Senior Software Engineer

Senior Software Engineer Skip to main content#Senior Software Engineer page is loaded## Senior Software Engineer Apply locations:
Downers Grove ILtime type:
Full time posted on:
Posted Todayjob requisition :
R0002280

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 Dev Ops-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 do**## ##
** 1. Architect and deliver scalable software solutions
*** Design and implement secure, scalable, and cloud-native applications using modern Microsoft technologies
* Apply API-first, modular, and service-oriented architecture principles to platform development
* Lead technical design decisions that align with long-term system scalability and maintainability
* Ensure solutions meet performance, reliability, and business expectations## ##
** 2. Drive modernization and system evolution
*** Lead initiatives to modernize legacy .NET Framework applications through refactoring or cloud migration
* Identify and eliminate technical debt while preserving system stability
* Champion best practices in software architecture, design patterns, and coding standards
* Partner with infrastructure and security teams to align modernization efforts with enterprise strategy## ##
** 3. Strengthen engineering quality and Dev Ops maturity
*** Promote CI/CD pipelines, automated testing, and secure development practices
* Implement observability strategies, including logging, monitoring, and performance tracking
* Participate in and lead code reviews, ensuring high-quality, maintainable code
* Improve engineering workflows to increase speed without compromising quality## ##
** 4. Enable cross-functional execution
*** Collaborate with product owners, business stakeholders, and analysts to translate requirements into technical solutions
* Communicate complex technical concepts in clear, business-aligned language
* Align engineering deliverables with business priorities, timelines, and operational requirements
* Support production systems and respond to critical incidents with urgency and ownership## ##
** 5. Lead through technical influence and ownership
*** Take ownership of application performance, uptime, and customer impact
* Mentor developers and contribute to the growth of engineering standards and practices
* Drive accountability for outcomes across projects and initiatives
* Contribute to continuous improvement of team processes and technical capabilities#
** What you bring
*** Bachelor’s degree in Computer Science, Information Technology, Engineering, or related field (or equivalent experience)
* 5+ years of software development experience within the Microsoft technology stack
* Deep expertise in modern .NET (6/7/8+), ASP.NET Core, Web API, and Entity Framework Core
* Strong experience with ASP.NET MVC, modern front-end frameworks (Angular or React), and Type Script/JavaScript…