Top Senior C# Jobs in San Diego, CA

Design, develop, and deliver Dynamics 365 and Power Platform case management solutions. Gather technical requirements, build integrations and customizations, support data migration, create prototypes and demos, and drive high-quality implementations across discovery, build, test, and deploy phases while collaborating with clients and project teams.

The Senior Software Engineer will design high-performance systems, build features using Python and Django, mentor junior talent, and ensure system reliability through automated testing.

The Senior Software Engineer will develop sophisticated cloud-based systems, implement CI/CD automation, mentor peers, and lead technical discussions to enhance product efficiency in risk engineering.

Design, develop, test, and deploy .NET applications using C# and ASP.NET MVC. Create and optimize SQL databases and APIs, perform code reviews and debugging, collaborate with stakeholders and architects, deploy to staging/production, maintain applications, and stay current with .NET best practices.

Design and implement scalable full-stack solutions using .NET and React. Lead architecture, cloud migration (AWS/Azure), microservices, and API development. Mentor developers, perform code reviews, resolve production issues, manage client interactions, and drive delivery with a focus on performance, security, and multi-tenant SQL Server architectures.

Support customer and partner relationships by demonstrating radar value, lead integrations with C2/VMS/autonomous platforms, plan and execute installations, tune systems, provide technical support, analyze post-demo data, create training materials, collect feedback, and travel up to 50%.

Design, build, and deploy NICE CXOne contact center solutions and IVR call flows. Integrate backend services and APIs, implement skills-based routing, troubleshoot end-to-end call center applications, coordinate releases across agencies, and act as SME for CXOne deployments and support.

Design and own AI-agent-driven test workflows and the automated verification framework. Build test context, select models and tooling, validate AI-generated code and tests, operate test automation across UI/API/mobile/data, ensure security and compliance, mentor teams, and continuously improve agent orchestration and observability.

Design and develop full-stack features, focusing on backend systems with some frontend work, while modernizing applications and integrating AI tools.

Design and implement AI-powered educational software, focusing on generative AI systems, mentor peers, and ensure scalable, secure architecture.

The Senior Software Development Engineer will modernize a healthcare payer application using .NET and Angular, integrate AI models, and mentor junior engineers while working independently on complex tasks.

Design, build, and maintain RESTful, SOAP, and GraphQL APIs; integrate third-party services and databases; implement OAuth2/JWT authentication; optimize performance with caching and load-balancing; document APIs; use Postman/Swagger/OpenAPI/SoapUI; work with cloud platforms, containerization, automated testing, and SQL/NoSQL databases.

Develop and maintain .NET Core trading systems for Linux with service-oriented architecture and multi-threaded processing. Implement async, lock-free structures and distributed systems, write unit and integration tests, optimize SQL queries, design data structures and algorithms, and work with communication protocols (SignalR, gRPC, HTTP). Use PostgreSQL, Docker, and AWS in the deployment stack.

The Sr. Software Developer will design and develop full-stack applications using .NET, lead a team, and collaborate with stakeholders while leveraging AI technologies.

Build and ship full‑stack features for transportation management and other client products. Design and implement APIs and UIs, collaborate with product and design, own delivery, write modular testable code, troubleshoot and iterate quickly, and mentor peers.

Develop and maintain language frontends for the Joern platform for automated software vulnerability analysis, collaborating with a global team.

The Database Reliability Engineer manages and maintains cloud-based database infrastructures for SaaS applications, focusing on automation, process improvement, and collaboration with engineering teams.

The Senior Backend Engineer will design and optimize backend systems, work with cross-functional teams, and ensure security and performance for mobile games, primarily using C# and cloud services.

As a Senior Systems Engineer II for ECG Monitoring Applications, you will design software solutions for arrhythmia detection, manage system architecture, and ensure seamless integration while collaborating with cross-functional teams.

The Senior AI Engineer leads software implementation, mentors engineers, collaborates with product and DevOps teams, and ensures production reliability.

Design and develop backend services for an IAM platform, focusing on high performance, scalability, and security. Collaborate with teams to implement new features and maintain existing ones, ensuring compliance with regulations.

Design, build, and deliver Dataverse-first Dynamics 365 CE solutions across design, development, and post-go-live support. Own end-to-end technical delivery, build plugins/integrations, define data/security models, lead architecture workshops, mentor developers, and support sales and technical validation with Microsoft FastTrack.

Design, build, test, and maintain enterprise applications and integrations for VA healthcare modernization. Work in Agile teams to develop APIs, microservices, CI/CD pipelines, and DevSecOps practices, support legacy VistA/MUMPS systems, troubleshoot performance and integration issues, and ensure federal cybersecurity and compliance.

Senior technical leader responsible for architecting and delivering complex, distributed, cloud-native systems on Microsoft Azure; driving adoption of AI-assisted development tools; implementing observability, monitoring, and reliability practices; leading cross-team delivery, performance optimization, and incident response; and mentoring engineers in design and best practices.

Lead a hands-on engineering team to improve reliability, reduce technical debt, and maintain Greenshades' payroll/HR/tax products. Drive AI-first workflows, own reliability backlog and incident root-cause analysis, set engineering standards, partner with product/QA, report to the CTO, and recruit and develop engineers.