Top Senior C# Jobs in Milwaukee, WI

Design, implement, test, and modernize backend services and integrations (TypeScript/Node.js and C++). Lead large projects, write technical specifications and API contracts, enforce coding standards, coach engineers, and drive legacy-to-modern migrations within online banking and core systems.

Develop scalable C++ software that defines and enforces endpoint behavior across millions of managed Windows endpoints. Responsibilities include implementing features, improving platform performance, shipping production code, designing new systems, writing architecture documents, defining subsystem contracts, and collaborating with server, UI, product, and design teams. The role requires deep Windows systems and kernel-driver expertise, with preferred experience in WHQL, minifilter or WFP drivers, macOS Endpoint Security, and Linux kernel development.

Build and lead high-performance browser features in modern C++ and Chromium, including tracker blocking, subscription integrations, and responsiveness monitoring. Own complex projects from proposal through post-mortem, solve ambiguous technical problems, make architecture decisions, collaborate asynchronously with product and design, and use metrics to evaluate outcomes in a large-scale consumer codebase.

Build and maintain scalable, cloud-native APIs and high-value core system components using .NET and related technologies. Lead software architecture and testing discussions, enhance core offerings, collaborate cross-functionally, and ensure quality through code reviews, unit testing, functional testing, telemetry, and performance tuning. Mentor teammates and contribute to continuous technical and process improvement.

Develop and test C++ software for FactoryTalk Optix HMI and control-system applications across Windows and Linux. Responsibilities include subsystem design, requirements documentation, implementation, unit and automated testing, debugging, code and design reviews, anomaly analysis, and product quality validation. The role collaborates with global Agile teams, improves development and test automation practices, researches technologies, communicates design concepts, and mentors other engineers.

Leads and develops a software engineering team while contributing hands-on to enterprise application design, coding, testing, code reviews, production support, and technical decisions. Builds scalable solutions using C#, ASP.NET, SQL Server, and modern web technologies; partners with product and business stakeholders; supports Agile delivery, CI/CD, troubleshooting, root cause analysis, and engineering best practices. The role also includes mentoring engineers, monitoring delivery and operational metrics, and driving continuous improvement.

Design and develop low-latency, high-throughput distributed database kernels for massively parallel analytics. Responsibilities include architecture, modern C++ development, MPI/OpenMP query execution, SIMD and hardware optimization, distributed networking, database internals, in-database machine learning, vector indexing, performance tuning, code reviews, mentoring, and resolving scalability issues across large-scale clustered systems.

Design and develop low-latency, high-throughput distributed database kernels for massively parallel analytics. Responsibilities include query execution, columnar storage, transaction management, cluster coordination, hardware-aware optimization, SIMD vectorization, RDMA networking, in-database machine learning, vector indexing, performance tuning, architecture reviews, code reviews, mentoring, and resolving scalability issues.

Develop, design, test, and maintain C# applications on a collaborative Scrum team. Work on new system development and enhancements, participate in implementations, and produce/update documentation. Full-stack skills and teamwork required; JavaScript experience preferred.

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.

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

The role involves managing an embedded C/C++ software team's build and release process using Clearcase and migrating to Perforce/GIT, along with supporting development tools and infrastructure.

Seeking a Build & Release Engineer to support an embedded C/C++ development team, managing tools and infrastructure. Responsibilities include Clearcase administration, build infrastructure development, and migration to GIT/Perforce tools.

The role involves managing and supporting an embedded C/C++ development team's build infrastructure and tools, requiring experience in Clearcase, Git, Jenkins, and scripting languages.

The C++ Developer role requires expertise in wireless technology, embedded C++ programming, and Linux OS with experience ranging from 7 to 10 years.

The job requires expertise in wireless technology and substantial experience in embedded C++ programming on Linux OS, aiming for skilled developers.

Develop and optimize ultra-low-latency, high-performance trading infrastructure in modern C++. Implement and tune order execution, market data connectivity, multi-threaded systems, and risk modules. Profile and benchmark real-time systems, collaborate with quants and traders, and maintain robust, fault-tolerant continuous trading operations.