Senior .NET Developer Jobs (No ghost jobs, direct from employers)

Job#: 3059109

Job Description:

Senior .NET Developer

Location: Sunnyvale, California (Remote)

Role Overview

An experienced Senior .NET Developer is required to design, develop, and scale high-performance IoT and cloud-based applications. The successful candidate will leverage modern .NET technologies to build resilient software architectures that support enterprise-level systems. This remote position demands strong expertise in cloud integration, robust software patterns, and secure development practices.

Key Responsibilities

• Design and develop highly scalable microservices and APIs using modern .NET and ASP.NET Core frameworks.
• Architect and maintain robust cloud-based integrations focusing on Azure IoT Hub and secure device provisioning.
• Implement event-driven patterns and publish-subscribe architectures using messaging systems like Apache Kafka.
• Create and optimize persistent storage solutions utilizing SQL Server, Azure Blob Storage, and Cosmos DB.
• Establish comprehensive testing strategies, incorporating unit and integration tests using xUnit, Moq, and Testcontainers.
• Deploy and manage containerized services using Docker, Kubernetes, and Helm within automated GitHub Actions pipelines.
• Monitor system health and application performance using Prometheus, Grafana, and Azure Monitor.

Required Qualifications

Education: A bachelor's degree in computer science, engineering, or a related technical discipline is preferred.

Experience: Extensive experience in professional software engineering, with a demonstrated focus on enterprise back-end development and cloud-native applications.

Technical Skills: Proficiency in C# and .NET Core is required, alongside hands-on experience with Microsoft Azure services, including IoT Hub, AKS, Key Vault, and Event Hubs. Solid knowledge of relational and non-relational database design, container orchestration, and RESTful API architecture is necessary.

Preferred Qualifications

• Hands-on experience developing custom ASP.NET Core middleware, utilizing built-in rate limiting, health checks, and caching.
• Good understanding of Azure IoT Edge architecture and gateway modules.
• Active Azure certifications, such as Azure Developer Associate or Azure Solutions Architect Expert.
• Familiarity with Zero Trust security principles and secure software supply chain practices.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy

Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.

Employee Type:

Contract

Location:

Sunnyvale, CA, US

Job Type:

Date Posted:

November 11, 2026

Pay Range:

$70 - $75 per hour

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