Software Engineer Senior

Acuity Inc.•Washington, MO

4d•$120,800 - $217,400

About The Position

Join a team building the software platform that connects commercial refrigeration systems in the field to the cloud. Our engineers solve complex problems across IoT, device networking, edge connectivity, distributed systems, cloud services, APIs, data pipelines, and web applications—with software that directly operates at the intersection of physical equipment and digital systems. As a Senior Software Engineer, you’ll own services and capabilities end to end, shape architecture and technical direction, and solve challenging problems involving thousands of connected devices, unreliable field networks, high-volume telemetry, scalability, security, and system reliability. You’ll work across the technology stack, lead technical design discussions, and help build systems that are robust in the field and scalable in the cloud. This is an opportunity to have meaningful technical ownership while working on a real-world IoT platform where software decisions directly impact how commercial refrigeration systems are monitored, managed, and optimized.

Requirements

Linux Administration: Command-line proficiency, Shell scripting (Bash), File system and permissions management, Process and service management, System monitoring and troubleshooting, Log analysis and diagnostics, SSH and remote system administration.
Modern Web Development: Frontend Development Experience with HTML5, CSS3, JavaScript (ES6+), Responsive web design, React.js or equivalent modern frontend framework.
Backend Development: Experience designing and implementing RESTful APIs, Authentication and authorization mechanisms, Session management, Secure application development practices, API integration and service-oriented architectures.
Web Architecture: Strong understanding of client-server architecture, API design principles, Data flow between frontend and backend systems, Application scalability considerations, Caching strategies and performance optimization, Distributed application architectures.
Programming Skills: Demonstrated proficiency in multiple programming languages, including experience with at least several of the following: Go, C/C++, Python, Java.
Strong software design principles
Data structures and algorithms knowledge
Debugging and troubleshooting expertise
Ability to quickly learn and adopt new languages, frameworks, and technologies
Adaptability across different technology stacks

Nice To Haves

TCP/IP, UDP
DNS, DHCP
HTTP/HTTPS
SSL/TLS fundamentals
Routing and switching concepts
Firewalls and network security basics
VPNs and secure communications
Troubleshooting network connectivity issues
Understanding of software security best practices

Responsibilities

Design, develop, test, and maintain high-quality software applications and services.
Build scalable backend services, RESTful APIs, and web applications.
Participate in architecture discussions and technical design reviews.
Troubleshoot and resolve complex software, networking, and system-level issues.
Write clean, maintainable, and well-documented code.
Develop responsive and user-friendly web applications using modern frontend technologies.
Implement secure backend services supporting authentication, authorization, and session management.
Design APIs that enable seamless integration between frontend, backend, and third-party systems.
Optimize system performance through caching and efficient API design.
Deploy and support applications in Linux-based environments.
Monitor system performance and analyze application and system logs.
Diagnose network, connectivity, and infrastructure-related issues.
Collaborate with DevOps and platform teams to improve system reliability and scalability.