Top C# Jobs in Philadelphia, PA

Develop and enhance software in C++ on Linux, create analytical tools for financial data, and collaborate with research analysts.

Develop software and enhance systems in C++ on Linux, while collaborating with analysts and engineers to create data processing tools.

Develop and maintain infrastructure for market data feeds, focusing on performance and latency in a real-time financial environment.

The Senior Backend Engineer will design and maintain Azure SQL databases, optimize performance, automate deployments, and collaborate with teams on best practices and development.

The Senior Backend Engineer will develop backend solutions using .NET/C# and modern architecture, focusing on cloud services and databases, while managing client projects.

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.

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

The Senior Software Engineer will develop and maintain client-side applications, improve installation workflows, and ensure enterprise deployment support for cybersecurity products.

Design and build performance-critical components in C++. Require expertise in multithreaded systems, CI/CD pipelines, and GTK integration, as well as Python scripting.

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.

Develop and maintain the C# SDK for Supabase, ensuring a seamless experience for .NET developers, while engaging with the community and collaborating across teams.

Seeking a Senior Software Developer for developing high-performance distributed systems for media workflows, including video transcoding and content delivery.

The Software Engineer will analyze, rank, and improve AI-generated code, providing feedback for reinforcement learning in a remote role.

The role involves training large-language models to improve code generation, reviewing and editing AI-generated code, and providing feedback for reinforcement learning refinement.

Senior C++ Engineer responsible for developing high-performance image processing solutions, leading architecture discussions, and mentoring junior engineers in an Agile environment.

Train large-language models to improve code quality by comparing snippets, providing feedback, and refining AI-generated code. Requires strong communication skills and attention to detail.

Review, rank, repair, and refactor AI-generated code to improve correctness, performance, and style. Provide detailed written feedback and edits for RLHF pipelines, converting expert judgments into signals used to train models. Work asynchronously as a remote 1099 contractor.

Contribute to and optimize the performance of ClickHouse, assist with debugging, collaborate with teams, and engage with the open-source community.

Design and implement high-performance system software for medical devices, collaborating with hardware engineers and ensuring adherence to clinical standards.

Design and develop scalable services/APIs using C#/.NET/.NET Core, collaborate during SDLC, mentor junior engineers, and ensure code quality.

Lead a team to develop SaaS solutions while coding and mentoring engineers. Responsible for technical leadership and team management.

Design high-performance C++ libraries for automated PCB design challenges, mentoring peers and shaping technical direction while collaborating with experts in various fields.

The Junior Software Engineer will develop high-performance C++ software for scientific workloads, optimize code, and collaborate within a cross-functional team.

The C# / .NET Developer will design and maintain middleware applications, build Shopify integrations, and support a mobile app backend in a remote work environment.