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Senior Software Engineer Startup Jobs in Wisconsin

Koch Industries

Senior Software Engineer

Green Bay, WI · On-site

$119K - $157K/yr

As a Senior Software Engineer, you will design and deliver scalable software solutions that support our transportation and logistics platforms. This AI-native product engineering role requires strong ...

Google Inc.

WI · On-site

$174 - $252/hr

Senior Software Engineer, Gemini Cloud Assist Share Senior Software Engineer, Gemini Cloud Assist * link Copy link Google Sunnyvale, CA, USA Mid Experience driving progress, solving problems, and ...

GE HealthCare

Sr. Software Engineer

Waukesha, WI · On-site

$122K - $161K/yr

GE HealthCare is shaping the next generation of MR scanner technology, seeking a Senior Software Engineer. This role involves designing, developing, and testing software components in a collaborative ...

Soteria Reinsurance Ltd.

WI · On-site

$110 - $150/hr

## Senior Software Engineer/DeveloperApplylocations: Westlake, TXtime type: Full timeposted on: Posted Todaytime left to apply: End Date: September 8, 2026 (30+ days left to apply)job requisition id ...

One Tech Engineering

Senior Software Developer

Appleton, WI · On-site

$53.25 - $70.25/hr

The Senior Software Developer will manage software programs and applications from start to finish, while analyzing software errors and reviewing status reports. The candidate must be a US Citizen or ...

Abbott

Sr. Software Engineer

Madison, WI · On-site

$123K - $162K/yr

As a Sr. Software Engineer, this seasoned professional will demonstrate competence and creativity in a wide range of technical areas. This role will have a lead role in the design, development, and ...

UnitedHealth Group

Senior Software Engineer

Wausau, WI · On-site

$131K - $173K/yr

Position Summary We are seeking a Sr. Software Engineer to join our OPTUM UMR clinical technology team as an ETL Developer. In this role, you will play a critical part in the end-to-end (E2E ...

Abbott

Sr. Software Engineer

Madison, WI · On-site

$123K - $162K/yr

As a Sr. Software Engineer, this seasoned professional will demonstrate competence and creativity in a wide range of technical areas. This role will have a lead role in the design, development, and ...

Leinenkugel's

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · On-site

$120K - $159K/yr

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

UnitedHealth Group

Senior Software Engineer

Wausau, WI · Remote

$131K - $173K/yr

Position Summary We are seeking a Sr. Software Engineer to join our OPTUM UMR clinical technology team as an ETL Developer. In this role, you will play a critical part in the end-to-end (E2E ...

Gordon Food Service

Senior Software Engineer

Stevens Point, WI · On-site

$119K - $156K/yr

The Senior Software Engineer develops, creates, and modifies general computer applications software or specialized utility programs. They analyze user needs and develop software solutions. They will ...

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

Directsupply

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $159K/yr

In the Senior Software Engineer position, you'll lead the development of intelligent, adaptive, and scalable applications by leveraging AI-powered development tools, machine learning models, and ...

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Showing results 21-40

All JobsSoftware Engineer Startup JobsSenior Software Engineer Startup JobsSenior Software Engineer Startup Jobs in Wisconsin

Senior Software Engineer Startup information

See Wisconsin salary details

$76.2K

$144.6K

$193.8K

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

As of Sep 2, 2026, the average yearly pay for senior software engineer startup in Wisconsin is $144,632.00, according to ZipRecruiter salary data. Most workers in this role earn between $123,600.00 and $163,000.00 per year, depending on experience, location, and employer.

What does a senior software engineer do at a startup?

A Senior Software Engineer at a startup is responsible for designing, developing, and maintaining the core software products or services. They often take on a broad range of tasks, including coding, code reviews, system architecture, and mentoring junior team members. In a startup environment, they may also contribute to product decisions, help set technical direction, and quickly adapt to changing priorities. Their role is critical in building scalable, reliable solutions while fostering innovation and collaboration within a small, fast-paced team.

What are some unique challenges senior software engineers face when working at a startup compared to a larger company?

Senior Software Engineers at startups often navigate a fast-paced, rapidly changing environment where priorities can shift quickly. Unlike at larger organizations with established processes and specialized teams, startup engineers may wear multiple hats, handling everything from architecture decisions to hands-on coding and even DevOps tasks. This role typically requires a high degree of autonomy and the ability to make impactful technical decisions with limited resources. The collaborative nature means frequent interaction with product managers, designers, and often even company leadership, creating opportunities for broad influence but also demanding strong communication and adaptability.

