Hire medio freelance Ruby on Rails developers in Brazil

I've been building and maintaining Ruby on Rails applications of all kinds and sizes since 2013, always trying to apply the best practices and community conventions. I'm studying more about AI and ways to improve my work/systems with it. I created a model for my current company to predict delivery times in our platform with 84% of accuracy. I have experience working in projects from conception to release and can work at any level of the stack. I'm that nerd guy always looking at some APM tool and trying to get the best out of the language/framework. I have experience with legacy projects and enjoy solving performance related issues. Technologies I can work with: Javascript, Python, Relational and Non-relational databases, ElasticSearch, APM tools, all major cloud providers.

As a seasoned software engineer with a strong background in Ruby, Rails, and JavaScript, I have a proven track record of delivering high-performance solutions. With experience in building blazing-fast storefronts and improving memory and CPU efficiency, I excel in creating scalable and resilient systems.

Hi, there! I am a collaborative Ruby on Rails Developer with a growth mindset from Brazil. After experiencing the world of entrepreneurship, I found programming again after years away, and this time I got fascinated like never before, so I decided to put everything I was doing aside and dived into this world. First I started some online courses, and then decided to go for a presential bootcamp at Le Wagon Programming School, where I had a quite good performance. I also have a Production Engineering Bachelor Degree at Universidade Federal Fluminense, a prestigious university in Brazil. Currently working at Gig Wage, a fintech company that provides payroll solutions for gig workers and contractors (10/2022- Present). Thank you for reading until here, and feel free to contact me any time for any reason.

My career as a Ruby on Rails developer has evolved into a journey of constant innovation and practical solutions to complex problems. At the heart of every project, my goal is always clarity and effectiveness. At Nomad Global, I not only enhanced our main application but also designed mechanisms that facilitate international transactions for thousands of Brazilians. Technology is more than just code; it is the bridge to efficiency and security in financial services. With Arbnco, I took sustainability analysis to the next level, integrating data that now guides property decisions on a global scale. Every line of code has the potential to positively impact the environment and resource economy. If you are looking for an expert passionate about transforming challenges into efficient and sustainable solutions, I am ready for the next step. Connect with me and let's explore how my experience can boost your next big project.

I am an experienced full-stack web developer with over eight years of expertise in Ruby-based applications, e-commerce, and cloud hosting solutions. My career includes significant contributions to companies like envato.com, huntclub.com, crazyegg.com, actionbuilder.org, referralcandy.com and the successful launch of two bootstrapped startups of my own. Beyond my technical work, I have a few contributions to open-source projects such as graphql-ruby, demonstrating my commitment to the development community (see here). My technical skills include Ruby, Ruby on Rails, Elixir, Phoenix (beginner), MySQL, Redis, Linux, AWS, HTML/CSS, Javascript, NodeJS, Email Marketing, E-commerce and more. Outside of coding, I have a passion for exploring the world; I've visited 39 countries and counting.

Lucas Fernandes, 31, SP - Brazil Lucas who? Well, I'm Lucas, I'm 31 years old, I live in São Paulo, Brazil, with my girlfriend, and I have a degree in Information Systems. Outside of work, I enjoy cycling and drawing quite a bit. I began my career in technology back in college, working as a tester, as QA. In my first job, I was mainly responsible for creating and reviewing software testing documents, such as performance testing strategy documents. Additionally, I started creating performance testing scripts. Working with those testing scripts it's when I saw an opportunity because since I started my studies, my goal was to become a programmer. While working as QA, I found that working with writing automated test scripts was a good way to keep myself closer to the code itself. After my first company, I joined Inmetrics. At Inmetrics, my focus was on creating, reviewing, and executing automated test scripts for Android and iOS applications using the Ruby language. With the experience I gained at Inmetrics, I felt comfortable enough to start looking for a programmer position. Since then, I've been working as back-end developer using technologies such as Ruby on Rails, RSpec, Docker, Git/Github, MySQL, Postman, CodeFresh, PostgreSQL, MongoDB, RabbitMQ, Redis and SCRUM and Kanban as methodologies. What are my unique skills? Although I believe API development wasn't my primary focus, in my last three positions, I gained considerable experience in it. Specifically, my responsibilities included integrating partners through the API, developing new endpoints and webhooks, maintaining API endpoints, updating API documentation, refactoring code, performing migrations of new columns and tables, publishing client libraries for other API versions, reviewing business models for new features, performing translations, and writing some queries. Additionally, I was responsible for writing tests and monitoring them after deployment to production, essentially covering the entire development lifecycle. What Lucas DON’T you want to work on? There's nothing specific that I don't want to work on. I want to work in a place where I can feel comfortable advancing my development as a developer and participating in projects that involve more advanced subjects, as I believe I still have a lot to learn. Therefore, I'm seeking a company with flexible and collaborative people. If I feel that the position doesn't align with that, it's not a place I want to work. How would I describe my style of coding? I enjoy expressing my ideas through code, or at least I try to, that is easy and pleasing to read. I believe code should be easy and pleasing to read, guiding you through its abstractions to understand what's happening without much effort instead of you try hard to connect the pieces. I value expressiveness, for example, ensuring that objects or methods serve a single purpose, abstract code that has been duplicated and naming things with meaningful names. The Rails community is well-known for this, but I also emphasize the importance of writing tests, as they provide peace of mind when changing code. My experience with APIs tells me that I also appreciate clear and well-documented APIs that are easy to use. What have I been doing lately? Currently, I think I've been trying to balance my days around these three things lately: studying programming, improving my drawing skills, and cycling. I think it's worth mentioning that I view these activities outside of work positively because they put me in contact with other people and each one brings a different feeling. And, of course, this also reflects positively on my work. Currently area of study As of now, I have been studying JavaScript and delving into some backend topics. I have been using roadmap.sh/backend to guide myself through this process, and I've been posting my JavaScript code at: https://github.com/lsfernandes92/studi3s/tree/master/JavaScript.

