C# jobs in San Francisco, CA

Remote or Sandy, Utah

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Today

RESPONSIBILITIES: Kforce has a client that is seeking a Software Engineer in Sandy, UT. We are seeking a skilled C#/.NET Engineer to join our team. The ideal candidate will have strong experience in building scalable applications using modern frameworks and cloud technologies. Key Responsibilities: * Design, develop, and maintain applications using C# and .NET frameworks * Implement and manage microservices architecture for distributed systems * Collaborate with cross-functional teams to delive

Contract

$20 - $30 hourly

Backend Engineer

Fremont, California

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5d ago

Job Description: Primary Skills: C#(Expert), .NET (Expert), Angular (Proficient), React (Proficient), TypeScript (Proficient). Contract Type: W2 and C2C Location: Fremont, CA (100% Onsite - 5 days in office) Duration: 6+ months (Possible extension) Job Summary: Join our innovative team as a Backend Software Engineer, where you'll play a crucial role in shaping the future of service workflow management across Vehicle, Insurance Claims, and Energy products. In this dynamic position, you'll be task

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Full-time, Third Party

Depends on Experience

Senior Single Sign On Engineer (SSO) - C# / SAML, Ping Identity / Okta

Remote

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2d ago

100% Remote - Candidates only - NO THIRD PARTY Our client is looking to augment their team with a C# SSO Software Engineer to assist in the implementation of Customer Single Sign-On (SSO) solutions. Requirements: 5+ years of overall C#.NET development experience,Experience developing Identity Access Management (IAM) solutionswith Ping Identity (or Okta) / SAMLExperience with Single Sign-On (SSO), access controls, identity proofing, OAuth, OpenID Connect (OIDC), WS-Fed, MFA, Public Key Infrastruc

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Contract

Depends on Experience

.Net Developer with Networking

San Francisco, California

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4d ago

Job Description : We are seeking a skilled .NET Developer with a strong background in networking concepts and protocols to join our team. The ideal candidate will design, develop, and maintain .NET applications while ensuring seamless integration with networked systems and secure communication across platforms. Reasonability:- Develop, test, and deploy applications using .NET Framework / .NET Core.Implement and maintain RESTful APIs, web services, and backend components.Work on network-related

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Contract

$40,000 - $60,000

Sr. Software Engineer (C#, .NET)

Remote

•

Today

Job Title: Sr. Software Engineer (C#, .NET) Location: Remote (Candidate should work CST Hours) Duration: 6 Months We are seeking a dedicated Sr. Software Engineer to join our team. The ideal candidate would be able to support our C# .NET 8 back-end maintenance and enhancement of our backend API that is pivotal in delivering robust services to a diverse range of clients. This crucial role involves ensuring the seamless operation and scalability of APIs that support warehousing operations and mu

Full-time

C# Developer with automation testing

Remote

•

Yesterday

Title: C# Developer with Automation Testing Location: Remote Duration: Contract till Sept 2026 Summary: This role involves client applications and involves application testing and providing recommendations for optimization. Required Skills - C#, Java, Java Typescript Selenium Specflow Playwright Job Duties - Responsible for documenting, testing, and supporting efficient and effective computer applications and tools consistent with established specifications and business requirements. Responsibl

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Contract

C# Software Engineer

Remote or Hybrid in Mendon, Utah

•

Today

C# Software Engineer (I-IV) Location : Remote or Hybrid (UT or TX) Target Start Date : 12/8/2025 Long-Term Contract (3-4 years) Pay Rate : $40.85-$75.00/hr Summary Our client, a global leader in advanced autonomous and robotic solutions across multiple industries, is seeking C# Software Engineers to participate in the full software development lifecycle for autonomous software, including requirements analysis, design, coding, testing, integration with hardware components, and deployment. Con

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Full-time

USD 40.85 - 75.00 per hour

Senior SDET (C#)

Remote or Hybrid in Cleveland, Ohio

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Today

Our Fortune 100 client is hiring for a Senior Systems Test Engineer who is highly proficient with test automation frameworks' creation and enhancement.You ll code in C# and TypeScript, build and enhance REST API and web test frameworks, and leverage tools like Postman, SQL Server, and Git to deliver high-quality releases. This remote, ET-hours role is perfect for a developer-minded tester passionate about automation and modern full-stack technologies such as Angular, React, and cloud integration

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Contract

DOE

Azure Integration Architect/Developer (Python, C#)

