Senior Software Engineer

As a Senior Software Engineer, you will be involved in all aspects of the design, architecture, engineering, modernization, and maintenance of Roadrunner’s proprietary systems. Your focus will be on building scalable, secure, cloud-ready software solutions that improve business efficiency, operational visibility, and customer service.In this role, you'll own complex, multi-interface technical solutions from concept to delivery, not just contribute to them. You'll partner directly with business stakeholders, analysts, and technology leaders to surface opportunities, assess feasibility, and ship high-quality software. As a senior engineer, you'll lead engineering efforts, set the standard for modern development practices, and operate independently without needing a roadmap handed to you. If you thrive on accountability and technical breadth, this is your seat.As a Senior Engineer, you will lead the design and implementation of modern software architecture while promoting strong engineering standards, improving development efficiency, and mentoring fellow developers to advance the organization toward cloud-native, API-first, and DevOps-enabled delivery practices. Day to day, you will develop new systems, enhance existing applications, support and optimize the performance of production environments, integrate internal and external platforms, and partner closely with the business to solve operational challenges through technology.What you’ll do1. Architect and deliver scalable software solutionsDesign and implement secure, scalable, and cloud-native applications using modern Microsoft technologiesApply API-first, modular, and service-oriented architecture principles to platform developmentLead technical design decisions that align with long-term system scalability and maintainabilityEnsure solutions meet performance, reliability, and business expectations2. Drive modernization and system evolutionLead initiatives to modernize legacy .NET Framework applications through refactoring or cloud migrationIdentify and eliminate technical debt while preserving system stabilityChampion best practices in software architecture, design patterns, and coding standardsPartner with infrastructure and security teams to align modernization efforts with enterprise strategy3. Strengthen engineering quality and DevOps maturityPromote CI/CD pipelines, automated testing, and secure development practicesImplement observability strategies, including logging, monitoring, and performance trackingParticipate in and lead code reviews, ensuring high-quality, maintainable codeImprove engineering workflows to increase speed without compromising quality4. Enable cross-functional executionCollaborate with product owners, business stakeholders, and analysts to translate requirements into technical solutionsCommunicate complex technical concepts in clear, business-aligned languageAlign engineering deliverables with business priorities, timelines, and operational requirementsSupport production systems and respond to critical incidents with urgency and ownership5. Lead through technical influence and ownershipTake ownership of application performance, uptime, and customer impactMentor developers and contribute to the growth of engineering standards and practicesDrive accountability for outcomes across projects and initiativesContribute to continuous improvement of team processes and technical capabilitiesWhat you bringBachelor’s degree in Computer Science, Information Technology, Engineering, or related field (or equivalent experience)5+ years of software development experience within the Microsoft technology stackDeep expertise in modern .NET (6/7/8+), ASP.NET Core, Web API, and Entity Framework CoreStrong experience with ASP.NET MVC, modern front-end frameworks (Angular or React), and TypeScript/JavaScript ecosystemsAdvanced SQL Server expertise, including database design, performance tuning, and query optimizationExperience designing RESTful APIs, integrations, and service-oriented architecturesProven experience developing cloud-native applications, preferably within Microsoft AzureHands-on experience with Azure services such as App Service, Functions, Azure SQL, and Application InsightsExperience with CI/CD, Git-based source control, and platforms such as Azure DevOps or GitHub ActionsStrong foundation in application security and secure development practicesExperience with automated testing, observability, and performance monitoringDemonstrated ability to troubleshoot and resolve production issues efficientlyPreferred QualificationsExperience in transportation, logistics, freight, or supply chain systemsFamiliarity with Agile, Scrum, or Kanban delivery modelsExperience with API gateways, authentication/authorization, and API lifecycle managementTrack record of modernizing legacy systems through cloud migration or incremental refactoringExperience mentoring engineers and shaping engineering standardsHow you operateYou think in systems, not tasksYou own outcomes, not activityYou prioritize simplicity, scalability, and long-term maintainabilityYou move quickly while maintaining technical disciplineYou challenge assumptions constructively and back decisions with dataYou communicate clearly across both technical and non-technical audiencesYou proactively identify risks and solve problems before they escalateYou balance autonomy with strong collaboration across teamsAbout RoadrunnerWe’re not just moving freight; we’re reimagining long-haul shipping. Our Smart Network offers more direct long-haul metro-to-metro routes than any other nationwide LTL carrier in the United States, with service extending into Canada and Mexico and terminals across 40+ metro markets. Powered by AI and machine learning, our operations platform ensures real-time tracking, custodial control, and full shipment visibility. With driver teams executing over-the-road (OTR) moves — and no freight moving on rail — customers experience industry-leading transit times, minimal rehandling, and dramatically reduced risk of loss or damage.Our 900+ owner-operators benefit from scheduled freight, fewer touches by design, consistent long-haul density, and a differentiated metro-to-metro model that creates predictable earning opportunities.This precision and performance have earned Roadrunner national recognition by over 3,000 shippers, and was ranked this year #1 in Operations, #1 in Technology, and #1 in Value in the Quest for Quality Awards, as well as honors as a Top 100 Trucking Company by Inbound Logistics and a Top Tier Service Carrier by Mastio.We’re growing fast. Roadrunner is building something special with great people, a winning culture and a differentiated service offering in the marketplace. Join us today to grow your career!We Run Safe. We Run Smart. We Run Together.Compensation & SetupPay: $110,000–$130,000 base salaryLocation: Hybrid – Downers Grove, ILBenefits: Full benefits package including medical, dental, vision, 401(k), and paid time offTravel: Up to 5% travel; occasional after-hours support based on business needsPhysical Demands and Work EnvironmentThe 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 DemandsSedentary 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 EnvironmentSedentary 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.* 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.* Roadrunner is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.* We will not accept unsolicited candidates from external recruiters or recruiting agencies. Thank you!#LI-HybridDowners Grove, ILSummaryLocation: Downers Grove ILType: Full time