My journey as a developer has been nothing short of a thrilling adventure, filled with continuous growth and learning. It all began back in 2010 when I took my first steps into the world of programming. The very first programming language that I got my hands on was PHP. I remember the excitement of writing my first "Hello World" program and the sense of accomplishment that followed. It was in those early days that I realized the potential of turning lines of code into functional applications. As the years rolled on, I delved deeper into the world of web development. Around the mid-2010s, I found myself venturing into the realm of JavaScript and Node.js. It was a significant shift from PHP, and it opened up a whole new world of possibilities. Building real-time applications and server-side scripting with Node.js was a whole new ballgame, and it pushed me to refine my coding skills. However, the most significant turning point in my journey occurred towards the end of 2018 when I embarked on a new adventure by diving into the Ruby programming language and the Ruby on Rails framework. Ruby's elegant and concise syntax immediately appealed to me, and Rails' convention-over-configuration approach simplified the development process in a way that I hadn't experienced before. Working with Ruby and Rails allowed me to develop web applications rapidly and efficiently, and I quickly fell in love with the framework's emphasis on developer happiness. Over the years, I've continued to grow as a developer, honing my skills in various programming languages and frameworks. Each language and technology I've encountered has contributed to my knowledge and experience, making me a more versatile and well-rounded developer. Looking back at my journey, it's clear that my passion for coding has driven me to explore new horizons and embrace the ever-evolving landscape of software development. I'm excited to see where the future of technology will take me and the new languages and frameworks I'll have the opportunity to learn and master.

My origins as a developer go back to my childhood days, when I programmed in Java, creating games (including the famous snake game) on large computers with Windows 95. As time went by, I followed the evolution of old programming languages as well as witnessed the emergence of new ones. I specialized in data analysis and structuring databases in SQL, including Oracle and SQL Server. I followed the emergence of neural language programming in Artificial Intelligence, at a time when ChatGPT prototypes already existed. I love coding ruby apps, specially with the adventure of rails where everything goes easy now. I have created lots of projects but my passion is to develop ruby on rails integrated to AI, Big Data and Cloud Development. I have expertise with git, docker, kubernets, terraform, ansible and other automations and all SQL and NoSQL environments. I have leadership experience as well, here in my country I have coordenated small developer teams using github, gitlab, JIRA, Linear and other tools. My language skills are English (read, write and speak), spanish and french. I can work as a freelancer as well, you give me your idea and I can help you bring it to the real world, I can also coordinate small developers teams, coordenate daily meetings and reports.

I am a driven and experienced full-stack developer with a passion for turning ideas into tangible solutions. My journey started back in 2006 when I created my first website on GeoCities and I have been hooked ever since. While music took up most of my time from 2011 to 2020, I have now dedicated myself to web development. Over the past three years, I have had the opportunity to work with a variety of industries including real estate, e-commerce, education, manufacturing, and digital products. As a full-stack developer, I have experience in both front-end and back-end development. On the back end, I have created features such as blogs, sales report systems, data modeling, API RESTful endpoints, authorization and permission logic, and many more. On the front end, I have developed landing pages, implemented form validations and error handling, created UI components, ensured LGPD (the Brazilian GDPR) compliance logic, and integrated external APIs. I have contributed to several robust applications in production, handling thousands of daily visits, and collaborated with cross-functional teams to ensure on-time project completion. I am committed to delivering high-quality work and continuously expanding my skill set to provide the best solutions for my clients.

I am a passionate brazillian 🇧🇷 developer with over 4+ years of experience. Most of my experience comes from mobile and Web SPA development - Android/IOS/Flutter. Currently working as RoR dev in a brazillian BaaS product.