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 Role We'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 On · Building and maintaining RESTful APIs in Ruby on Rails · Writing Node.js / Express microservices that handle device telemetry, push notifications, and inter-service communication · Working with NATS (publish/subscribe message broker) for event-driven service coordination · Managing and querying MariaDB (MySQL-compatible) relational databases · Authoring and maintaining Dockerfiles and Docker Compose configurations for a microservices environment · Contributing to React / TypeScript frontend work as we modernize the UI layer · Debugging across service boundaries — logs, WebSockets, UDP streams, and REST Required Skills · 3+ years back-end development experience · Proficiency in Ruby on Rails or a comparable MVC web framework (willing to ramp on Rails) · Node.js for microservice development · Relational databases (PostgreSQL, MySQL/MariaDB — schema design, query optimization) · Docker and Docker Compose for containerized local development and deployment · CI/CD pipeline experience (GitHub Actions or similar) · Comfort reading and writing REST APIs · Familiarity with event-driven and pub/sub patterns Nice to Have · TypeScript for type-safe Node.js services · AWS 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 patterns · Observability 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 You · Can trace a bug across multiple services with nothing but logs and a Docker network · Prefer working in a small team where your contributions ship quickly · Are comfortable with a mixed-age codebase — there's legacy code here alongside greenfield work · Don't need heavy process; we value working software over comprehensive documentation Reporting: This position reports to the Software Engineering Manager Salary Range: $115,000 - $135,000 per year based on qualifications Employment Type: Full-Time Location: 5870 Tennyson St. Arvada, Colorado 80003 Pay: $115,000.00 - $135,000.00 per year Benefits: 401(k) Dental insurance Health insurance Vision insurance Work Location: In person