adds optional static typing to the language. Types provide a way to describe the shape of an object, providing better documentation and allowing TypeScript to validate that your code is working correctly.
Next.js is an open-source React front-end development web framework created by Vercel that enables functionalities such as server-side rendering and static website generation for React-based web applications.
Tailwind is a collection of beautiful, fully responsive UI components designed and developed by us, the creators of Tailwind CSS. It has hundreds of ready-to-use examples and is guaranteed to help you find the perfect starting point for what you want to build.
styled-components lets you write CSS inside React components using JavaScript.
MySQL is a database management system, which uses the SQL language as an interface. It is currently one of Oracle Corporation's most popular database management systems, with more than 10 million installations worldwide.
PostgreSQL is an object-relational database management system, developed as an open source project.
MongoDB is a free, open-source, cross-platform document-oriented database software. Classified as a NoSQL database program, MongoDB uses JSON-like documents with schemas.
Prisma is a next-generation Node.js and TypeScript ORM for PostgreSQL, MySQL, SQL Server, SQLite, MongoDB, and CockroachDB. It provides type security, automated migrations, and an intuitive data model.
Sequelize is a Promise-based ORM (Object/Relational Mapper) for Node. js and io. js, and supports PostgreSQL, MySQL, MariaDB, SQLite, and MSSQL dialects, and features transaction, relationships, read replication, and more.
Mongoose is an ODM and provides a straightforward, schema-based solution for modeling your application data. It includes built-in type conversion, validation, query creation, business logic hooks, and more, out of the box.
Firebase is a platform developed by Google for creating mobile and web applications. It was originally an independent company founded in 2011. In 2014, Google acquired the platform, and it is now its core offering for app development.
Hibernate is a framework for object-relational mapping written in the Java language, but it is also available in .Net under the name NHibernate. This framework facilitates the mapping of attributes between a traditional relational database and the object model of an application, through the use of Java files (XML) or annotations (see Annotation (java)).
RESTful API is an interface that provides data in a standardized format based on HTTP requests. It provides data for these applications, making it easier to register and access. RESTful API is stuck until a request happens.
Node.js is an open-source, cross-platform software based on Google's V8 interpreter that allows JavaScript code to be executed outside of a web browser
Express.js is a framework for Node.js that provides minimal resources for building web servers. It was released as free and open-source software under the MIT License. It is one of the most popular server frameworks in Node.js.
NestJS is an open-source Node.js framework intended for server-side application development. It was created by Kamil Mysliwiec and released in 2017. Under the hood, by default, NestJS makes use of the Express.js framework, and is also compatible with Fastify. Its architecture is heavily inspired by Angular.
Java is an object-oriented programming language developed in the 1990s by a team of programmers headed by James Gosling at Sun Microsystems, which in 2008 was acquired by Oracle Corporation.
React Native is a Javascript library created by Facebook. It is used to develop applications for Android and iOS systems natively.
Linux is a term popularly employed to refer to operating systems or operating systems that use the Linux Kernel. The core was developed by Finnish programmer Linus Torvalds, inspired by the Minix system. 
UML class diagrams map the structure of a given system by modeling its classes, their attributes, operations, and relationships between objects.
npm is a package manager for Node.JS npm, Inc. is a subsidiary of GitHub, which provides hosting for software development and version control using Git. npm is the default package manager for the JavaScript Node.js runtime environment.
Google Cloud Platform makes it possible to create more optimized applications and websites, resulting in the growth of your business. Thus, the company can develop functions with unique purposes, capable of responding to events in the cloud.
Amazon Web Services (or AWS) has been around since 2006 and offers IT infrastructure services to companies through web services – the so-called cloud computing, which gives us the chance to trade high infrastructure expenses for prices that fit in our pockets.
Vercel's Frontend Cloud provides developers with frameworks, workflows, and infrastructure to build a faster, more personalized web.
Heroku is a cloud-as-a-service platform that supports multiple programming languages. One of the first cloud platforms, Heroku has been in development since June 2007 when it only supported the Ruby programming language, but now it supports Java, Node.js, Scala, Clojure, Python, PHP, and Go.
Docker is a suite of platform-as-a-service (PaaS) products that use operating system-level virtualization to deliver software in packages called containers. Containers are isolated from each other and bundle their own software, libraries, and configuration files. They can communicate with each other through well-defined channels. All containers are run by a single operating system kernel and therefore use fewer resources than machines
Postman is an API platform for developers to design, build, test, and iterate their APIs. As of February 2023, Postman reports having more than 25 million registered users and 75,000 open APIs, which it says constitutes the largest public API hub in the world. The company is headquartered in San Francisco and maintains an office in Bangalore, where it was founded.
JUnit is an open-source framework, which resembles the Java software testing beam, created by Erich Gamma and Kent Beck, with support for the creation of automated tests in the Java programming language.
Apache Maven, or Maven, is a build automation tool used primarily in Java projects. It's similar to the Ant tool, but it's based on different concepts and work in a different way.
Python is a high-level, script-interpreted, imperative, object-oriented, functional, dynamically typed, and strong programming language. It was launched by Guido van Rossum in 1991.
Ansible is an open source IT automation tool used for infrastructure provisioning, configuration management, and application deployment. It is known for its simplicity and ease of use, using a human-readable language to define automation tasks, and for its security and reliability.
GitLab brings together all DevSecOps capabilities into a single application with unified data storage, centralizing everything in one place.
SonarQube is an open-source platform for continuous code quality analysis. It helps identify and fix issues like bugs, code smells, security vulnerabilities, and other code quality issues before they reach production. SonarQube supports multiple programming languages and integrates with development tools and CI/CD pipelines, providing an automated approach to code quality assurance.
Jenkins is a widely used code automation server for implementing Continuous Integration (CI) and Continuous Delivery (CD) pipelines. It makes it easy to automate tasks related to building, testing, and deploying software, enabling development teams to accelerate the project lifecycle.
Kubernetes automates operational container management tasks and includes built-in commands for deploying applications, implementing changes to your applications, scaling your applications up and down to meet changing needs, monitoring your applications.
Rancher is an open source Kubernetes cluster management platform that makes it easy to deploy and manage containerized applications across on-premises environments and public and private clouds. Rancher provides a unified interface for viewing and managing multiple Kubernetes clusters, simplifying tasks such as provisioning, monitoring, and security.SELECTED WORK
A selection of projects built over the years, combining product thinking, engineering, and attention to experience details.
View all repositoriesIMMEDIATE AVAILABILITY
Open to CLT, PJ, or cooperative positions in Brazil and abroad, as well as selected development and DevSecOps consulting projects.