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Senior Systems Software Engineer Jobs in Wisconsin

Sr Software Engineer

Madison, WI ยท On-site

$106K - $145K/yr

We are seeking a Senior Software Engineer to join the team building the control system software for Infleqtion's quantum computers. The ideal candidate is an experienced backend engineer with a ...

Senior Systems Engineer

Waukesha, WI ยท On-site

$104K - $143K/yr

Summary The Senior Systems Engineer for Cardiology Systems is a cross-functional engineering leader ... Knowledge of system architecture, subsystem integration, and software-hardware interactions.

Senior Software Engineer

Waukesha, WI ยท On-site

$122K - $161K/yr

As a Senior Software Engineer, you will own the design, development, and delivery of next ... and system levels. โ€ข Document designs and verification activities. โ€ข Perform component ...

Senior Systems Engineer

Waukesha, WI ยท Hybrid

$104K - $143K/yr

Summary The Senior Systems Engineer for Cardiology Systems is a cross-functional engineering leader ... Knowledge of system architecture, subsystem integration, and software-hardware interactions.

Sr. Software Engineer

Milwaukee, WI ยท Hybrid

$120K - $159K/yr

In the role of Sr. Software Engineer working in Milwaukee, WI you will be part of the Information ... You are proactive and curious, with a drive to understand systems and how they elegantly support ...

Sr. Software Engineer

Milwaukee, WI ยท Hybrid

$120K - $159K/yr

In the role of Sr. Software Engineer working in Milwaukee, WI you will be part of the Information ... You are proactive and curious, with a drive to understand systems and how they elegantly support ...

Senior Software Engineer

Pleasant Prairie, WI ยท On-site

$118K - $156K/yr

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Sr. Software Engineer

Milwaukee, WI ยท On-site

$120K - $159K/yr

In the role of Sr. Software Engineer working in Milwaukee, WI you will be part of the Information ... You are proactive and curious, with a drive to understand systems and how they elegantly support ...

Senior Software Engineer

Kenosha, WI

$119K - $157K/yr

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Senior Software Engineer

Pleasant Prairie, WI ยท On-site

$118K - $156K/yr

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Senior Software Engineer

Kenosha, WI ยท On-site

$119K - $157K/yr

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Senior Software Engineer

Milwaukee, WI

$120K - $159K/yr

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Senior Software Engineer

Milwaukee, WI ยท On-site

$120K - $159K/yr

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Enhance system observability and monitoring across thousands of microservices with tools like ...

Senior Software Engineer

Waukesha, WI ยท On-site

$122K - $161K/yr

Summary As a Senior Software Engineer, you will own the design, development, and delivery of next ... Facilitate system performance issue triage and resolution. * Research industry trends in Compute ...

Senior Software Engineer

Waukesha, WI

$122K - $161K/yr

Summary As a Senior Software Engineer, you will own the design, development, and delivery of ... Facilitate system performance issue triage and resolution. * Research industry trends in Compute ...

Senior Software Engineer

Milwaukee, WI ยท Hybrid

$120K - $159K/yr

Senior Software Engineer Join our team at Alegeus, where you'll experience unmatched opportunity ... Support critical systems through occasional off-hours on-call rotation (every 3-4 months) and ...

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Showing results 1-20

Senior Systems Software Engineer information

See Wisconsin salary details

$88.3K

$136.6K

$191.3K

How much do senior systems software engineer jobs pay per year?

As of Jul 19, 2026, the average yearly pay for senior systems software engineer in Wisconsin is $136,555.00, according to ZipRecruiter salary data. Most workers in this role earn between $107,000.00 and $161,500.00 per year, depending on experience, location, and employer.

What is a Senior Systems Software Engineer?

A Senior Systems Software Engineer is an experienced professional who designs, develops, and maintains system-level software such as operating systems, embedded systems, and network protocols. They are responsible for ensuring that software interacts efficiently with hardware, optimizing performance, and troubleshooting complex issues. Senior engineers often lead technical projects, mentor junior team members, and collaborate with cross-functional teams to deliver robust software solutions.

What are some common challenges faced by Senior Systems Software Engineers and how can they be addressed?

Senior Systems Software Engineers often encounter challenges such as integrating legacy systems with modern technologies, optimizing system performance under tight resource constraints, and ensuring robust security in complex environments. These challenges can be addressed by staying current with industry best practices, collaborating closely with cross-functional teams (like DevOps and Security), and regularly participating in code reviews and architecture discussions. Leveraging automation tools and maintaining thorough documentation also help in efficiently managing and scaling large, distributed systems.

What are the key skills and qualifications needed to thrive as a Senior Systems Software Engineer, and why are they important?

