Top Entry Level C# Jobs

Develop modern C++ systems for systematic investing, including low-latency data processing, high-frequency trading execution, quantitative analytics libraries, and machine-learning inference tools. Collaborate with quantitative researchers to build scalable, reliable, and performant production platforms, design distributed data pipelines, evaluate system architectures, and maintain fail-safe live-market trading infrastructure.

Join an on-site Chicago team building high-performance C++ trading systems. Contribute to design, development, testing, profiling, and troubleshooting. Collaborate with traders and senior engineers, receive mentorship, and gain exposure to the full lifecycle of low-latency trading platform development.

Join an on-site Chicago team building high-performance C++ trading systems. Design, develop, test, profile, and troubleshoot low-latency applications while collaborating with traders and senior engineers. Receive mentorship, training on markets, and exposure to production lifecycle and performance tuning.

Develop and maintain backend services and RESTful APIs using C# and .NET. Design and optimize MySQL schemas and queries, troubleshoot production and staging issues, improve performance and scalability, document architecture, and uphold code quality and security. Collaborate with cross-functional teams in a fully remote environment while contributing to development best practices and continuous improvement.

Develop and integrate C/C++ software for Naval projects, including submarine-launched ballistic missile systems. Apply Agile development practices, perform technical analysis and problem-solving, collaborate with engineering teams and customers, and support schedule-driven software activities. The role is on-site in Dahlgren, Virginia, requires an active Secret clearance, and involves occasional travel between local work sites.

Develop and maintain ultra-low-latency C++ trading software for options market making. Responsibilities include building exchange connectivity for new markets, optimizing order execution algorithms, developing automated pricing systems, tuning performance, and supporting trading infrastructure. The role involves full lifecycle software development, automated testing, peer code review, and close collaboration with traders, quantitative researchers, FPGA engineers, data analytics, and UI developers.

The role involves developing software using C and C++, with a focus on Linux systems, shell programming, and database interactions using Oracle SQL.

Strong C++ programming experience required, with familiarity in Solaris and Linux, and skills in shell programming and Java/J2EE.

The C# Developer will develop applications for data integration between systems, requiring proficiency in C# and a willingness to learn.

Develop and maintain C/C++ applications on Linux, using command-line toolchains and CI/CD pipelines to compile, test, containerize, and deliver software artifacts. Apply Git, code reviews, static analysis, troubleshooting, design patterns, architectural principles, and SOLID practices to build scalable systems. Collaborate with development, operations, security, and business teams to ensure reliable, secure software delivery.

Develop and maintain software tools and platforms for interactive LEGO products using C# .NET, C/C++, AvaloniaUI, and Python. Collaborate on developer-focused tools, architecture, automated testing, CI/CD pipelines, and toolchain automation. Improve software quality, performance, scalability, and developer efficiency while integrating cloud endpoints and backend services. Mentor junior engineers and take ownership of delivered solutions in an agile environment.

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.

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.

Develop Linux-based client-server applications using C++, with experience in OOAD, Agile methodologies, and working with databases like Oracle.

Contribute to Axion, Applied Intuition's defense platform, by designing high-performance C++ software, enhancing simulation environments, and collaborating with teams to ensure software meets operational demands.

Work on high-performance, low-latency C++ systems for trading: maintain core systems, implement lower-risk features, execute individual projects, and collaborate with Quant and Trading. Focus areas include concurrency, networking, profiling, and performance tuning while supporting multithreaded, asynchronous, and distributed architectures.

Full-stack C#/.NET developer responsible for maintaining and enhancing application code, building JavaScript UIs, working with SQL Server (PostgreSQL a plus), and collaborating with remote and internal teams. Requires strong organizational, analytical, and communication skills and willingness to learn new tools and environments.

We are seeking a C++ Engineer with experience in multi-threading. Responsibilities include developing and maintaining software applications. Candidates should have a strong background in C++ programming.

Seeking a C++ Engineer with experience in multi-threading. Responsibilities include developing and maintaining software applications using C++.

Seeking a dot net developer proficient in C++ and multi-threading to support software development projects.

Develop C# WinForms desktop applications integrating USB and serial interfaces and firmware. Collaborate with technical customers to gather requirements, design high-level architecture, implement code to specification, coordinate with other developers, and track and resolve software defects.

Develop customer-directed desktop applications using C# and C++, focusing on WinForms and Excel plugin development. Work in Agile teams to gather requirements, plan modules, write code, script automation, coordinate with other developers, and track/resolve defects. Exposure to EDA tools (Cadence Allegro, Mentor Graphics Expedition) is a plus. Position is a short-term (3 month) contract starting ASAP.

The Software Engineer designs, develops, tests, and maintains business applications, working on full-stack projects or specializing in frontend or backend.