3B Staffing LLC is hiring: .NET/React Developer in Lisle

Job Title:

Senior Software Engineer (.NET/React Developer)
Primary Location:

Lisle, IL (4 days Onsite)
Position Type:

Long Term

Contract

OVERVIEW

Looking for a Senior Software Engineer (.NET/React Developer) to contribute to the My International Sales (MIS) product initiative. The ideal candidate is proficient in both .NET Core and ReactJS, has experience across the full software development lifecycle using an Agile framework, and is skilled in modernizing and enhancing existing web applications while ensuring long-term application performance. This person should be comfortable supporting mission-critical systems while leading modernization initiatives that improve scalability, reliability, automation, security, observability, and long-term maintainability, and should work effectively in a collaborative, fast-paced environment.

WHAT YOU BRING TO THE ROLE. (IDEAL EXPERIENCE)
Minimum 5+ years of development experience with ASP.NET / .NET Core using C# (and/or VB.NET) in Visual Studio IDE
Minimum 3+ years of development experience with ReactJS
Experience developing Web APIs in .NET Core
Experience writing extensive unit tests and Web API testing
Good understanding of security, performance, and scalability considerations
Experience modernizing legacy ASP.NET Web Forms applications to .NET Core + React
Strong understanding of HTML, XML, CSS, JSON, JavaScript, and jQuery
Expert-level knowledge of SQL, including writing complex queries and stored procedures
Skilled in working with SOAP and REST services
Good understanding of object-oriented programming (OOP) principles
Understanding of the GitFlow branching strategy and deployments
Familiarity with deploying to Kubernetes clusters
Understanding of SOLID design principles
Experience with code refactoring and design patterns
Familiarity with ADO or JIRA
Experience with CI/CD, deployment pipelines, infrastructure-as-code, containerization, or DevOps practices
Familiarity with TFS and Git
Familiarity with Azure
Strong understanding of technical best practices to support an agile environment
Familiarity with Telerik is a plus
Ability to work independently and as part of a team
Bachelor's degree in Computer Science, Information Systems, Engineering, or a related field; equivalent experience may be considered
WHAT YOU'LL DO. (SKILLS USED IN THIS POSITION)

Contribute full stack development work (.NET Core and ReactJS) to the My International Sales (MIS) product initiative
Participate in the full software development lifecycle using an Agile framework
Modernize and enhance existing web applications, including migrating legacy ASP.NET Web Forms applications to .NET Core + React
Develop and test Web APIs in .NET Core, including writing extensive unit tests
Support mission-critical systems while leading modernization initiatives that improve scalability, reliability, automation, security, observability, and long-term maintainability
Write and optimize complex SQL queries and stored procedures
Work with SOAP and REST services and apply OOP and SOLID design principles in day-to-day development
Collaborate using GitFlow branching strategy, CI/CD pipelines, and containerized deployments (including Kubernetes)
Work effectively in a collaborative, fast-paced environment alongside cross-functional team members