Top Remote C# Jobs in San Diego, CA

Develop and maintain secure full-stack web applications, APIs, integrations, databases, and production infrastructure. Rapidly prototype with AI-assisted development tools, then audit, refactor, test, secure, deploy, and monitor the resulting software. Integrate healthcare, CRM, billing, communications, and enterprise systems while protecting PHI and supporting HIPAA safeguards. Collaborate with executives, analysts, vendors, and operational teams to translate business needs into maintainable technical solutions, troubleshoot incidents, and continuously improve reliability and delivery speed.

The Principal Engineer will shape the technical strategy for messaging infrastructure, influence architectural decisions across teams, and solve complex technical problems. Responsibilities include mentoring engineers, driving coherence across teams, and leading initiatives to ensure Weave's competitiveness in messaging solutions.

Designs, develops, and maintains complex full-stack applications; contributes to architecture, design patterns, code reviews, debugging, and performance improvements. Collaborates with product managers, QA engineers, and stakeholders in Agile delivery processes. Maintains coding standards, stays current with technology trends, and mentors junior developers while delivering scalable, high-quality software solutions.

Lead modernization of a 30-year-old Store Management System by reverse engineering EZC file-based platforms, migrating data and applications to PostgreSQL, and developing enterprise C/C++ software. Responsibilities include architecture, systems integration, APIs, ETL, performance optimization, troubleshooting, documentation, and maintaining business continuity. The role also applies AI-assisted development tools for code analysis, documentation, testing, and modernization while mentoring teams and supporting legacy and modern environments.

As a Gameplay Engineer, you'll design and refine networked gameplay systems, iterate on features, and collaborate with designers and back-end engineers.

Develop and integrate game features using Unity, C#, and various APIs while ensuring game performance and quality standards are met.

The C# / .NET Developer will design and maintain middleware applications, build Shopify integrations, and support a mobile app backend in a remote work environment.

Design, develop, and maintain scalable web applications using .NET backend and Angular/React frontend. Collaborate on requirements, implement RESTful APIs, optimize performance, debug, maintain documentation, support end-users, and work within CI/CD and DevOps workflows.

Design, develop, customize and integrate Microsoft Dynamics 365 CRM/CE solutions. Build entities, forms, workflows, plugins, reports and dashboards using CRM SDK, C#, JavaScript, ASP.NET and SQL. Troubleshoot issues, estimate implementation approaches, collaborate with stakeholders, document solutions, and mentor junior developers. Banking domain experience preferred.

The role involves back-end development using .NET Core and SQL, contributing to Jibble 2.0 API integrations, and collaborating with product and design teams.

Lead multi-year technical vision and architecture for Payments, Scheduling, Forms, RCM and mobile platforms. Drive cross-team solutions, evaluate build-vs-buy, mentor senior engineers, set company-wide engineering standards, and ensure scalability, reliability, and observability for high-throughput distributed systems.

Develop data integration, health information exchange, and IRIS application solutions for healthcare and other clients. Responsibilities include designing robust distributed applications, defining project specifications, selecting implementation strategies, collaborating directly with clients, and contributing to large-scale InterSystems IRIS and HealthShare implementations. Strong communication and software development skills are essential, with healthcare IT and healthcare data integration expertise highly valued.

Design, develop, implement, test, and support high-quality internal software and customer-facing products. Enhance existing products and design APIs that integrate systems. Ensure security measures and perform code testing and reviews.

Develop and implement mobile games using Unity for iOS and Android. Collaborate with teams on gameplay features and optimization, ensuring quality code and user experience.

Develop user interface components for ArcGIS Pro using C# and WPF, work in an agile team, and design software solutions for raster and imagery processing.

Lead full lifecycle development of high-volume enterprise web applications using C#/.NET and AngularJS. Contribute to architecture and design, develop and test scalable solutions, troubleshoot production issues, mentor developers, and collaborate with analysts and business stakeholders in an Agile/Scrum environment.

As a Senior Backend Engineer at Eight Sleep, you will develop and maintain back-end services and improve data processing, supporting critical business logic in distributed systems.

Lead end-to-end customer rollouts of an AI-native planning platform: build and maintain data integrations, create performant financial models, develop AI-driven automated test harnesses, resolve data and performance issues, ship product fixes, and partner with finance stakeholders to operationalize solutions and feed product improvements back into engineering.

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

Customize and configure ServiceNow applications and workflows, manage releases and environments, analyze system interactions, gather and document requirements, develop integrations and import data, troubleshoot issues, and maintain processes, standards, and tools to support Service Transformation and IT operations.

As a Unity Engineer, you'll implement features, ensure performance optimization, debug issues, and collaborate with the team to enhance gameplay for mobile titles.

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.

Execute scheduled, ad hoc, and release-milestone software tests; review test cases; report defects in issue-tracking systems; communicate status in standups; and collaborate with software test managers and development teams. The role requires knowledge of QA methodologies, black-box, grey-box, and white-box testing, strong communication and organization, independent and team-based work, and participation in planning and professional meetings.

Remote Senior Software Engineer who evaluates Microsoft and complementary technologies, designs and implements custom software (C#, JavaScript, SQL), applies cloud and DevOps practices (Azure/AWS, CI/CD, containers), mentors and networks professionally, and continuously learns and advises clients.

Lead development of automated API, UI, and end-to-end tests for a real-time trading platform. Extend AI-assisted test generation, build scalable CI/CD test frameworks for order lifecycles and market-data streams, reduce flakiness, triage failures, mentor engineers, and drive quality and testability across the product.