Remote

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11d ago

Azure Integration Archiect / Developer (Python, C#, .NET) Remote Overview We are looking for an experienced Integration Architect/Developer to join our Integration Hub team. The ideal candidate will have strong experience in building, scaling, and maintaining enterprise integrations using Azure services, along with solid skills in SQL/NoSQL databases and modern AI tools. This role spans hands-on development, debugging production issues, and collaborating with architects and business teams to bui

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Contract, Third Party

Depends on Experience

Senior Software Engineer (C# / Azure / .NET Core / microservices, AKS)

Remote

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2d ago

Remote Senior C# / .NET Software Engineer (.NET Core, Azure, microservices, AKS) Our client is looking to augment their team with an experienced Senior Software Engineer to assist in the implementation of cloud-based systems used by large corporations. This is a "best of all worlds" type of opportunity, working alongside highly-skilled resources, within a specialized technology division of a larger company, providing solutions to Fortune 500 companies. We are looking for flexible resources on th

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Full-time

$125,000 - $165,000

Senior C# Developer

Remote or Hybrid

•

Today

Our Fortune 100 direct client is hiring for an experienced Senior C# Developer to work on large-scale IT projects. You would be designing and coding in a variety of technologies supporting backend, API, and database. The ideal candidate will have strong C# development experience, has worked with front-end technologies such as angular or Vue, and back-end experience with SQL Server. This role can be done fully remotely following an EST work schedule. Does this sound like something you'd like to

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Contract

DOE

Back-End Developer Legacy Modernization (Java OR C#)

Remote

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18d ago

Are you passionate about transforming legacy systems into modern, scalable applications? . We specialize in migrating applications from mainframe and legacy environments to modern platforms like Java Spring and C# .NET using automated tools. In this role, you ll contribute to core modernization efforts, enhance reusable libraries, and mentor junior developers. You ll work closely with a collaborative team to deliver high-quality solutions on schedule. What You ll Be DoingWriting clean, efficient

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Contract

Depends on Experience

Senior Product Engineer (.NET C#/React)

Remote

•

Today

At Allstate, great things happen when our people work together to protect families and their belongings from life's uncertainties. And for more than 90 years our innovative drive has kept us a step ahead of our customers' evolving needs. From advocating for seat belts, air bags and graduated driving laws, to being an industry leader in pricing sophistication, telematics, and, more recently, device and identity protection. Job Description A Senior Product Engineer implement applications following

Full-time

USD 78,600.00 - 142,275.00 per year

Job Opportunity - Opcenter Lead Onsite @ Fremont, CA (onsite mandatory)

Fremont, California

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Today

Job Description: Role: Opcenter Lead Onsite Location Fremont, CA (onsite mandatory) Duration: Long Term Contract Mandatory Skills - MES/Opcenter implementation, C#, .NET, SQL, Mendix Job Description Domain Expertise: Subject Matter Expert for administering, configuring, and maintaining Opcenter Core and Electronics. Design & Development: Design and develop custom transactions in Opcenter to meet specific business requirements. Version Upgrades: Manage system upgrades, applying Siemens bes

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Contract, Third Party

Software Engineer, Reliability

San Mateo, California

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Today

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences- all created by our global community of developers and creators. At Roblox, we're building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device.We're on a mission to connect a billion people with op

Full-time

USD 153,120.00 - 192,890.00 per year

Backend (.NET) Developer

Fremont, California

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3d ago

Need Local only What You ll Do Design, develop, and maintain robust backend services using .NET Core and C#, focusing on high-performance, scalable applications that support Client's innovative productsBuild and optimize RESTful APIs to enable seamless integration between services, frontend applications, and external systemsImplement message queuing and streaming solutions with RabbitMQ and Kafka to handle real-time data processing and event-driven architecturesWrite efficient SQL queries in My

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Contract, Third Party

$60 - $70

Senior Software Engineer - Content Platform

San Mateo, California

•

Today

Full-time

USD 238,520.00 - 289,460.00 per year

Senior Software Engineer - Creator Collaboration

San Mateo, California

•

Today

Full-time

USD 238,520.00 - 289,460.00 per year

Backend Developer

Fremont, California

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4d ago

Job Title: Backend Developer Location: Fremont, CA 94538 Duration: 6 month CTH (with extension or conversion) Interview Process: Thursday (12/4) in person for 90 minutes (Fremont, CA) please apply if you can attend the interview on Thursday in Fremont CA. Project Description: Client is looking for an experienced Software Engineer to play a pivotal role in the design and development of our web applications for our internal users, expect a dynamic, high-impact environment where innovation drive

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Contract

Up to $60

Senior Software Engineer - Creator Communication (C++)

San Mateo, California

•

Today

Full-time

USD 238,520.00 - 289,460.00 per year

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C# jobs in San Francisco, CA, USA