Lead Software Engineer (.NET)
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Before you apply
Salary$120k – $130k
LocationDowners Grove IL
Work modehybrid
Typefull-time
SeniorityLead
Experience8+ yrs
Company size1,001–5,000 people
PostedOct 9, 2026 · 3w ago
Verified live1d ago
At a glanceSummarised by Seekless from the posting.
Bachelor's degree in a related field, or equivalent experience
8+ years building production software in C# and .NET, including modern .NET, ASP.NET Core, and Entity Framework Core
Strong SQL Server skills: data modeling, query tuning, performance
Modern front-end knowledge (JavaScript/TypeScript)
Hands-on Azure experience (App Service, Functions, Azure SQL, Storage, Application Insights, or similar)
Experience designing RESTful APIs and system integrations
A track record of improving or modernizing legacy .NET Framework systems
Experience setting engineering practices (Git-based workflows, CI/CD, testing, code review) and mentoring other developers
Comfort explaining technical tradeoffs to non-technical stakeholders
Transportation, logistics, LTL, or supply chain experience
Hands-on React or Angular experience
API gateway, microservices, or identity/authorization experience
Experience leading Scrum, Agile, or Kanban teams
Hands-on use of AI coding tools or building AI-enabled features
Skills
C#
.NET 8+
ASP.NET Core
React
Azure
SQL Server
Entity Framework Core
JavaScript/TypeScript
Azure App Service
Azure Functions
Azure SQL
Azure Storage
Application Insights
RESTful APIs
Git
CI/CD
Benefits
Medical
Dental
Vision
401(k)
Paid time off
About the company
Roadrunner is growing, and we’re looking for a highly motivated Lead Software Engineer (.NET) to join our winning team. If you’re results-driven and want a fast-growing company with strong growth and earnings potential, apply today!
Much of our operation runs on software we build ourselves. We’re modernizing our core platforms, moving off legacy systems and onto cloud-native, API-first services on Azure. We also have AI use cases running in production and are expanding them carefully.
About the role
As Lead Software Engineer (.NET), you’ll drive engineering practices and hands-on design within the applications team, working closely with our Director of Architecture. Your work directly affects how freight moves.
This role may provide opportunities for future leadership growth based on business needs and individual performance. You’ll start as a hands-on lead, and as you show leadership, you can take on broader responsibility for people, priorities, and technical direction.
What you’ll do
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Design and build scalable, secure services and web apps (C#, .NET 8+, ASP.NET Core, React, Azure)
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Lead the modernization of legacy applications: refactoring, re-platforming, and replacing them step by step
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Design APIs and integrations with internal systems, customers, and partners
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Own production quality: CI/CD, automated testing, observability, and secure coding
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Mentor engineers on the team through code reviews, design discussions, and day-to-day coaching
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Work directly with operations and business leaders to turn real freight problems into software
What you bring
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Bachelor’s degree in a related field, or equivalent experience
•
8+ years building production software in C# and .NET, including modern .NET, ASP.NET Core, and Entity Framework Core
•
Strong SQL Server skills: data modeling, query tuning, performance
•
Modern front-end knowledge (JavaScript/TypeScript); backend depth matters most.
•
Hands-on Azure experience (App Service, Functions, Azure SQL, Storage, Application Insights, or similar)
•
Experience designing RESTful APIs and system integrations
•
A track record of improving or modernizing legacy .NET Framework systems
•
Experience setting engineering practices (Git-based workflows, CI/CD, testing, code review) and mentoring other developers
•
Comfort explaining technical tradeoffs to non-technical stakeholders
Nice to have
•
Transportation, logistics, LTL, or supply chain experience
•
Hands-on React or Angular experience
•
API gateway, microservices, or identity/authorization experience
•
Experience leading Scrum, Agile, or Kanban teams
•
Hands-on use of AI coding tools or building AI-enabled features
Compensation & Setup
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Pay: $120,000 – $130,000 base salary
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Location: Hybrid – Downers Grove, IL
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Benefits: Comprehensive benefits package including medical, dental, vision, 401(k), and paid time off
Physical Demands and Work Environment
The physical demands and work environment described here are representative of those an employee encounters while performing the essential functions of this position. Reasonable accommodations may be made to enable qualified individuals with disabilities to perform the essential functions.
Physical Demands
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Sedentary physical activity performing non- strenuous daily activities of an administrative nature.
•
While performing the duties of the job, the employee is regularly required to sit, walk, stand, reach/handle items, work with the fingers, and talk and hear others in conversations via the phone or in person.
Work Environment
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Sedentary physical activity performing non- strenuous daily activities of an administrative nature.
•
While performing the duties of the job, the employee is regularly required to sit, walk, stand, reach/handle items, work with the fingers, and talk and hear others in conversations via the phone or in person.
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Up to 5% travel; occasional after-hours support based on business needs
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Hybrid schedule: 3 days a week in the Downers Grove office
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Occasional after-hours escalations for production issues
* The above statements reflect the general details necessary to describe the principal functions of the position and are not intended to be all inclusive. The position and any of the requirements listed above are subject to change at any time according to the changing needs of the company.