Top C++ Jobs in Chicago, IL

Design and develop low latency, high-performance trading systems. Optimize code and solutions for hardware efficiency, ensuring seamless application integration.

Lead development of core client systems and engine-level infrastructure in Unity/C#. Diagnose and fix cross-cutting performance issues, upgrade third-party SDKs, evolve build tooling, produce design docs, scope multi-week infrastructure initiatives, mentor engineers, and drive profiling, optimization, and architecture changes to enable future features.

FreeWheel seeks a C++ Engineer to design, build, and support its video advertising platform, responsible for the software development lifecycle and collaborating with project stakeholders.

Develop and maintain custom options valuation and risk-management systems. Collaborate with traders, risk managers, and quants to gather requirements, design solutions, implement high-performance code, troubleshoot issues, document models and tests, and improve scalability, accuracy, and performance of pricing systems.

As a C++ Software Engineer, you will optimize performance for latency-critical systems, collaborate with traders and quants, and ensure code correctness in a fast-paced environment.

Develop and enhance performance-critical C++ applications for ultra-low latency trading systems, collaborating across teams to analyze and optimize performance.

The role involves designing, developing, and testing C++ applications for trading systems, collaborating with traders, and ensuring application reliability.

The Sr. Software Engineer will design and optimize ad delivery systems, implement solutions on AWS, and provide technical leadership while mentoring junior engineers.

The Lead Software Engineer will build and maintain a high-performance video Ad Server, overseeing the software development lifecycle and mentoring a team.

Design, build, and scale low-latency ad-serving systems and data/model-driven features. Optimize algorithms and architectures for performance and cloud cost, extend observability, participate in on-call rotations, and produce runbooks and documentation.

Build and scale Buyercloud ad-serving systems that process billions of auctions daily. Design data- and model-driven features, optimize performance and cost, extend observability, participate in on-call rotations, produce documentation and playbooks, and support production incidents.

Design, develop, and field high-performance Ground Control Station and C2 software using C++/Qt/QML and QGroundControl. Lead architecture and technical direction, mentor engineers, define APIs/ICDs, debug integration/latency issues, support field tests, implement post-mission debrief tools, and ensure interoperability with C2 standards.

Contract .NET developer/consultant role requiring 5+ years experience building web applications using C#, .NET, Entity Framework, SQL Server, LINQ, WCF, MVVM/MVC, and JavaScript frameworks (JSRender, Angular, Node, jQuery, HTML5). 6+ month contract; rate DOE.

10-week C++ software engineering internship working on low-latency, multithreaded, distributed trading systems. Interns design, implement, and maintain components, collaborate with Quant and Trading, and deliver projects from ideation through production while using performance profiling, debugging tools, and modern C++ techniques.

Work on high-performance, low-latency C++ systems for trading: maintain core systems, implement lower-risk features, execute individual projects, and collaborate with Quant and Trading. Focus areas include concurrency, networking, profiling, and performance tuning while supporting multithreaded, asynchronous, and distributed architectures.

Join the UI team for a 10-week summer internship to design, build, test, and maintain real-time C# .NET desktop trading applications. Collaborate with traders, quants, and engineers, implement unit and integration tests, evaluate UI technologies, and participate in Agile/Scrum and application support processes. Interns own a project and present outcomes at program end.

Design, build, test, and support web and client-server applications; lead custom SharePoint intranet development; implement front-end features using C#/.NET and JavaScript frameworks; optimize performance and scalability; produce technical specifications, documentation, QA, and user training; maintain .NET certifications.

Lead design and global rollout of a high-performance core market data and execution platform. Implement and optimize low-latency market data ingestion, normalization, distribution, and execution components in modern C++. Own deployment, monitoring, profiling, and production optimization while collaborating closely with quants and technical traders to enable systematic pricing and trading strategies.

Lead development of high-performance C++ trading systems and core platform components, build and optimize exchange connectivity (market data and order flow), implement trading algorithms, improve stability and observability, troubleshoot production issues, and collaborate closely with quants and traders to iterate on design and deployment.

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.

Design, build, and maintain backend workflow orchestration and state management for analyzer integrations on the ECL platform. Modernize legacy .NET systems, ensure reliable event-driven operations, collaborate with integration, infrastructure, and QA teams, and preserve workflow behavior during knowledge transfer.

Design, build, and maintain backend workflow orchestration and analyzer integrations for the ECL platform. Manage analyzer state transitions, runtime event handling, and legacy modernization; extract shared .NET libraries, collaborate with integration and QA, and support knowledge transfer.

Build and optimize high-performance C/C++ and Rust server applications and feed handlers for market data. Implement parsers, petabyte-scale processing tools, and low-latency, high-throughput optimizations. Collaborate on build/deploy/CI, monitoring, and ensure reliable feature rollouts.

Remote backend C# developer to build and optimize a high-load spot-exchange matching engine. Improve performance and API throughput, implement business features, write unit and integration tests, work with .NET Core and PostgreSQL on AWS, and apply multithreading, async, and distributed systems concepts.