Firmware Senior Developer opportunity for people living in Brazil with good English skills.Our teamWe are a dynamic and forward-thinking development company that focus on delivering high quality software development services for clients around the globe. We are entering our third year of existence, we are re-branding and expanding our team to new horizons. Even though this is a freelance opportunity we prefer long term partnerships. If you are interested in joining our team, please fill this form.The ScopeWe're looking for a Firmware Developer to join our team and play a key role in developing IoT solutions. Your primary focus will be on Thingsboard. You willDevelop and maintain robust firmware for ESP32 and ESP8266 microcontrollers, leveraging C/C++. Implement real-time communication protocols (WiFi, HTTP/S, MQTT, SPI, I2C, BLE). Design and implement firmware modules with clear isolation and strong maintainability.Leverage Thingsboard functionalities (Rule Chains, Version Updates, Custom Widgets & Dashboards) to create an intuitive user experience for data management and control.Firmware OTA implementation.Telemetry manipulation and data normalization.Collaborate closely with the tech leads, backend and front-end developers teams to ensure smooth integration of firmware functionalities within the overall system.Write clean, well-documented, and maintainable code that adheres to best practices.Conduct unit testing and participate in integration testing to ensure code quality and system functionality.Participate in code reviews and continuously improve the codebase.QualificationsAvailable for 30h a week to work in our projectsA senior-level Firmware Developer with extensive hands on experience.Extensive knowledge of C/C++ programming and microcontroller architectures (ESP32, ESP8266).Solid understanding of real-time operating systems (RTOS) like FreeRTOS.Familiarity with Thingsboard and its capabilities for data visualization and control (Rule Chains, Version Updates, Custom Widgets & Dashboards).Experience with communication protocols like WiFi, HTTP/S, MQTT, SPI, I2C, and BLE.Experience with version control systems (Git) and CI/CD pipelines (e.g., GitHub Actions, GitLab).A strong team player with excellent communication and collaboration skills.A problem-solver with a proactive approach and a commitment to quality.Strong in analytical, problem-solving, and debugging skillsExcellent in English written skillNot afraid to make questionsFamiliar with using Scrum/Agile development methodologiesBonus points:Experience with development boards (Arduino, Espressif, Particle).Familiarity with Docker containers for streamlined deployment.Experience with cloud platforms like AWS IoT.Knowledge of Python scripting for automation tasks.Experience with Linux system administration scripting.What we offer:Competitive hourly compensation in dollarsInternational projectsFlexibility of remote workOpportunity to work in more projects with us
