Top Senior C# Jobs in San Diego, CA

Lead the design and implementation of end-to-end quality systems and testing frameworks. Own multiple testing layers (unit, integration, E2E, contract, performance, chaos), integrate automated tests into CI/CD, drive load/performance testing and monitoring, troubleshoot failures, apply AI tooling to improve workflows, and collaborate with engineers, PMs, and designers to improve coverage and reliability.

Lead full‑stack development of microservices-based case management and workflow automation for DoD systems. Build REST APIs, responsive front ends, CI/CD pipelines, and cloud IL2–IL5 deployments while ensuring DISA STIG/RMF compliance, data protection, performance optimization, automated testing, Agile delivery, documentation, mentoring, and Tier 3 support during critical incidents.

Lead and manage engineers to design, build, and maintain production backend game services (sessions, matchmaking, progression). Diagnose incidents, participate in on-call, collaborate with cross-discipline teams, and produce clear technical documentation.

Improve and maintain automated build systems for a game team. Develop build software (Unreal Engine 5, primarily C#), monitor CI/CD health, provision on‑prem and cloud build resources, troubleshoot build failures, enable internal workflows, and collaborate with release and test teams to publish builds and test results.

Develop and customize Teamcenter-NX integration, create NXOpen tools, implement customizations, and conduct testing while providing user training materials.

As a Deployed Customer Engineer, you serve as a technical partner, implementing Couchbase solutions and collaborating with customers to achieve technical milestones and business outcomes. Responsibilities include coding, database architecture design, and troubleshooting deployment challenges.

Lead the design, development, and deployment of digital identity solutions for state governments, ensuring effective technology implementation and customer success.

Lead technical strategy and architecture for public sector digital identity solutions, ensuring technical excellence and customer success with hands-on involvement and high-level interactions.

Lead full-stack developer responsible for designing, building, and maintaining Salesforce Commerce Cloud e-commerce solutions and integrations (ERP/CRM). Mentor junior developers, provide technical leadership, troubleshoot issues, and deliver scalable, secure code while collaborating with cross-functional teams.

You will develop and maintain components of the LLVM based toolchain, collaborating with the community while ensuring platform-specific optimizations and tests.

Designs scalable, secure technology solutions connecting business objectives with application, integration, data, cloud, and enterprise systems. Responsibilities include developing architectures and roadmaps, modernizing processes through automation, governing APIs and data flows, incorporating security and compliance, guiding engineering teams, evaluating vendors, and facilitating stakeholder discovery workshops.

Design and optimize high-performance C++/CUDA libraries for GPU-based data processing. Improve multi-node GPU communication (UcxExchange), optimize Presto GPU query performance, and lead enhancements across Presto, Velox, and cuDF projects for efficient DataFrame and database acceleration.

As a Sr. Software Engineer at Bloomerang, you will lead technical direction, mentor engineers, and enhance SaaS solutions while utilizing .NET and AI tools. You will ensure scalable, maintainable applications, advocate for Agile workflows, and focus on quality outcomes in software development.

Develop and optimize ultra-low-latency, high-performance trading infrastructure in modern C++. Implement and tune order execution, market data connectivity, multi-threaded systems, and risk modules. Profile and benchmark real-time systems, collaborate with quants and traders, and maintain robust, fault-tolerant continuous trading operations.

Design high-performance C++ libraries for automated PCB design challenges, mentoring peers and shaping technical direction while collaborating with experts in various fields.

Design, build, and maintain scalable full-stack web applications. Implement backend APIs and responsive frontends, deploy to cloud, ensure security/performance, write tests, debug issues, participate in reviews, and mentor junior developers.

The Antenna Engineer will design, develop, and integrate advanced antenna systems for LEO satellite communication, focusing on phased array technology and RF components.