Top Entry Level C# Jobs

Develop high-performance C++ systems for systematic investing, including real-time data processing, low-latency trading execution, and machine-learning inference tools. Design scalable distributed systems and resilient data pipelines, maintain critical production platforms, and build greenfield solutions in collaboration with quantitative researchers. Ensure software correctness, reliability, performance, and fail-safe operation in live-market environments while aligning technical work with business value.

Develop and test high-performance C++ applications for trading platforms. Collaborate with traders and experienced engineers to translate requirements into efficient solutions, while monitoring, profiling, and troubleshooting systems for reliability and stability. The role provides mentorship and exposure to the complete trading-system development lifecycle, including production support, performance tuning, multithreaded programming, and real-time systems.

Develop and test high-performance C++ applications for trading platforms. Collaborate with traders and senior engineers to translate requirements into efficient solutions, while monitoring, profiling, troubleshooting, and improving system reliability. Gain hands-on experience across the full trading-system development lifecycle in an on-site, highly collaborative environment.

Provides Tier 3 support and development for business-critical applications, telemetry services, monitoring platforms, and infrastructure solutions. Responsibilities include C#/.NET development, SQL Server administration, production troubleshooting, incident response, deployments, automation, observability, database performance, disaster recovery, and technical documentation. Collaborates with engineering, infrastructure, and operations teams to restore services, identify root causes, improve reliability, and maintain secure production environments.

Develop and maintain desktop, web, database, and middleware components using C#, HTML5, JavaScript, SQL Server, and RESTful APIs. Work includes real-time processing, concurrency, asynchronous and multithreaded programming, WinForms, web services, security, database scripting, and migration from Flex to AngularJS. Collaborate within an agile team, support build and testing infrastructure, maintain legacy code, and contribute to architectural improvements.

Develop and maintain full-stack C# software for aircraft maintenance detection and reporting. Build responsive front-end interfaces, backend services, APIs, and anomaly detection tools; test and debug applications; and collaborate in an Agile team. The role supports Navy F/A-18 fleet readiness, requires local travel to NAVAIR Oceana, and requires U.S. citizenship with the ability to obtain a DoD Secret clearance.

Develop software using C# and Oracle or SQL databases, including PL/SQL or T-SQL. Preferred experience includes web services, WCF, Web API, and Silverlight. The interview process includes an initial phone interview followed by an in-person interview in Miamisburg, Ohio, or Jacksonville, Florida, depending on the candidate’s location.

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

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.

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.

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.

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.