Top C# Jobs

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 productize mission-focused software for deployment across Department of Defense environments. Responsibilities include removing customer-specific dependencies, abstracting configurations, building authorization and key-management interfaces, and supporting Java, C++, cryptography, encryption libraries, and OpenBao services. The role also involves migrating code across security environments, applying software best practices, testing, defect resolution, project planning, and collaboration with technical teams and clients.

Develop and maintain modular software tools and platforms for interactive LEGO experiences using C#/.NET, AvaloniaUI, and Python. Collaborate cross-functionally, improve developer toolchains and automation pipelines, ensure quality through code reviews and automated testing, contribute to architecture, integrate cloud and backend services, and mentor junior engineers. The role emphasizes ownership, scalability, security, data privacy, agile practices, and continuous 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, build, and maintain web pages and web applications end-to-end. Coordinate with other development teams (D365 CRM, D365 Finance & Ops, Azure, mobile, MFA). Enhance and support multiple systems including Client Portal, Payroll Processing, SharePoint, Data Factory, and Integration Services. Gather and document requirements, participate in usability testing, optimize code for performance and reliability, and troubleshoot issues while collaborating with stakeholders.

Develop and maintain C#/.NET applications. Requires 5+ years C# experience plus knowledge of C/C++, VB, ActiveX, COM objects, and IPC. MATLAB experience is a plus. Strong communication, organization, teamwork, and a relevant bachelor's degree required.

Develop and maintain full stack applications: design, implement, and test frontend (React/TypeScript) and backend (C#/ASP.NET) components, produce specs and test documentation, collaborate with cross‑functional teams including firmware engineers, follow QA and engineering best practices, and contribute to high‑quality UI/UX. On-site in Charlotte, NC; background and drug screening required.

Design, extend, and operate enterprise-scale Ceph clusters and core subsystems in C++; optimize performance, implement multi-site DR, integrate with Kubernetes and CI/CD, build automation, observability, encryption/KMS, and maintain production-grade SOPs and documentation.

Develop C# libraries to control and automate test instruments for avionics ATE. Convert C libraries to C#, implement measurement methods, read manufacturer manuals, and verify functionality in a lab environment to support Air Force sustainment programs.

Lead re-architecture and modernization of a legacy C++ execution kernel, improve performance, memory and concurrency behavior, diagnose production issues, and provide technical leadership across design, code review, and cross-functional collaboration.

Build and enhance an exam development platform using Angular front-end and C# backend. Collaborate with product and design teams, ensure performance and responsive UX, follow CI/CD and automated testing best practices, perform code reviews, troubleshoot issues, mentor junior developers, and incorporate improvements including AI/ML retrieval-based solutions.

Build and test scalable SaaS features using ReactJS and C# .NET. Develop single-page applications, design REST API endpoints, create asynchronous backend services, and contribute throughout the SDLC. Collaborate with developers, product analysts, and UI/UX designers in an agile environment. Deliver code within sprint cycles, help define feature scope, solve complex problems, and support the transition from on-premise products to cloud-based architecture.

Design, develop, test, maintain, and support full-stack business applications using .NET, C#, Angular, APIs, integrations, and SQL Server. Translate backlog requirements into reliable solutions, troubleshoot production defects, improve performance, reduce technical debt, participate in reviews and testing, support releases, document systems, and mentor junior and mid-level engineers. Collaborate with product, architecture, QA, DevOps, infrastructure, DBA, and business teams in a hybrid Austin environment.

Design, develop, test, and optimize high-fidelity C++ emulators for SPARC-based flight computers and mission-critical space flight hardware. Integrate emulation capabilities into flight and ground software workflows, meet demanding performance requirements, document and test solutions, and contribute to CI/CD pipelines. The role requires collaboration with architects, engineers, and customers in a mission-focused environment, with potential DoD clearance eligibility.

Remote backend C# developer to build and optimize a high-load spot-exchange matching engine. Improve performance and API throughput, implement business features, write unit and integration tests, work with .NET Core and PostgreSQL on AWS, and apply multithreading, async, and distributed systems concepts.

Develop and maintain ASP.NET Core APIs and service components for a C# desktop product; own medium-sized features end-to-end; contribute to Google Cloud-to-Azure migration (adapters, data migration, validation); build CI/CD, container deployments, observability, runbooks, and mentor junior engineers.

Design, build, and support scalable cloud-native APIs and services in C#/.NET on Azure. Modernize desktop apps into distributed services, implement CI/CD, automated testing, observability, and mentor engineering team members while participating in Agile development and architecture reviews.

The role involves developing C++ applications for Credit Risk systems, implementing pricing models, and supporting strategic initiatives in the finance sector.

The Senior Software Engineer will design, develop, and maintain software applications using Python, C#, C++, and Linux, while collaborating with cross-functional teams to optimize performance and user experience.

Design and develop software for ROVs, AUVs, and subsea tooling on Windows and Linux. Handle requirements, design, implementation, and testing; maintain revision control; prepare technical procedures; mentor junior engineers; serve as technical lead on projects; collaborate across divisions and communicate with technical and nontechnical stakeholders. Up to 25% onshore travel with potential occasional offshore travel.

The role involves designing and implementing onboard software in C++, collaborating with cross-functional teams, and building autonomy systems for intelligent vehicles.

Design, implement, and optimize scalable backend software solutions. Collaborate with team members and uphold coding standards while troubleshooting and maintaining software performance.

Lead and implement observability strategy for Real‑Time Collections, perform hands‑on low‑latency C++ work, embed observability practices across SDLC, define SLIs/SLOs and dashboards, establish GitOps/API-driven observability workflows, and influence platform architecture and reliability.

Develop geocoding and location-based APIs, optimize algorithms and data structures, and maintain scalable C++ code for Esri's software products.

Design, implement, and optimize high-performance C++ software for remote sensor data processing (OPIR) on Linux. Develop image analysis, detection, and tracking algorithms; improve scalability and reliability; participate in code reviews, integration, testing, and Agile development; collaborate with algorithms, systems, and integration teams.