Senior Software Developer Jobs in Bangor, WI (NOW HIRING)

Description

About XeteX

At XeteX, our mission, vision, and values drive our company purpose: "Helping Buildings Breathe Better." By designing and manufacturing high-performing energy recovery ventilation and air handling solutions for industrial and commercial buildings, XeteX produces a better world for all of us.

XeteX was founded in 1984. In recent years, our Company has experienced unprecedented growth and has been recognized as an eight-time Inc. 5000 Honoree ranking as one of the fastest-growing private companies in America. Our headquarters are located in Coon Rapids, MN and our production facilities are based in Holmen, WI.

Xetex is teaming with innovation, expertise, and outstanding people. That is why we value our people as our greatest asset! Our employees lead through integrity, apply creativity and talent, invent innovative solutions to meet new demands, and offer effective services/products to be leaders in the industry. By adding your creativity, innovations, and contributions, you take pride in being a valued member of our growth and success.

Software Engineer - HVAC Systems

The Software Engineer has a strong mechanical aptitude and HVAC knowledge to support the development and enhancement of engineering selection and performance software tools. This role bridges software development and mechanical engineering by translating HVAC concepts such as airflow, heat transfer, psychrometrics, and system performance into accurate, scalable, and user-friendly applications. The ideal candidate will collaborate closely with engineering, product management, and application teams to develop tools that support equipment selection, product configuration, and system design.

Job Duties:

Software Development & Engineering Logic

Translate mechanical engineering concepts including thermodynamics, heat transfer, fluid dynamics, and airflow into executable software logic

Collaborate with internal engineering teams and external software contractors to develop, revise, test, and maintain performance and sales selection tools

Write clean, modular, and maintainable code following software development best practices and lifecycle standards

Participate in system testing, debugging, validation, and software performance optimization

Maintain version control and contribute to software documentation and process improvements

HVAC & Mechanical Systems Integration

Convert HVAC engineering principles such as psychrometrics, static pressure, fan performance, and coil calculations into reliable software calculations

Interpret engineering specifications, submittals, and product performance data to support application development

Validate engineering calculations related to:

o Handling Unit (AHU) selection

o Coil performance

o Fan curves and system pressure

Support software updates related to new product lines, engineering changes, and feature enhancements

Cross-Functional Collaboration

Work closely with:

o Mechanical Engineers

o Product Managers

o Sales and Application Engineers

Gather and refine software requirements for new tools and feature enhancements

Participate in product development discussions and design reviews

Provide technical support and user training for engineering selection software

Testing & Validation

Develop and execute unit tests and validation routines for engineering calculations

Cross-check software outputs against manual engineering calculations and performance data

Support quality assurance efforts and ensure compliance with internal standards

Continuous Improvement

Identify opportunities to automate manual engineering workflows and improve usability

Enhance software scalability, performance, and maintainability

Stay current with emerging software frameworks, technologies, and development best practices

Contribute to technical documentation, knowledge sharing, and continuous improvement initiatives

Preferred / Nice-to-Have Experience

Experience developing web-based or cloud-hosted engineering applications

Familiarity with data visualization tools for fan curves, psychrometric charts, or performance plotting

Experience integrating with BIM platforms such as Revit

Knowledge of API development and external system integrations

Requirements

Qualifications:

Bachelor of Science in Computer Science, Software Engineering, Mechanical Engineering, or related technical field required

Approximately 5 years of software development experience

Strong mechanical aptitude and interest in HVAC systems required

Experience with:

o C#

o .NET Framework / .NET Core

o HTML

o JavaScript

Understanding of HVAC systems, thermodynamics, airflow, or related mechanical principles preferred

Strong analytical, troubleshooting, and problem-solving skills

Ability to work cross-functionally with engineering and technical teams

Excellent communication and organizational skills

Equal Opportunity Employer

XeteX is an equal opportunity employer. We provide equal employment opportunities to all employees and applicants without regard to race, color, religion, sex, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws.