Senior Ruby on Rails Developer

Senior Ruby on Rails DeveloperYour Work Shapes the World at Caterpillar Inc.When you join Caterpillar, you're joining a global team who cares not just about the work we do – but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here – we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it.About Tangent Energy Solutions:Tangent Energy Solutions is a wholly owned subsidiary of Caterpillar, a global leader in the manufacturing of construction and mining equipment, diesel and natural gas engines, industrial gas turbines, and diesel-electric locomotives. Headquartered in Kennett Square, Pennsylvania, Tangent Energy Solutions was established in 2009 to provide innovative energy solutions for commercial and industrial customers.We are looking for an experienced Senior Ruby on Rails Developer to join our team. The ideal candidate will have a deep understanding of the Ruby on Rails framework and experience working with data-intensive, business-oriented web applications. Additionally, the candidate must have experience with deploying infrastructure and code at scale to AWS cloud services. This is a full-time, in-office role, reporting Monday through Friday to our office in Kennett Square, Pennsylvania.What You Will Do:Design, develop and maintain Ruby on Rails applications in the energy spaceCollaborate with business and operational stakeholders to define, plan, and deliver new featuresDesign and implement ML-ready data pipelinesParticipate in the design and architecture of new systems and applicationsEnsure code quality and maintainability by writing tests, conducting code reviews, and following industry best practicesAssist in shared DevOps duties including infrastructure management and code deploymentRearchitect and refactor core application components for efficiency improvements and to reduce technical debtTroubleshoot and resolve complex technical issuesProvide guidance and mentorship to junior developersUse AI coding tools to analyze, specify, and implement complex new software featuresDevelop AI Skills and tools to improve the efficiency of our development process, to explore new avenues for development, and to document existing processes and codeRequired Proficiencies:Expert-level knowledge of the Rails framework (version 7+) and its core librariesA strong command of automated testing strategies and tools (Rspec, Capybara, etc.)Experience with and commitment to automated testing for both front- and back-end functionalityStrong understanding of web application architecture, object-oriented programming, and design patternsProficiency using git and experience with GitHub Enterprise and GitHub actionsApplied understanding of agentic development and experience managing and reviewing the work of AI-assisted developersExcellent communication and interpersonal skillsWhat Will Put You Ahead:9+ years of recent professional experience in full-stack Ruby on Rails developmentExperience deploying containerized Rails applications at scale to AWS cloud servicesExperience with IoT systems and edge computingExpertise in Data Streaming technologies such as Flink, Kafka, Kinesis, etcUnderstanding of common ML workflows and off-the-shelf ML tools, especially in the AWS ecosystemFamiliarity with Ancillary Services in the energy marketExperience with generator and energy storage control systemsIf you are passionate about software development and want to work for a fast-growing Energy As A Service (EaaS) company, please apply to join our team.