Top Senior C# Jobs in Chicago, IL

Design, develop, and optimize high-performance trading systems; mentor junior engineers and enhance system monitoring for secure trade execution.

The Senior C++ Engineer will design, build, and support video advertising software, manage the development lifecycle, collaborate with teams, and mentor junior engineers.

The Lead Software Engineer will build and maintain a high-performance distributed online video ad server, collaborating with project stakeholders and mentoring junior engineers.

Lead the software development lifecycle for a video advertising platform, mentor junior engineers, and ensure quality and performance standards are met.

Design, build, and support video advertising platform features, collaborating with global teams and ensuring high-quality software development processes.

Design, develop, and optimize high-performance trading applications, maintain real-time systems, and analyze complex technical problems. Collaborate with teams and ensure software quality standards.

The role involves using C++ for software development focusing on object-oriented principles, with projects on Linux and Windows operating systems. It requires strong debugging and testing skills, along with adaptability to new technologies.

The C++ Developer will engage in software development focusing heavily on C++ and object-oriented programming, primarily for Linux and Windows systems.

The role involves developing applications using .Net and SharePoint technologies, requiring a strong background in web application development and multiple programming languages.

Lead a team to develop SaaS solutions while coding and mentoring engineers. Responsible for technical leadership and team management.

Design and implement high-performance system software for medical devices, collaborating with hardware engineers and ensuring adherence to clinical standards.

Design and develop scalable services/APIs using C#/.NET/.NET Core, collaborate during SDLC, mentor junior engineers, and ensure code quality.

The position involves building and optimizing automated trading infrastructure, developing trading algorithms, and creating scalable applications in a team environment.

Develop high-performance, low-latency trading systems for options market making, collaborating with traders and quants to enhance performance and trading infrastructure.

As a Senior Engineer on the Market Data team, you will design high-performance libraries for trading systems, ensuring fast and reliable market data delivery while collaborating with various teams.

Design high-performance C++ libraries for automated PCB design challenges, mentoring peers and shaping technical direction while collaborating with experts in various fields.

Design, implement, and maintain low-latency C++ applications for trading strategy execution, optimizing performance, and collaborating with traders and engineers.

The Senior Backend Engineer will design and maintain Azure SQL databases, optimize performance, automate deployments, and collaborate with teams on best practices and development.

The Senior Backend Engineer will develop backend solutions using .NET/C# and modern architecture, focusing on cloud services and databases, while managing client projects.

You will develop and maintain components of the LLVM based toolchain, collaborating with the community while ensuring platform-specific optimizations and tests.

Architect and implement scalable React/TypeScript user interfaces for web and Electron desktop apps. Integrate native modules (C++/Objective-C), work with REST APIs under zero-knowledge principles, optimize performance and accessibility, lead code reviews, mentor engineers, and participate in CI/CD and automated testing to deliver secure, high-quality features.

The Senior Software Engineer will develop and maintain client-side applications, improve installation workflows, and ensure enterprise deployment support for cybersecurity products.

Develop user interface components for ArcGIS Pro using C# and WPF, work in an agile team, and design software solutions for raster and imagery processing.

Develop and maintain the C# SDK for Supabase, ensuring a seamless experience for .NET developers, while engaging with the community and collaborating across teams.