.Net Technical Lead - Chicago, IL (F2F interview required)

R Systems; Chicago (IL); On-site; USD 120,000 - 150,000; Full time

Job summary

R Systems in Chicago, IL is seeking a highly skilled Technical Lead to guide the design and development of modern web applications. This role demands expertise in ASP.NET (Framework & .NET 10) and React, along with strong leadership abilities to mentor team members and drive engineering excellence.

The ideal candidate should have over 12 years of software development experience, proficient in back-end and front-end technologies and tools such as GitHub Copilot. A Bachelor's or Master's degree in Computer Science or a related field is required.

Qualifications

• 12+ years of experience in software development.
• Strong expertise in ASP.NET Framework and .NET (including .NET 10).
• Strong hands-on experience with React and modern frontend development.

Responsibilities

• Lead architecture, design, and development of enterprise applications.
• Mentor developers and provide technical guidance.
• Collaborate with cross-functional teams to develop secure, scalable applications.

Skills

ASP.NET Framework

.NET 10

React

C#

REST APIs

Git

SQL Server

PostgreSQL

Oracle

Azure

Education

Bachelor's or Master's degree in Computer Science, Engineering, or a related field

Tools

GitHub Copilot

Docker

Kubernetes

Job description

In-person interview required at Chicago, IL location.

Job Description

We are looking for a highly skilled Technical Lead with strong hands‑on experience in ASP.NET (Framework & .NET 10) and React to lead the design and development of modern, scalable web applications. The ideal candidate will provide technical leadership, mentor team members, and leverage productivity tools such as GitHub Copilot to drive engineering excellence and delivery efficiency.

Key Responsibilities

Technical Leadership

Lead architecture, design, and development of enterprise applications using ASP.NET Framework, .NET 10, and React

Define and enforce coding standards, design guidelines, and best practices

Perform code reviews and ensure high code quality, maintainability, and performance

Mentor developers and provide technical guidance across backend and frontend stacks

Drive adoption of modern development practices and AI assisted tools such as GitHub Copilot

Application Development

Design and develop secure, scalable, and high performance web applications

Build RESTful and microservice based APIs using ASP.NET Framework and .NET 10

Integrate frontend applications with backend services and databases

Optimize application performance, security, and reliability

Collaborate with Product Owners, Architects, QA, DevOps, and UI/UX teams

Participate in sprint planning, estimation, and technical design discussions

Translate functional and nonfunctional requirements into technical solutions

Support releases, production issues, and root‑cause analysis

Quality & Tooling

Guide teams in effective usage of GitHub Copilot for code generation, refactoring, and documentation

Encourage automated testing, code scanning, and secure coding practices

Ensure proper logging, monitoring, and error handling

Required Skills & Qualifications

Technical Skills

12+ years of experience in software development

Strong expertise in ASP.NET Framework and .NET (including .NET 10)

Strong hands‑on experience with React and modern frontend development

Proficiency in C#, REST APIs, Web Services

Experience with SQL Server / PostgreSQL / Oracle

Strong understanding of OOP, SOLID principles, design patterns

Experience using Git, GitHub workflows, pull requests, and code reviews

Working knowledge of GitHub Copilot or similar AI assisted coding tools

Leadership & Soft Skills

Proven experience leading or mentoring development teams

Excellent problem solving and analytical skills

Strong communication and cross team collaboration abilities

Ability to balance hands‑on development with leadership responsibilities

Preferred / Nice to Have Skills

Experience with Azure

Knowledge of Microservices architecture

Familiarity with Docker, Kubernetes

Experience with EF Core, Dapper

Awareness of application security and compliance standards

Education

Bachelor s or Master s degree in Computer Science, Engineering, or a related field.