To thrive as a Senior Systems Software Engineer, you need deep expertise in computer science, operating systems, and programming languages like C/C++, often supported by a relevant degree and extensive experience. Familiarity with version control systems (e.g., Git), build automation tools, and debugging/profiling utilities is typically required, and certifications in systems programming or cloud platforms can be advantageous. Exceptional problem-solving, collaboration, and communication skills set standout engineers apart by enabling them to navigate complex systems and coordinate effectively with cross-functional teams. These skills are vital for building robust, efficient software solutions that meet business and technical requirements in demanding environments.
What cities in Wisconsin are hiring for Senior Systems Software Engineer jobs? Cities in Wisconsin with the most Senior Systems Software Engineer job openings:
Infographic showing various Senior Systems Software Engineer job openings in Wisconsin as of July 2026, with employment types broken down into 92% Full Time, 5% Part Time, 1% Temporary, and 2% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $136,555 per year, or $65.7 per hour.

Sr Software Engineer

Infleqtion

Madison, WI โ€ข On-site

$106K - $145K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 4 days ago


Job description

Infleqtion is on a mission to commercialize atom-based quantum technologies that deliver orders-of-magnitude improvements in sensing and computing applications. We are seeking self-motivated, energetic individuals with exceptional problem-solving and technical skills to help drive our Quantum Computing mission forward.

At Infleqtion we embrace a startup mentality driven by results, urgency, and customer-focused innovation:

  • We break down barriers between disciplines, stepping in wherever we can make the biggest impact.
  • We thrive in uncertainty, embracing challenges as opportunities.
  • We move quickly to prototype while never losing sight of the critical importance of systems engineering process and attention to detail.
  • We take bold, calculated risks to drive progress.

We are seeking a Senior Software Engineer to join the team building the control system software for Infleqtion's quantum computers. The ideal candidate is an experienced backend engineer with a strong background in creating robust and scalable scientific applications. You will play a crucial role in designing, building, and maintaining backend services and control systems that drive our neutral atom quantum machines.

JOB RESPONSIBILITIES

The duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all of the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned at any time.

  • Design, develop, and deploy reliable, maintainable, scalable, and fault-tolerantย backend services and frameworks that control and calibrate our neutral atom quantum computers.
  • Collaborate with interdisciplinary teams, including scientists, opto-mechanical engineers, and electrical engineers, to solve complex problems and deliver high-quality software solutions.
  • Empower interdisciplinary teams to create the tools they need by teaching engineering and programming best practices.
  • Mentor and guide junior engineers, fostering their growth and enhancing theย team's technical expertise.
  • Lead code and design reviews, upholding engineering best practices andย promoting a culture of quality and collaboration.
  • Support and debug all layers of the control stack from real-time embedded kernels to distributed services.
  • Advocate for and implement innovative software development methodologiesย and tools to improve team efficiency and product quality.

Requirements

  • Bachelor's degree in Computer Science, Applied Mathematics, Physics or related field and a minimum of 5 years prior work experience
  • Experience with Python and at least one compiled language, with a desire to learn and work in Rust
  • Experience with Linux and virtualization technologies like Docker
  • Good verbal and written communication skills, able to effectively share information with technical and non-technical staff
  • Good collaboration skills, able to work in a team environment where engagement and participation are an expected part of successful job performance
  • Skilled in typical software engineering disciplines: testing, debugging, revision control, error-handling, readability, documentation, general code health, etc.
  • Desire to constantly improve and learn inside and outside of expertise
PREFERRED EXPERIENCE:
  • Domain-specific experience in statistics, machine learning, or AMO physics
  • Experience with Numpy, Scipy, and Pytorch
  • Experience with image analysis, emphasis on realtime object detection
  • Experience with databases (relational and non-relational) including but not limited to timeseries data, SQL, and ETL processes
  • Experience creating CI/CD pipelines, and Python package creation with C or Rust extensions

Benefits

The targeted salary range for this role is $106,000 to $145,000 on an annualized basis plus eligibility to participate in our annual incentive plan.

In addition to your base compensation, we offer a generous Total Rewards program which includes:

  • 100% company paid Employee coverage for Medical, Dental, Vision, and Short/Long Term Disability insurance programs
  • Employer funded Health Savings Account
  • Unlimited Paid Time Off
  • 401(k) Matching Programs
  • Company paid Life and AD&D Insurance
  • Flexible Healthcare Savings Account
  • Paid FMLA Leave
  • Paid Maternity/Paternity Leave
  • Employer Assistance Program
  • Student Loan Repayment

Equal Opportunity

Here you have freedom to embrace your whole self: who you love, your gender identity and expression, skin color, age, appearance, disability, neurodiversity, DNA, military/veteran status, citizenship, and other factors that make up who you are. Your uniqueness is valued, welcomed, and appreciated here. We are dedicated to providing a positive workplace and base all employment decisions on your qualifications, performance, merits, as well as business needs. We are proud to be an Equal Employment Opportunity Employer.