Top Senior C# Jobs in San Diego, CA

As a Senior Software Engineer at PerfectServe, you'll design, build, and maintain high-quality code for healthcare communication systems, mentoring junior engineers and collaborating across teams to improve patient care and clinical workflows.

The Senior .Net Developer will enhance SDG's C#/.NET Core codebase, design high-load services, and optimize MS SQL queries, benefiting from a remote work environment and attractive benefits.

Lead QA strategy and execution across game titles: author and manage test plans, coordinate with internal teams and external partners, improve automation and CI integration, maintain bug databases, evaluate and prototype AI-assisted QA tooling, and oversee certification and status reporting.

Design and operate large-scale, AI-native cloud infrastructure (especially Kubernetes/AKS). Improve service quality, automate incident prevention/remediation, accelerate engineering productivity, and integrate AI tools into development workflows.

Leads a Trading Platform engineering team responsible for real-time order flow, execution, market data, integrations, reliability, and delivery. The manager sets team direction, hires and develops engineers, oversees performance and growth, drives operational excellence and incident readiness, influences technical roadmaps, and partners with Product, Engineering, infrastructure, and operations. Technical credibility in backend, distributed, high-availability systems and hands-on experience with .NET/C#, AWS, Docker, and Kubernetes are required.

Design and implement scalable, highly available Azure Storage backend components. Maintain and automate storage repositories and DevOps pipelines, improve test automation, troubleshoot deployments and networking, act as on-call DRI for reliability, and collaborate on design and operational improvements.

Design and build Azure Kubernetes Service features and AI-native infrastructure, improve service reliability and developer velocity, automate incident prevention/remediation, integrate AI tools, and operate distributed, containerized systems at cloud scale.

Design, implement, and operate cloud-scale secure data access features for Azure Blob Storage. Lead end-to-end development, collaborate with stakeholders, improve availability, observability, performance, and apply AI-assisted engineering to enhance productivity and operations.

Design, build, and operate infrastructure for Azure Red Hat OpenShift's Hosted Control Plane. Manage and automate hundreds of AKS clusters, automate regional buildouts and CI/CD, monitor and release microservices, improve product integration with AKS, and collaborate with Microsoft and Red Hat to ensure scalable, secure, and resilient cloud-native infrastructure.

Design, implement, and deliver enterprise Java/JEE solutions and GUIs in an Agile environment. Collaborate with systems engineering, DevSecOps, test automation, and cloud teams across the SDLC. Develop microservices and SOA-based systems, use OOP and design patterns, integrate web services/JMS/XML technologies, and support build/test/release. Must work on-site and meet government security and SAP access requirements.

The Test Manager oversees test engineering operations, designs and executes test plans, leads testing efforts, and ensures adherence to quality standards, while mentoring the engineering team and collaborating with stakeholders.

Lead end-to-end design and delivery of AI-infused, enterprise full-stack applications on Azure. Architect resilient solutions, build Copilot/agentic features, enforce engineering best practices, mentor engineers, collaborate with PM/UX teams, ensure quality/reliability, and support production services and integrations.

Design and deliver scalable control-plane and management services for Azure Storage at hyperscale. Lead architecture, reliability, and performance work for storage platforms that support AI workloads, adopt AI-assisted engineering practices, and own system health, incident response, and long-term technical roadmaps.

Develop, test, deploy, maintain, and optimize software solutions using Microsoft technologies and Azure cloud services. Collaborate with business stakeholders, architects, security, infrastructure, product, and support teams throughout the software development lifecycle. Modernize legacy applications, build REST APIs, implement automated testing, ensure PCI and HIPAA compliance, document systems, manage releases, and support production troubleshooting, monitoring, performance, and reliability.

The Senior Software Engineer will develop reliable systems for IoT fleet management, create user interfaces, and support data engineering tasks.

Seeking a Senior DevOps Engineer for OpenSesame, focusing on CI/CD pipelines, cloud infrastructure, and automation. Responsibilities include improving developer experience and mentoring teams.

The Senior DevOps Engineer manages cloud infrastructure using IaC, enhances CI/CD pipelines, mentors teams, and drives automation initiatives for improved developer experience.

Lead architecture, development, integration, migration, deployment, and troubleshooting for Dynamics 365 Customer Service and Power Platform solutions. Support Genesys-to-Microsoft contact center modernization across multiple call centers, queues, agents, and business units. Build plugins, APIs, workflows, customizations, Power Apps, and automations; design Azure integrations; manage data migration and ALM practices; conduct architecture and code reviews; and mentor developers.

Lead and mentor DevOps engineers while designing, operating, and improving CI/CD pipelines, developer tooling, infrastructure-as-code, Kubernetes and Kafka environments, and observability solutions. Partner with architecture, security, data, development, and product teams to improve application resiliency, uptime, performance, and operational best practices across SaaS production systems.

The role involves full-stack software development, adhering to Agile practices, and collaborating across teams. Responsibilities include coding, testing, and maintaining software systems while mentoring team members.

Leads distributed desktop software development teams across multiple mature dental practice management products. Owns delivery predictability, engineering quality, technical debt, release health, compliance deadlines, defect triage, test strategy, and customer issue resolution. Partners with Product Management, QA, DevOps, and support while managing employees and delivery partners across international teams. Requires technical fluency in Windows desktop technologies, relational databases, continuous integration, packaging, installers, and upgrade paths.

Design, build, and maintain cloud-native backend applications using C#/.NET on AWS. Leverage Claude for AI-assisted coding, participate in design and code reviews, improve performance and reliability, and mentor engineers while collaborating across product and architecture teams.

Lead technical delivery of Enterprise Content Management (ECM) solutions, guiding design, development, integrations, CI/CD, automated testing, and cloud modernization. Provide hands-on .NET development, incident resolution, operational readiness, and coach engineering teams while ensuring security, retention, and governance for content services.

Lead implementation of software safety programs for underwater robotic/autonomous vehicles per MIL-STD-882. Produce safety plans and assessments, perform hazard analyses, track coverage metrics, catalog safety artifacts, review software independently, and present findings at reviews and customer meetings. Coordinate across programs and support demanding schedules with occasional travel.

Design, develop, and maintain scalable AI-forward APIs, MCPs, and services for Microsoft 365. Lead features from concept through launch, write reusable code, document designs, estimate work, and support production services through on-call responsibilities. Improve reliability, performance, and scalability while mentoring engineers and establishing technical best practices across teams.