Top Senior C# Jobs

Develop, verify, and deploy mission-critical flight software/configurations for Dragon crewed and cargo vehicles. Build tools for automated deployment and verification, analyze test results and bugs, troubleshoot flight hardware/software with interdisciplinary teams, plan and execute vehicle testing, support mission operations as flight software specialist, and roll out software changes to the vehicle fleet. Occasional travel required.

Develop high-performance client-side systems in C++/WebAssembly, optimize multiplayer protocols, and collaborate on impactful features for Figma's design platform.

Develop scalable and efficient geocoding algorithms and APIs while optimizing C++ code for performance and memory consumption. Collaborate with engineers on geocoding solutions.

Develop and maintain C++ machine control and data analysis software for advanced mask inspection systems. Collaborate with multidisciplinary teams to define system requirements, optimize performance, support integration and testing, and resolve customer escalations. Work in Linux environments and leverage RPC/REST APIs, containerization, and modern UI frameworks as needed.

Develop C++ software components for a 3D geospatial mapping platform. Collaborate on architecture, design, and implement algorithms and systems for data optimization and rendering.

Develop and maintain a high-performance image processing system, optimizing algorithms for efficiency, and collaborating with hardware engineers for seamless integration.

Develop, implement, and support store systems using CBasic on the IBM 4690 retail platform. Troubleshoot, resolve issues, and work with cross-functional teams. Prioritize tasks, meet SLAs, and communicate effectively. Potential contract-to-hire engagement with Genpact in Woonsocket, RI.

Senior C++ Developer to design, develop, and support large distributed C++ applications on Unix/Linux. Responsibilities include SQL integration, algorithm and OOP design, debugging, and delivering production-ready software for long-term projects.

Designs and develops complex applications, authors technical specs, mentors junior developers, implements UI and backend code, unit tests and debugs, ensures quality/security/compliance, and produces technical documentation.

Develop XAML-based front-end components and prototypes using Expression Blend and Visual Studio. Build reusable WPF controls following MVVM and coding standards, produce production-ready XAML working with C#, create interactive high-fidelity prototypes, fix bugs, and refine UI fit-and-finish.

Develop and maintain front-, middle- and back-office platforms for investment banks, including trade capture systems and real-time multithreaded risk portals. Participate in full software development lifecycle, design system components, write and test C/C++ code on UNIX, work with relational databases, and communicate technical solutions to non-technical stakeholders.

Senior mobile engineer to develop and maintain multi-platform mobile applications using C#, Objective-C and Java. Responsibilities include designing and testing Android APIs, applying Java design patterns, optimizing multithreading, networking and algorithms, and collaborating with QA to diagnose and fix bugs across Android, iOS and legacy/mobile OS platforms.

Seeking a Senior iOS Developer to design and build high-performance iOS applications. Requires 5+ years in iOS development with Swift and Objective-C, experience with REST services, and skills in data persistence frameworks. Occasional travel may be needed.

Lead full‑stack development of web applications using C#, ASP.NET (Web Forms or MVC), HTML, CSS, and JavaScript libraries. Code, test, integrate, and document solutions; mentor teams; design complex systems; work with databases (preferred MongoDB) and deploy to web servers (preferred IIS).

Develop and maintain EDA tools for transistor-level analysis. Enhance architecture for timing analysis and implement machine learning technologies for improved solutions.

Seeking a Senior Software Engineer skilled in C++, algorithm optimization, and multi-agent systems to develop autonomous decision-making frameworks for mission-critical applications.

Seeking a Senior C++ Software Engineer to design algorithms for multi-agent systems, focusing on optimization, real-time decision-making, and autonomy. Collaborate with teams and translate complex concepts into production systems.

Develop and implement customer-facing .NET applications. Work with the Customer Solutions lead to design ASP.NET GUIs, prototype rich user interfaces, program in C# (.NET 4.5), and perform SQL Server development and database programming.

Design, develop and maintain Windows-based application platforms and SDKs for wearable devices. Collaborate with product, design, test, and global teams to implement new features, support existing code, write unit tests, and follow Agile development and SDLC best practices.

Senior game developer to design and build online gaming products using C++, OpenGL/OpenGL ES and XNA. Requires graphics and OOP fundamentals, cross-platform development, SDLC experience, project management and client-facing skills. US work authorization and willingness to relocate to CA required. Contract (Corp-to-Corp).

Design, develop, test, document, and implement C#/.NET applications per technical specifications. Interpret business requirements, produce architectural and technical documentation, create unit test plans and harnesses, estimate tasks, validate accessibility and secure coding, and collaborate with infrastructure/network/server teams to resolve application issues.

Senior C# Developer for a 6+ month project in Plano, TX. Must have strong C# expertise, basic SQL/Sybase experience, and preferably Windows Mobile 6.5 mobility experience.

Develop and optimize C/C++ applications handling heavy data; write SQL, stored procedures, triggers; build RMI calls; work across Unix and Windows; perform database optimization; support monthly production cycles; use Autosys and scripting. Good communication skills required. Contract for 6 months.

Senior programmer/analyst responsible for designing, developing, deploying, and supporting .NET applications. Participate in SDLC, create unit/integration tests, troubleshoot issues, maintain applications, and document work. Provide on-call support and work across multiple projects using TFS and SQL Server.

Develop and maintain C#/.NET applications and ETL processes using Pentaho and Oracle 11g. Work with XML, Excel/VBA, and TFS for data integration and automation. Collaborate with stakeholders, perform application development, and support BI/ETL solutions. Strong communication and local interview availability required.