Back-End Software Developer (Full-Stack Lean)

About Us: Wanco is an innovative leader in fleet management solutions, providing cutting-edge technology to optimize transportation operations, ensure compliance with regulatory standards, and enhance real-time data integration for safer and more efficient roadways. Our platform supports a wide range of clients in the transportation sector, leveraging cloud-based architectures to deliver scalable, reliable services.About the RoleWe're looking for a back-end developer with solid full-stack instincts to join a small, cross-functional team building Fleet Manager — a real-time fleet and device management platform deployed in containerized microservices environments. The work is predominantly back-end (APIs, messaging, integrations), but you'll also touch a modern React frontend as the team migrates away from a legacy AngularJS app. React exposure is a plus but not expected — we'll bring you up to speed on the frontend migration.What You'll Work OnBuilding and maintaining RESTful APIs in Ruby on RailsWriting Node.js / Express microservices that handle device telemetry, push notifications, and inter-service communicationWorking with NATS (publish/subscribe message broker) for event-driven service coordinationManaging and querying MariaDB (MySQL-compatible) relational databasesAuthoring and maintaining Dockerfiles and Docker Compose configurations for a microservices environmentContributing to React / TypeScript frontend work as we modernize the UI layerDebugging across service boundaries — logs, WebSockets, UDP streams, and RESTRequired Skills3+ years back-end development experienceProficiency in Ruby on Rails or a comparable MVC web framework (willing to ramp on Rails)Node.js for microservice developmentRelational databases (PostgreSQL, MySQL/MariaDB — schema design, query optimization)Docker and Docker Compose for containerized local development and deploymentCI/CD pipeline experience (GitHub Actions or similar)Comfort reading and writing REST APIsFamiliarity with event-driven and pub/sub patternsNice to HaveTypeScript for type-safe Node.js servicesAWS infrastructure experience (Fargate, S3, RDS) and Infrastructure-as-Code (Terraform)Experience with NATS or similar message brokers (RabbitMQ, Kafka, Redis Pub/Sub)React and React Query for frontend data-fetching patternsObservability tooling (Datadog or similar log aggregation and alerting platforms)Exposure to device/IoT protocols (NTCIP, CalAmp, SunTech, or similar)Go experience (used for CLI tooling)Any work with S3-compatible storage (MinIO, AWS S3)You'll Thrive Here If YouCan trace a bug across multiple services with nothing but logs and a Docker networkPrefer working in a small team where your contributions ship quicklyAre comfortable with a mixed-age codebase — there's legacy code here alongside greenfield workDon't need heavy process; we value working software over comprehensive documentationReporting: This position reports to the Software Engineering ManagerSalary Range: $115,000 - $135,000 per year based on qualificationsEmployment Type: Full-TimeLocation: 5870 Tennyson St. Arvada, Colorado 80003