Top Senior C# Jobs in San Diego, CA

Work with customers and cross-functional teams to design, build, and deliver cloud-based solutions. Lead design, identify dependencies, mentor engineers, act as DRI and on-call, and improve availability, reliability, observability, and performance. Contribute to open-source assets and collaborate with Microsoft product teams to produce extensible, maintainable code and scalable solution patterns.

Senior full‑stack developer responsible for designing, developing, testing, integrating, and maintaining front‑end and back‑end tools for program operations. Collaborate with teams, provide user training, attend/facilitate meetings, and follow Agile/SCRUM practices. Must use and maintain CI/CD and dev tools, work on‑site at a naval base, and hold required security clearance and US citizenship.

Lead a team responsible for payments and finance development, focusing on API integrations, security compliance, and team productivity improvements.

Leading a software engineering team, overseeing design and implementation phases, ensuring adherence to development standards, and collaborating with cross-functional teams.

Seeking a Senior Full Stack .NET Developer to work on a social good project, with strong skills in C#, AngularJS, design, and UX. Requires 5+ years of experience.

As a Principal Software Engineer, you will architect AI-enabled systems, mentor teams, and guide technical decisions for scalable products.

The Associate Staff Engineer will lead automation testing efforts utilizing various tools and frameworks while mentoring teammates and implementing agile practices.

The Staff Engineer will leverage 5+ years of experience in C#, JavaScript, and frameworks to lead and innovate solutions in a collaborative environment.

As a Senior Full-Stack Engineer, you will design and deploy solutions for state governments, ensuring high standards of security and privacy while leading cross-functional teams.

Lead design, development, and maintenance of cloud hosting management and orchestration solutions. Mentor engineers, review code for quality and security, design REST APIs, troubleshoot issues, improve performance and reliability, and drive requirements and architecture decisions to enhance customer experience.

Lead backend development using C#/.NET and cloud-native technologies. Build and maintain APIs, ensure quality and performance, troubleshoot issues, conduct code reviews, and drive software/process improvements.

Lead and mentor a distributed team building a realtime, cross-platform renderer. Drive delivery, technical strategy, and engineering practices; collaborate with R&D, product, and integrations to turn neural-rendering research into production-quality, high-performance rendering across web, mobile, desktop, and headset platforms.

Design and build cloud-native, highly available systems and serverless applications on Azure. Implement Infrastructure-as-Code, develop TypeScript/React/NestJS applications, create APIs for web/mobile/IoT, write automated tests, deploy frequently, and participate in production support and on-call rotations while working in agile teams.

The Sr. Vision Software Engineer will design, test, and integrate machine vision solutions, develop computer vision algorithms, and troubleshoot production issues while collaborating with engineering teams.

Design and lead architecture for scalable, secure cloud-native applications on GCP; define agentic AI architectures, APIs, and integration strategies; mentor teams, enforce governance, and drive DevOps, observability, and performance best practices.

Design, develop, modernize, test, and maintain data-driven software and relational databases for FAA aeronautical information distribution. Gather requirements, implement COTS integrations, troubleshoot production issues, produce technical documentation, participate in reviews, and provide technical leadership and mentoring across the software development lifecycle.

Design, architect, and implement cloud-first full-stack software using Java/C# and JavaScript frameworks. Provide technical leadership, mentor engineers, improve architecture and performance, promote CI and automated testing, and support customer implementation and cloud platform operations.

Lead design, development, and deployment of scalable, fault-tolerant cloud-native microservices. Own architecture, mentor engineers, run on-call rotations, triage production incidents, optimize performance, and collaborate with product and stakeholders to deliver full‑stack and mobile solutions.

Design, implement, and maintain custom test frameworks for Illumina's primary analysis software. Create and expand automated tests, troubleshoot CI/CD pipelines, investigate failures, collaborate with developers to diagnose root causes, and ensure tests are reproducible, documented, and maintainable as analysis capabilities evolve.

Design and develop native Sage Intacct payment integrations and AR/AP workflows, implement APIs/SDKs, ensure PCI-compliant secure architectures, troubleshoot integration issues, collaborate with product/support teams, produce documentation, and monitor/optimize integration performance.

Build, architect, and own moderate-to-complex backend components; lead small teams or projects; provide technical guidance and code reviews; deliver end-to-end backend services focused on AI-enabled customer data insights, onboarding, messaging/calling features, and scalable data management for a growing user base.

Lead and grow a multidisciplinary engineering team across full-stack, data engineering, and BI. Own people management, technical direction (C#/.NET, SQL, Vue 3, Power BI), data pipeline reliability, roadmap delivery, cross-functional collaboration, and engineering best practices to improve velocity, quality, and health outcomes.

Lead design, develop, and maintain Opcenter/Camstar MES solutions. Translate stakeholder requirements into technical designs, implement C#/.NET and web UI components, integrate APIs, perform code reviews, troubleshoot, and mentor an offshore development team through the SDLC.

The Senior Software Engineer designs and develops complex features within OneStream solutions, ensuring technical excellence and mentoring other engineers. Responsibilities include architectural design, UI development, API creation, performance improvements, and collaboration across teams.

Develop, design, and maintain OneStream solution accelerators using Microsoft .NET. Lead design discussions, produce documentation and unit tests, collaborate with product and engineering, and enable partner adoption through toolkits and best-practice guidance.