Senior Software Engineer

Koch Business Solutions, LP; Green Bay (WI); On-site; USD 110,000 - 170,000; Full time

Job summary

KBX, a Koch company, is hiring a Senior Software Engineer to design, develop, and maintain scalable full-stack software that powers our AI-enabled transport and logistics platforms. You will collaborate with product and business teams, implement APIs and services, and uphold engineering standards across the stack.

You will mentor peers, drive performance improvements, and contribute to architecture decisions while delivering high-quality software in a fast-paced environment.

Qualifications

• Experience with AI-powered development tools and LLMs.
• Experience with .NET and related frameworks.
• Strong full-stack development with backend APIs and data access.
• Experience with modern front-end frameworks.
• Experience designing APIs and service-oriented solutions.
• Experience supporting the full software development lifecycle.
• Experience collaborating with stakeholders to deliver production software.
• Experience delivering software in small cross-functional teams.
• Experience leading technical activities and code reviews.
• Experience mentoring other engineers.

Responsibilities

• Design, develop, and maintain scalable full-stack software applications and services.
• Collaborate with Product Managers and stakeholders to clarify problems and deliver value.
• Lead architecture discussions and maintain engineering standards.
• Mentor engineers and improve performance, reliability, observability.
• Improve application performance and observability.
• Troubleshoot and maintain existing applications in production.

Skills

.NET

Full-stack development

APIs & integrations

Frontend development

Mentoring

Code reviews

Agile / DevOps

Tools

React

Angular

Vue

PostgreSQL

MongoDB

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.
• Strong full-stack application development experience, with emphasis 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.
• Experience 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.

• medical
• dental
• vision
• flexible spending and health savings accounts
• life insurance
• ADD
• disability
• retirement
• paid vacation/time off
• educational assistance
• infertility assistance
• paid parental leave
• 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, aqui, or tu).