Top C# Jobs

Design, develop, test, and maintain full-stack C# software tools for aircraft maintenance and anomaly detection. Build responsive front-end interfaces, backend services, and APIs. Collaborate in an Agile team, deploy and troubleshoot software at NAS Whidbey, and write clean, scalable code to support F/A-18 fleet readiness.

Design, build, and maintain high-throughput, low-latency C++ systems for symbol resolution. Develop scalable APIs, participate in design/code reviews, monitor and troubleshoot production, champion best practices, and mentor teammates.

Architect and develop Packet Forwarding Features for PTX Series Routers, engage with customers, work with test teams, and sustain existing features.

Develop and scale high-performance, multithreaded C# desktop trading UI components within an Agile team. Evaluate new technologies, profile .NET memory/performance, write unit tests, collaborate across teams, and manage multiple concurrent projects.

Design, build, and maintain scalable, reliable distributed systems and backend services for a Linux-based cyber-recovery platform. Drive architecture, write and test C/Python code, develop RESTful APIs, improve performance and resilience, resolve production issues, participate in code reviews, mentor junior engineers, and collaborate with Product, QA, DevOps, and Security teams.

Design, implement, and optimize C++ trading applications for equities, including trading ticket functionality, negotiation workflows, and post-trade processing. Collaborate with stakeholders and cross-functional teams, debug large codebases, improve performance and scalability, and partner with QA to deliver resilient, low-latency distributed systems.

Support and enhance the Geneva portfolio management platform and related Windows applications. Integrate Geneva for inputs/outputs/reporting, develop new modules, test and deploy code, resolve production issues, and collaborate with business users to deliver requirements.

Develop and maintain DIAMONDS and other enterprise applications using C# and Oracle/PL/SQL. Participate in full software lifecycle (design, coding, testing, configuration management, release, IV&V support), build WPF/Prism features, apply secure coding and static analysis tools, support sustainment and customer-facing requirements gathering, and follow CMMI/Agile processes and Git/Azure DevOps workflows.

Work with implementations to migrate customer data into the MemberSuite SaaS platform. Develop C#/ASP.NET tools, write SQL queries, use database management tools and SQL Server, troubleshoot data issues, meet deadlines, and coordinate with stakeholders to deliver migration projects.

Design and implement onboard application software in modern C++, collaborate with cross-functional teams to align interfaces and execution models across the autonomy stack, and contribute to building autonomy systems for on-road and off-road vehicles.

Design and implement high-performance C++ backend systems for defense autonomy products. Build scalable, reliable infrastructure for contested environments, collaborate with researchers and customers, own architecture through deployment, and support Ann Arbor site growth while interfacing with DoD programs.

Develop high-performance C++ framework software enabling collaborative autonomy across air, ground, and maritime domains. Integrate with domain platforms, optimize real-time performance, automate workflows, and collaborate with autonomy engineers, product teams, and customers to deliver robust, scalable multi-agent systems.

Develop, implement, and support low-latency trading algorithms and analytics (multi-leg spreads, baskets, market making, VWAP). Collaborate with clients and SMEs to design scalable, customizable strategies; integrate into FlexStrategy Server; enhance back-testing framework; perform developer testing, QA coordination, documentation, and client support for deployments and troubleshooting.

Join a talent community for C++ engineers to get priority access to future roles. Ideal candidates have strong modern C++ (C++11+) skills, experience in graphics/geometry or audio/image/video processing, performance optimization or cross-platform development, and familiarity with tools like Qt and CMake. Remote collaboration, strong problem-solving, and good communication are required; bonus for C++ integration with Python, JavaScript, Swift, Objective-C, AI, web, or mobile.

The C++ Software Engineer will develop, enhance, and maintain financial software at oneZero, focusing on performance and reliability. Responsibilities include collaborating with teams and resolving production issues.

Design, execute, analyze, and report C-UAS test and evaluation for RF, EO/IR, UI, network, and software integrations. Develop front- and back-end software, draft test plans and reports, conduct test setup/teardown, operate small drones, develop metrics, and brief leadership on findings and recommendations.

Lead C# .NET Backend Developer to architect, build, and maintain scalable microservices and RESTful APIs using .NET Core. Drive CI/CD, containerization (Docker), Kubernetes orchestration, and Azure deployments. Mentor developers, ensure code quality and security, collaborate with QA and product teams, and champion agile practices.

Develop, optimize, and maintain high-throughput C++ software for processing OPIR and remote sensing data on Linux. Lead small teams, implement algorithms for detection and tracking, improve performance and scalability, support integration/testing, participate in code reviews, mentor teammates, and work directly with customers through the software development cycle in an Agile environment.

Develop and optimize high-throughput C++ algorithms for remote sensor data exploitation (image analysis, detection, tracking). Prototype, integrate, and test software within government frameworks as part of an Agile team. Work full-time in-person in Boulder, CO and obtain/maintain DoD security clearance.

Develop, optimize, and integrate high-throughput C++ algorithms and multi-object tracking software for counter-UAS and remote sensing systems. Work in an Agile small-team environment to prototype, test, and deliver low-latency processing solutions within government frameworks.

The Senior Full Stack .NET Engineer designs and maintains software systems, manages API integrations, and works closely with cross-functional teams to improve internal platforms and resolve production issues.

Lead technical direction for a major product domain, reduce architectural debt, mentor engineers, standardize AI-agent workflows, and design scalable backend solutions integrating LLMs and cloud services. Drive cross-team RFCs, cookbook standards, and adopt agentic AI tooling while balancing security, quality, and delivery.

Design and optimize high-performance C++/CUDA libraries for GPU-based data processing. Improve multi-node GPU communication (UcxExchange), optimize Presto GPU query performance, and lead enhancements across Presto, Velox, and cuDF projects for efficient DataFrame and database acceleration.

Design, develop, troubleshoot, and debug software for databases, applications, tools, and networks using C++ and Java. Contribute to software architecture changes, work on mission-critical large-scale systems, and implement concurrent and parallel distributed algorithms in cloud environments while providing strong troubleshooting for distributed systems.

Seeking Emerging Modern C++ Developers to create maintainable code for math and physics challenges. Ideal for recent graduates with relevant skills in C++ and additional programming languages.