Top C# Jobs in San Diego, CA

Work as part of an agile engineering team to design, build, test, and support scalable .NET-based IoT and warehouse execution systems. Deliver high-quality code, write tests, troubleshoot production issues, collaborate with product and cross-functional teams, and follow secure coding and CI/CD practices.

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.

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.

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.

Lead the Payments Team by architecting and maintaining high-performance backend services, addressing complex engineering challenges, and mentoring engineering talent.

As a Software Engineer, you will design and build backend services for Relativity's generative AI platform, focusing on scalability and reliability in distributed systems.

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.

The Full-Stack Developer will design and implement solutions for collaboration platforms, focusing on backend architecture, React-based front-end development, and integrating AI features. Responsibilities include developing services, APIs, user interfaces, and ensuring integration with various systems while utilizing Azure tools.

The Staff Software Engineer will focus on quality-driven engineering, automated testing, CI/CD pipelines, AI integration, and mentoring junior engineers while collaborating remotely.

Develop, maintain, and troubleshoot Microsoft 365 and Power Platform solutions. Build .NET and Power Platform applications (Power Apps, Power Automate, Power BI, Dataverse), customize SharePoint, create PowerShell automation, integrate systems, support tenant and environment configuration, monitor Dataverse performance, assist with POCs, user support, and status reporting.

The Full Stack Developer will design, build, and support web applications for credit and structured products, integrating third-party systems and migrating legacy applications to modern architectures, while ensuring data quality and performing reporting tasks.

Own and improve AWS cloud environment, network connectivity, and internal IT operations. Implement IaC for client onboarding, harden network/security, monitor and remediate vulnerabilities, maintain HIPAA-compliant configurations, manage device enrollment/MDM and IAM, optimize cloud costs, automate infrastructure processes, and support engineering as the go-to cloud resource.