Top Senior C# Jobs in San Diego, CA

Manage and grow the Video Enablement engineering team, own core video pipeline (ingest, transcode, storage, playback), enable third-party device integrations, collaborate on video roadmap, ensure scalable resilient AWS infrastructure, mentor engineers, contribute technically when needed, and support production incidents and cross-team enablement.

Lead software architecture, design, development, testing, and deployment of real-time C4ISR and simulation systems. Drive customer engagement to gather requirements, guide development, mentor team members, and support demonstrations and live flight exercises. Participate across the full software lifecycle and support integration of distributed, full-stack capabilities.

As a Lead Software Engineer, you'll design and develop GenAI platforms, integrate LLMs, mentor engineers, and solve technical challenges for scalable solutions.

Design, build, and operate cloud-native, enterprise-grade SaaS services on Azure. Lead architecture and design, develop APIs and UIs, apply AI-enabled engineering tools, ensure observability, support production incidents, and drive reliability, performance, and CI/CD improvements across teams.

The Senior Software Engineer will lead projects for the Forms platform, designing and building features across web, mobile, and backend systems while mentoring other engineers and improving platform scalability and reliability.

Design, build, and maintain scalable test automation frameworks and tooling (Playwright, C#, JS/TS). Integrate automated tests into CI/CD, develop end-to-end, integration, and performance tests, apply AI techniques for test generation and defect detection, troubleshoot system issues, mentor QA teams, and drive automation and quality engineering best practices.

Lead SRE efforts for DFIN SaaS: ensure availability, performance, scalability, and automation. Implement monitoring, CI/CD, IaC, container orchestration, AI-enhanced observability, incident response, RCA, and runbook automation while collaborating across engineering teams.

As a Senior Software Engineer, you'll develop and build tools for creative projects while leading feature development and collaborating with teammates.

Design, build, and operate scalable AWS-based backend services and APIs for the Collectors Vault. Own architecture and delivery, improve performance and reliability, mentor engineers, and leverage modern AI tools to accelerate development and engineering velocity.

Lead backend and full-stack work on the Payments team, building multi-gateway integrations (Stripe, PayPal), payment APIs, and customer payment UIs. Ensure secure, compliant (PCI-DSS) payment flows, reliability, observability, and scalability across AWS/Kubernetes microservices. Partner cross-functionally to design architecture, implement settlement/reconciliation, and maintain high availability.

Senior Software Engineer responsible for developing and maintaining web applications and microservices (React, Golang). Mentor team members, lead code reviews, influence technical decisions, improve CI/CD and testing strategies (unit, E2E, performance), collaborate across teams on integrations, and promote engineering best practices and documentation.

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.

Designs and implements enterprise Java (JEE) solutions and microservices in an Agile environment. Collaborates with systems, cloud, DevSecOps, and test teams across the SDLC to prototype, build, test, and release GUI and backend services. Requires Top Secret clearance and SAP/PAR access, on-site work in San Diego or El Segundo, and periodic travel.

Lead architecture and hands-on development of the end-to-end video pipeline (live ingest, transcoding, storage, playback, and developer SDKs). Mentor engineers, collaborate across mobile/web/ML/platform teams, own monitoring and on-call support, and help scale video streaming and VoD capabilities for millions of streams and clips.

Lead development of core client systems and engine-level infrastructure in Unity/C#. Diagnose and fix cross-cutting performance issues, upgrade third-party SDKs, evolve build tooling, produce design docs, scope multi-week infrastructure initiatives, mentor engineers, and drive profiling, optimization, and architecture changes to enable future features.

The DevOps Engineer will enhance the DevOps culture within agile teams by implementing CI/CD, coaching, and developing quality products across various roles.

The SharePoint Developer will focus on architecture and development using SharePoint technologies, oversee web development, and support both legacy and new applications while consulting with project managers and clients.

The Technical Lead will build software systems for AI-native drug discovery, design data pipelines, develop APIs, and collaborate with scientists to create efficient workflows and solutions.

Lead design and implementation of modernized insurance underwriting and policy administration solutions. Drive cloud transformation, data-driven and secure architectures, improve risk selection and claims resolution, enhance customer experience through automation, mentor technical teams, manage client relationships, and oversee project lifecycle, budgets, and delivery quality.

Design, develop, and field high-performance Ground Control Station and C2 software using C++/Qt/QML and QGroundControl. Lead architecture and technical direction, mentor engineers, define APIs/ICDs, debug integration/latency issues, support field tests, implement post-mission debrief tools, and ensure interoperability with C2 standards.

Lead design and build of scalable AWS cloud-based backend services and APIs powering web and mobile customer experiences. Own end-to-end feature delivery, improve grading and authentication workflows for scale and reliability, leverage AI tools to accelerate development, and provide technical leadership and mentorship across teams.

Lead operations analysis, modeling and simulation (ModSim) efforts to support trade studies, mission effectiveness, and requirements. Develop physics-based RF algorithms, analytical models, and scripts (MATLAB/Python/C++/Java). Analyze Monte Carlo and sensitivity studies, visualize results, document findings, and present to technical and leadership stakeholders while supporting SAP and Top Secret environments.

Develop and maintain proprietary UI editor and related tools for console games. Implement features, support fonts/localization and PC development, profile and tune performance, provide technical support, and collaborate with designers, artists, and programmers to improve UI tooling and pipelines.

Seeking a .NET Developer with over 5 years of web development experience. Responsibilities include analyzing system requirements, assisting with UAT, and participating in meetings. Must be familiar with various technologies and work collaboratively with teams.

Develop Salesforce integrations and customized CRM solutions, improve business processes, and document code while working in a collaborative team environment.