Senior Java Developer (Java, Spring Boot, AWS) - 100% Remote

This team maintains locomotives, railcars, and detector systems that capture millions of operational and safety data points across the network.About the Position:The role focuses on refactoring legacy microservices, scaling event-driven architectures, re-platforming rules engines, and building cloud-native, resilient, high-volume IoT data pipelines. This is a high-impact engineering role where your work directly influences safety, reliability, and operational efficiency across one of the largest transport networks in the US.Apply Today if your Background Includes:6+ years of Full Stack experience with a backend emphasis in Java Spring Boot development.Strong event-driven architecture + Kafka experienceProven experience modernizing legacy microservices & distributed systemsAWS Cloud experienceHands-on Python experience for backend/data workflowsDevSecOps mindset: automated testing, CI/CD, secure codingExperience supporting both greenfield and legacy systemsStrong relational DB experience (Postgres preferred)Experience handling IoT or high-volume sensor data pipelinesFamiliarity with open-source tooling and cloud-agnostic architecturesAbility to mentor junior engineers and provide technical leadershipWhat the Right Professional Will Enjoy!Fully remote work opportunity with up to 20% travel.Opportunity to work with a fast-growing team focused on modernization, cloud adoption, and automation.Direct impact on safety, rail operations, and national freight logistics.Work on high-volume IoT, event-driven architectures, cloud-native systems.Exposure to AI/GenAI, automation, and open-source toolingLeadership opportunities with junior developersResponsibilities:Modernize legacy microservices and distributed systems supporting mechanical operations and detector networks.Design and implement backend services using Java, Spring Boot, event-driven patterns, and Kafka.Scale and optimize high-volume IoT data pipelines (30M+ incoming data points from sensors/detectors).Lead architecture, design, and deployment efforts for new and existing services.Refactor and support large rules-engine frameworks (600+ rulesets).Contribute to cloud-native development (AWS preferred; Azure acceptable; cloud agnostic mindset encouraged).Use Python for backend workflows, automation, and data processing tasks.Build automated CI/CD and testing frameworks following DevSecOps best practices.Work with Postgres and relational databases to tune, model, and integrate data.Mentor junior developers and support a strong engineering culture focused on speed, clarity, and automation.Collaborate across teams to build scalable, modern systems.Support both new development and the existing application footprint.