Senior Software Engineer

Acuity; St. Louis (MO); On-site; USD 120,000 - 180,000; Full time

Job summary

Acuity is seeking a Senior Software Engineer to own services end-to-end for an IoT cloud platform connecting refrigeration systems. You will influence architecture, tackle large-scale telemetry, and collaborate across frontend, backend, and DevOps teams in a Linux environment.

The role emphasizes robust, scalable software with secure APIs and efficient data pipelines, impacting field equipment monitoring and optimization.

Qualifications

• 3-5 years of experience in web development technologies.
• Comfortable working in Linux environments with Bash, file permissions, processes and services.
• Experience with debugging, log analysis, and remote system administration.
• Proficient in frontend and backend development with modern web tech.

Responsibilities

• Design, develop, test, and maintain software applications and services.
• Build scalable backend services, RESTful APIs, and web apps.
• Participate in architecture discussions and technical design reviews.
• Troubleshoot complex software, networking, and system issues.
• Write clean, well-documented code and establish best practices.
• Develop responsive frontend applications using modern frameworks.
• Ensure secure authentication, authorization, and session management.
• Design APIs for frontend, backend, and third-party integration.
• Monitor performance; optimize caching and API efficiency.
• Collaborate with DevOps to deploy and support Linux-based systems.

Skills

Go

C/C++

Python

Java

Linux

Shell scripting

Distributed systems

RESTful APIs

Web development

Education

Bachelor's degree in Computer Science or related field

Job description

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.

Key Responsibilities

Software Development

• 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.

Web Application Development

• 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.

Systems and Infrastructure

• 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.

Required Technical Skills:

Bachelor's degree, preferably in Computer Science; A combination of education, training, and experience may be considered in lieu of a degree.

3-5 years of experience in web development technologies with:

Comfortable working in Linux environments, including:

• 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
• React.js or equivalent modern frontend framework

Experience designing and implementing:

• RESTful APIs
• Authentication and authorization mechanisms
• Session management
• API integration and service-oriented architectures

Strong understanding of:

• 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

Candidates should demonstrate:

• 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

Preferred Qualifications

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