Backend Software Developer Jobs in Wisconsin

About Johnson Controls

Johnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education.

For more than 140 years, Johnson Controls has delivered performance where it really matters. Backed by advanced technology, lifecycle services and an industry-leading field organization, we elevate customer performance, turn goals into real-world results and help move society forward.

What you will do

Johnson Controls is seeking a Staff Software Engineer to help support our Airwall Zero Trust technology! This technology is used to secure mission critical assets across the world. As cybersecurity concerns are growing, Airwall allows for secure remote access, edge to cloud communication, and even helps protect legacy infrastructure from discovery and attacks.

In this critical role, you will drive the technical direction of our OpenBlue Airwall Zero Trust Networking technology and overall communication flow between edge and cloud. This role is ideal for a hands-on engineer who excels at architecting complex systems, mentoring engineers, talking with customers, and influencing cross-functional teams. You will play a key role in setting technical standards, ensuring high levels of software craftsmanship, and solving high-impact technical challenges.

This position is remote for anyone based in the US.

How you will do it

• Ensure the quality and stability of our OpenBlue Airwall product portfolio
• Lead the development of new mechanisms for monitoring the health of data from edge to cloud
• Lead architectural decisions and technical strategy across products and platforms
• Help troubleshoot complex networking issues when they occur
• Collaborate closely with product, design, and engineering teams to define and deliver scalable solutions
• Act as a technical mentor for engineers at all levels
• Evaluate and recommend tools, technologies, and processes to ensure engineering excellence
• Contribute to key codebases and set standards for code quality, testing, and performance
• Represent engineering in executive discussions and help shape the long-term roadmap

What you will need

Required

• 5+ years of software engineering experience.
• Experience designing and scaling distributed systems or complex software architectures.
• Expertise in C++ and/or Rust, and the networking stack.
• Experience with AI native development, knowing when and when not to use harnesses as a core part of your workflow like Claude, Copilot, Codex, or Cursor.
• Experience with networking, such as VPN, Secure Remote Access, IAM identity management.

Preferred

• Zero Trust Networking experience
• Ruby & Ember.js

HIRING SALARY RANGE: $120,000 - $185,000 (Salary to be determined by the education, experience, knowledge, skills, and abilities of the applicant, internal equity, and alignment with market data.) This role offers a competitive Bonus plan that will take into account individual, group, and corporate performance. This position includes a competitive benefits package. The posted salary range reflects the target compensation for this role. However, we recognize that exceptional candidates may bring unique skills and experiences that exceed the typical profile. If you believe your background warrants consideration beyond the stated range, we encourage you to apply. To support an efficient and fair hiring process, we may use technology assisted tools, including artificial intelligence (AI), to help identify and evaluate candidates. All hiring decisions are ultimately made by human reviewers.