Senior Software Developer

Maintain and modernize a large JavaScript/TypeScript codebase for an application designed to run on embedded Linux devices and cloud containers for industrial applications. Ensure robust Modbus RTU/TCP communications, troubleshoot serial communication and networking issues on resource-constrained Edge IoT hardware, ship cross-platform (incl. Windows) utilities, and support a Nuxt-based operational/configuration UI.

Key Responsibilities

Legacy Code Maintenance

• Troubleshoot and resolve bugs from globally deployed devices
• Refactor and stabilize legacy JavaScript/TypeScript code
• Document legacy behavior and contribute insights to .NET enhancements
• Add characterization tests and improve CI/CD hygiene

Edge Web UI

• Maintain and extend Nuxt-based admin screens for configuration and diagnostics
• Optimize rendering and bundle size for low-power devices

Field Device Communications

• Maintain Modbus RTU and TCP adapters
• Support legacy interfaces (e.g., OSISoft PI, KepServerEX)
• Troubleshoot networking issues in high-latency, small-MTU environments

Embedded Linux Operations

• Optimize code for CPU/memory and reduce flash wear
• Extend device health/status monitoring (e.g., temperature, signal, docker stats)
• Integrate with external industrial routers (e.g., Teltonika RUT series)

Security & Reliability

• Implement security best practices (least privilege, secret handling, signed artifacts)
• Design for resilience against power loss and degraded communication

Packaging, Cross-Compilation, Building, and Testing

• Cross-compile for Windows/Linux (x64/ARM64) and produce signed installers
• Automate matrix builds in CI and support QA testing with real hardware

Qualifications and Education Requirements

• BS in Computer Science, Computer Engineering, or related field
• Minimum 7+ years of software development experience

Required Skills

• Strong proficiency in JavaScript/TypeScript and Node.js backend development
• 7+ years software development; 5+ years Node.js/TypeScript; 2+ years CLI tools
• Hands-on experience with Modbus RTU/TCP and serial communication (RS-232/RS-485)
• Networking expertise in constrained environments
• 3+ years with Docker
• Nuxt: routing, layouts, middleware, Vite, performance tuning
• CI/CD: multi-OS runners, artifact signing, SBOMs/vulnerability scanning
• Cross-platform Node.js compilation for Linux and Windows
• Experience with Agile tools (Jira, Confluence, Bitbucket)
• Debugging low-level communication and performance issues

Desired Skills

• Familiarity with MQTT, SparkplugB, ZeroMQ, ProtoBuf, Kafka, HTTP
• Strong Linux skills: Bash, systemd, Docker, Kubernetes, OTA strategies
• Cellular networking on Linux: mmcli, nmcli
• NodeAPI/C++ addons, cross-compiling for ARM64, bundlers (pkg/nexe), Electron
• Familiarity with .NET/C#