Senior Net Software Developer Jobs in Naperville, IL

Accelerate your career at RXO RXO is a leading provider of transportation solutions. With cutting-edge technology at the center, we're revolutionizing the industry with our massive network and commitment to finding solutions for every challenge. We create more efficient ways for shippers and carriers to transport goods across North America.

Compensation for this role is $140,000.00 -160,000 00 The role may also be eligible for bonus or commission pay. Actual compensation may vary due to factors such as experience and skill set.

As a Senior .NET Software Engineer at RXO you'll combine deep hands-on development expertise with strong technical leadership. In this role, you'll be responsible for building high-quality, full stack applications while guiding technical design decisions, setting development standards, and mentoring engineers. You'll partner closely with product, QA and architecture teams while leading development efforts across distributed and offshore teams to ensure alignment on priorities, timelines, and quality.

Please note that this role follows a hybrid work schedule, requiring onsite attendance Monday through Thursday, with the option to work remotely on Fridays, from our Charlotte, Chicago, Atlanta or Marietta office locations.

What your day-to-day will look like:

• Lead the design and development of full stack applications using.NET 8, C#, and ASP.NET Core
• Provide technical leadership across backend services, APIs and frontend applications (React/Angular)
• Translate business and technical requirements into scalable, maintainable solutions
• Drive architectural decisions including service design, communication patterns and data modeling
• Coordinate sprint execution and technical direction with offshore development teams
• Guide data strategy across relational (SQL Server) and NoSQL (Couchbase) environments
• Ensure performance, scalability, security and reliability across systems
• Establish and enforce best practices around CI/CD, testing and observability
• Support centralized logging and monitoring practices to improve system visibility and troubleshooting
• Mentor engineers, lead code reviews and promote long-term code quality and maintainability
• Champion responsible use of AI-assisted development while maintaining engineering standards

At a minimum, you'll need:

• Bachelor's degree or equivalent related work or military experience
• 6 years of experience in software development with strong focus on.NET 8, C#, and ASP.NET Core
• Experience building and scaling full stack applications (backend + frontend)
• Strong understanding of API design, microservices architecture, and distributed systems
• Experience working with relational and NoSQL databases
• Proven ability to lead technical design and mentor engineers
• Experience working in Agile/Scrum environments and coordinating with offshore teams

It'd be great if you also have:

• Experience with React or Angular
• Experience with cloud platforms (Azure preferred)
• Experience implementing CI/CD pipelines and modern DevOps practices
• Familiarity with logging and observability tools (ELK or similar)
• Experience leveraging AI tools in a development environment

Does this sound like you? Check out what else RXO has to offer.

Our Benefits

• Competitive pay
• Paid time off includes: up to 8 holidays, up to 2 floating Diversity Days, Hourly: Earn up to 13 days PTO/ Salary: Earn up to 15 days PTO, up to 40 hours bereavement leave, up to 16 hours volunteer time, jury duty, at least 2 weeks family bonding leave, up to 40 hours prenatal care leave
• 401(k) retirement plan with up to 5% company match
• Insurance: health, prescription, dental, vision, basic and supplemental life, short and long-term disability, accidental death and personal loss, business travel, legal services, ID theft, accident, critical illness, hospital indemnity
• Employee Assistance Program (EAP)
• Tuition reimbursement, adoption assistance
• Tax-Advantaged Accounts: Health Savings Account, Health Care Flexible Spending Account, Dependent Care Flexible Spending Account, Commuter Spending Account
• Health Reimbursement Arrangement

Our Culture

Our values are the key to our unique culture and our ability to deliver for everyone we serve.

We do great things when we are inclusive and work together. To perform with excellence, we learn from one another, value diverse perspectives, operate safely and build strong relationships.

The Next Step Ready to join our team? We'd love to hear from you. Fill out an application now and join our talent community to learn about future opportunities. We are proud to be an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. All applicants who receive a conditional offer of employment may be required to take and pass a pre-employment drug test.