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Senior C# Developer Jobs

30 Job Offers

Senior Delphi Software developer with C#
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Join 3Shape in Kyiv as a Senior Delphi/C# Developer. Create advanced CAD software for global dental labs and clinics, working with 3D algorithms and OpenGL. We seek a skilled developer with strong OOP and math skills, passionate about 3D geometry. Enjoy meaningful work, professional growth, and c...
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Ukraine , Kyiv
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Not provided
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3Shape
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Until further notice
Senior C++ Developer - Search Core
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Belgrade, Berlin, London
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Perplexity
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Senior C++ Developer with Java knowledge
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Join our Pune R&D centre as a Senior C++ Developer with Java knowledge. You will design robust systems using advanced C++, OOPS, and multithreading in Linux environments. Expertise in network protocols, cryptography, and STL is essential. Contribute to innovative device development in a dynamic, ...
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India , Pune
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JISA Softech Private Limited
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Senior C++ Developer
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Join a Front Office team at SIG, designing cutting-edge low-latency trading systems in Bala Cynwyd, PA. As a Senior C++ Developer, you'll leverage 10+ years of experience to optimize performance and reduce latency. Collaborate directly with traders and technologists to innovate and deploy solutio...
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United States , Bala Cynwyd (Philadelphia Area), Pennsylvania
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Susquehanna International Group
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Senior C# .NET Core Developer
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Join a dynamic team in Skopje as a Senior C# .NET Core Developer. You will build the core backend for a leading malware protection solution using .NET Core, Redis, and RabbitMQ. This role requires 7+ years of experience and expertise in message brokers. Enjoy a hybrid work model, global exchange ...
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North Macedonia , Skopje
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Hornetsecurity
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Senior C# Developer
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Join a growing SaaS business in Kings Lynn as a Senior C# Developer. Focus on modernising platforms using .Net Core, C#, and Angular/React in a full-stack, front-end-leaning role. Enjoy a hybrid model (3 days onsite), private healthcare, and clear career progression. Shape architecture and influe...
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United Kingdom , Kings Lynn
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50000.00 - 60000.00 GBP / Year
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Cooper Lomaz
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Senior C# Developer – Pricing Engines
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Join a fast-paced trading tech team in Amsterdam as a Senior C# Developer. You will build and optimize a high-performance, low-latency pricing engine for FX, bonds, and rates. Your expertise in C#/.NET, concurrency, and financial markets will be key. Work in a collaborative, full-lifecycle DevOps...
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Netherlands , Amsterdam
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Levy Professionals
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Senior C++ Developer
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Join Saphetor in Athens as a Senior C++ Developer. Work on the core VarSome Clinical platform, analyzing genetic big-data for global healthcare. Leverage 4+ years of C++ expertise (C++17, STL, multithreading) in an agile, cloud-based environment. Enjoy competitive compensation while pioneering te...
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Greece , Athens
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Saphetor
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Senior C++ Developer
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Join our team in Cluj as a Senior C++ Developer. You will enhance and optimize a growing product using modern C++ (11+), focusing on performance, multi-threading, and Linux. We offer medical insurance, professional development, and a collaborative Agile environment. Apply your 6+ years of experie...
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Romania , Cluj
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ddroidd
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Senior C# Developer
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Lead the development of low-latency trading platforms at Barclays in London. Utilize your expertise in .Net 8 and Kubernetes to build high-performance, scalable systems. Collaborate directly with quant teams and traders. Enjoy top benefits including private medical care and a competitive pension.
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United Kingdom , London
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Barclays
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About the Senior C# Developer role

Senior C# Developer jobs represent a critical and high-demand career path for experienced software engineers specializing in the Microsoft technology stack. Professionals in these roles are not just coders; they are technical leaders, architects, and problem-solvers responsible for designing, building, and maintaining robust, scalable, and secure software applications. A Senior C# Developer typically operates at the heart of complex software development lifecycles, translating business requirements into elegant technical solutions using the .NET framework and its modern cross-platform successor, .NET Core/.NET 5+.

The core responsibilities of a Senior C# Developer are multifaceted. They are entrusted with the architectural design of applications, making pivotal decisions on patterns like MVC, Microservices, or Domain-Driven Design. They write clean, maintainable, and efficient C# code, often leveraging advanced language features and frameworks such as ASP.NET Core for web APIs, Entity Framework Core for data access, and WPF or Blazor for user interfaces. Beyond development, their day involves rigorous code reviews, mentoring mid-level and junior developers, and collaborating closely with product managers, business analysts, and QA teams to ensure project alignment and quality. They are also key players in implementing DevOps practices, including continuous integration and deployment (CI/CD) pipelines using tools like Azure DevOps, Jenkins, or GitHub Actions.

Typical skills and requirements for these senior-level jobs go deep into technical expertise. Employers seek candidates with 5-8+ years of hands-on experience in C# and the .NET ecosystem. Proficiency in object-oriented programming (OOP), SOLID principles, and design patterns is fundamental. A strong grasp of database technologies, both SQL (e.g., SQL Server) and often NoSQL, is essential, as is experience with RESTful API development and integration. Modern Senior C# Developer roles also demand familiarity with cloud platforms, primarily Microsoft Azure, including services like Azure App Service, Azure Functions, and Azure SQL. Knowledge of containerization with Docker and orchestration with Kubernetes is increasingly common. Crucially, soft skills are paramount: leadership, clear communication, analytical problem-solving, and the ability to manage projects and guide technical strategy are what distinguish a senior professional.

Ultimately, pursuing Senior C# Developer jobs means stepping into a role that blends deep technical mastery with leadership and strategic influence. These professionals are the backbone of enterprise software development, creating the systems that power businesses, from internal line-of-business applications to high-traffic customer-facing platforms, ensuring performance, security, and long-term maintainability in a constantly evolving digital landscape.