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