What are the key skills and qualifications needed to thrive as a senior software engineer at a startup, and why are they important?

To thrive as a Senior Software Engineer at a startup, you need advanced programming abilities, architectural design experience, and a solid understanding of software development lifecycles, typically backed by a bachelor's degree in computer science or a related field. Familiarity with modern frameworks, cloud platforms (like AWS or Azure), version control systems (such as Git), and agile methodologies is essential, with certifications in relevant technologies being advantageous. Strong problem-solving, adaptability, and effective communication skills help you navigate the dynamic startup environment and mentor junior team members. These skills are crucial to rapidly building scalable solutions, driving innovation, and supporting business growth in a fast-paced and often ambiguous setting.

What is the difference between Senior Software Engineer Startup vs Software Engineer Startup?

AspectSenior Software Engineer StartupSoftware Engineer Startup
Required CredentialsBachelor's/Master's in CS or related field, 3+ years experienceBachelor's in CS or related field, 0-2 years experience
Work EnvironmentFast-paced startup, leadership responsibilities, mentorshipCollaborative team, learning-focused, entry-level to mid-level tasks
Employer & Industry UsageTech startups, scale-ups, innovative projectsEarly-stage startups, product development teams
Common Search & ComparisonHigher responsibility, technical expertise, leadershipLearning opportunities, foundational skills, growth potential

The main difference between a Senior Software Engineer Startup and a Software Engineer Startup lies in experience, responsibilities, and leadership. Senior Software Engineers typically have more experience, take on mentorship roles, and handle complex projects, while Software Engineers are often in entry to mid-level positions focused on skill development and supporting team tasks.

How much does a senior software engineer startup make?

A senior software engineer at a startup typically earns between $100,000 and $160,000 annually, depending on location, experience, and company size. Compensation may also include stock options or equity, especially in early-stage startups, and often requires proficiency in programming languages like Python, Java, or JavaScript.

Is there a shortage of senior software engineers?

There is a high demand for senior software engineers across many industries due to the ongoing need for advanced technical skills, experience with programming languages like Java, Python, and cloud platforms, and leadership abilities. This demand often results in competitive salaries and opportunities, especially for those with strong problem-solving skills and experience in fast-paced startup environments.

What are the most commonly searched types of Software Engineer Startup jobs in Wisconsin?

The most popular types of Software Engineer Startup jobs in Wisconsin are:

What are popular job titles related to Senior Software Engineer Startup jobs in Wisconsin?

For Senior Software Engineer Startup jobs in Wisconsin, the most frequently searched job titles are:

What job categories do people searching Senior Software Engineer Startup jobs in Wisconsin look for?

The top searched job categories for Senior Software Engineer Startup jobs in Wisconsin are:

What cities in Wisconsin are hiring for Senior Software Engineer Startup jobs?

Cities in Wisconsin with the most Senior Software Engineer Startup job openings:

Senior Software Engineer Startup jobs near you

Senior Software Engineer

Koch Industries

Green Bay, WI • On-site

$119K - $157K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 20 days ago

Koch Industries rating

8.0

Company rating: 8.0 out of 10

Based on 53 frontline employees who took The Breakroom Quiz

136th of 545 rated manufacturers

Job description

Your Job
At KBX, we use technology, market-based solutions, and operational excellence to create value for our customers and businesses. As a Senior Software Engineer, you will design and deliver scalable software solutions that support our transportation and logistics platforms. This AI-native product engineering role requires strong technical judgment, modern engineering practices, and ownership to turn ambiguous business problems into production solutions quickly, safely, and with fewer handoffs.
Our Team
We are the KBX Managed Freight Engineering team, focused on transforming freight management with innovative, AI-powered software solutions. Working closely with product, engineering, and business partners, we build and support scalable applications for shipment tracking, exception management, and carrier connectivity. Our collaborative, cross-functional team embraces modern engineering practices and empowers each member to take ownership and deliver meaningful business results.
What You Will Do
  • Use AI-assisted and agentic engineering practices across discovery, design, coding, testing, documentation, and support while maintaining accountability for solution quality, security, and supportability
  • Collaborate directly with Product Managers, Product Owners, Technical Leads, and business stakeholders to clarify problems and requests, challenge assumptions, evaluate tradeoffs, and deliver valuable business outcomes
  • Design, develop, and maintain scalable full-stack software applications and services, writing clean, efficient, and maintainable code across backend and user-facing components
  • Design and implement complex backend services, APIs, integrations, core system components, and user-facing application features
  • Participate in architecture discussions, technology strategy, technical decision-making, code reviews, and technical design discussions to ensure adherence to engineering standards and best practices
  • Provide technical guidance and mentorship to software engineers while helping resolve complex technical challenges
  • Improve application performance, scalability, reliability, and observability
  • Support and maintain existing applications by troubleshooting and resolving production issues
  • Document code, technical designs, architectural decisions, and engineering processes
  • Share reusable patterns, lessons, and practices that improve engineering speed and quality across teams

