Top C++ Jobs

Software Engineers at Citadel develop, maintain, and support high-performance trading platforms, focusing on custom software solutions and system stability.

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, implement, and optimize high-performance C++ APIs exposing a mortgage analytics library for interest rate modeling, prepayment/default analysis, derivative valuation, hedging, and forecasting. Collaborate with business, model development, validation, and IT; improve library performance, safety, reliability, and usability; deploy and test production code.

Design, implement, test, and deploy high-performance C++ APIs exposing a mortgage analytics quantitative library for interest rate modeling, prepayment/default analysis, derivative valuation, hedging, and forecasting. Improve performance, reliability, and usability of the library and collaborate with business, model development, validation, and IT teams.

Lead development and design for global credit-card authorization systems. Create technical designs, implement complex features in C, write C++ unit tests (Google Test), define interfaces, improve CI/CD and development processes, lead code reviews, mentor junior engineers, and collaborate with product and other technical leads.

Design, build, and maintain scalable backend and distributed systems while operating in AI-augmented workflows. Validate AI-generated outputs, contribute to architecture and system evolution, produce technical documentation and prompts, mentor peers, and collaborate with Product, UX, and Engineering teams to ensure reliability, observability, and engineering quality.

Software Engineers at Citadel develop software solutions for trading platforms, optimizing performance and functionality, and support trading activities.

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.

As a Software Development Engineer, you will create high-performance Linux software components, ensure system reliability, collaborate with teams, and design security features for containers in cloud environments.

Design, develop, and integrate software solutions; analyze system requirements and customize applications; assist with releases; mentor junior engineers; collaborate with QA; troubleshoot complex issues; conduct user training; provide technical leadership on routine projects.

The Market Data Engineer will design and implement high-performance market data systems, focusing on trading infrastructure, performance optimization, and system resiliency.

Design, develop, and own high-performance C++ cloud-based ad-serving and distributed systems. Mentor junior engineers, collaborate with stakeholders, optimize algorithms, deploy and maintain Linux-based services, use Snowflake and Aerospike, review code, and improve system reliability and scalability.

Design, implement, and optimize high-concurrency, low-latency ad-delivery systems. Architect and maintain AWS-based, containerized (Kubernetes) infrastructure, mentor engineers, produce technical documentation, and support production reliability and scalability.

Lead design, development, testing, documentation, and rollout of software and web applications. Mentor and train junior engineers, provide technical leadership, collaborate with stakeholders, evaluate performance metrics, and ensure timely delivery within budget.

The Staff Software Development Engineer will enhance core systems, collaborate with engineering teams, define software specifications, and mentor junior engineers.

The role involves building and supporting production-level trading systems in C++ for credit and rates products, collaborating with traders and quantitative researchers.

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.

Implement and integrate mortgage prepayment models into the firm's C++ analytics library. Deliver production-grade, performant, modular code with comprehensive unit/integration tests, API integration, versioning, and documentation. Collaborate with quants, model validation, business, and technology teams to ensure backward compatibility and operational readiness.

Implement mortgage prepayment models in production-grade C++ within the firms analytics library. Ensure performance, API integration, tests, versioning, documentation, and collaboration with business, model development, validation, and technology teams.

The Senior Software Engineer develops and maintains Sports Trading applications using .NET and SQL Server, enhancing existing functions and providing technical guidance.

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.

Lead design and implementation of high-performance GPU-accelerated software using C++ and CUDA. Develop and optimize CUDA kernels for signal and image processing, integrate GPU components with systems, and collaborate with hardware, signal processing, and systems teams. Apply DevSecOps/CI-CD practices, profile/optimize performance, and develop software interfacing with FPGAs, GPUs, and embedded SoCs for defense systems.