Who You Are (Basic Qualifications)
  • Experience leveraging AI-powered development tools and solutions, including LLMs and agentic systems, while ensuring generated outputs meet standards for quality, security, maintainability, and business value
  • Experience designing, developing, and maintaining software applications using .NET and related application frameworks
  • Experience on backend services, APIs, integrations, data access patterns, and user-facing application features
  • Experience developing user-facing application features using modern front-end frameworks or technologies
  • Experience designing and developing APIs, integrations, service-oriented solutions, and translating business requirements into technical solutions
  • Experience supporting applications through the full software development lifecycle
  • Experience collaborating with product, engineering, and business stakeholders to deliver software solutions from discovery to production
  • Experience delivering software through small, cross-functional teams with broad individual ownership and accountability for outcomes
  • Experience leading technical activities including code reviews, complex designs, architecture discussions, and troubleshooting
  • Experience mentoring or providing technical guidance to other engineers

What Will Put You Ahead
  • Experience incorporating AI capabilities into enterprise software solutions
  • Experience working on large software development teams delivering enterprise-scale applications
  • Experience in transportation, logistics , supply chain, fleet management, or related industries
  • E xperience using modern frameworks such as React, Angular, or Vue
  • Experience designing and implementing microservices and distributed systems
  • Experience with cloud-native development, containerization, and DevOps practices
  • Experience with test strategy, test planning, and automated testing frameworks
  • Experience improving system observability, monitoring, and operational excellence
  • Experience working in Agile product development environments
  • Experience with relational and document databases such as PostgreSQL and MongoDB

At Koch companies, we are entrepreneurs. This means we openly challenge the status quo, find new ways to create value and get rewarded for our individual contributions. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate's knowledge, skills, abilities, and geographic location. If you have questions, please speak to your recruiter about the flexibility and detail of our compensation philosophy.
Hiring Philosophy
All Koch companies value diversity of thought, perspectives, aptitudes, experiences, and backgrounds. We are Military Ready and Second Chance employers. Learn more about our hiring philosophy here .
Who We Are
As a Koch company, KBX provides the global transportation, logistics and technology solutions that help our customers deliver life's essentials to people all over the world. We develop and deploy cutting-edge technologies to deliver better solutions for increasingly complex supply chains. Our team of tenacious problem-solvers are driven to create real, long-term value for our customers.
At Koch, employees are empowered to do what they do best to make life better. Learn how our business philosophy helps employees unleash their potential while creating value for themselves and the company.
Our Benefits
Our goal is for each employee, and their families, to live fulfilling and healthy lives. We provide essential resources and support to build and maintain physical, financial, and emotional strength - focusing on overall wellbeing so you can focus on what matters most. Our benefits plan includes - medical, dental, vision, flexible spending and health savings accounts, life insurance, ADD, disability, retirement, paid vacation/time off, educational assistance, and may also include infertility assistance, paid parental leave and adoption assistance. Specific eligibility criteria is set by the applicable Summary Plan Description, policy or guideline and benefits may vary by geographic region. If you have questions on what benefits apply to you, please speak to your recruiter.
Additionally, everyone has individual work and personal needs. We seek to enable the best work environment that helps you and the business work together to produce superior results.
Equal Opportunities
Equal Opportunity Employer, including disability and protected veteran status. Except where prohibited by state law, some offers of employment are conditioned upon successfully passing a drug test. This employer uses E-Verify. Please click here for additional information. (For Illinois E-Verify information click here , aquí , or tu ).

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