IT - .net/C# Developer - Senior

Apex Systems; California; Hybrid; USD 76,000 - 90,000; Full time

Job summary

Apex Systems in California (Hybrid) seeks a Senior IT .NET/C# Backend Developer to lead the design and delivery of scalable backend services, REST APIs, and cloud-native microservices on Google Cloud Platform. You will mentor teams and ensure robust, reusable components with SOLID design in a fast-paced environment.

You will apply Agile practices, leverage AI-assisted tooling, and collaborate across business and technical partners to accelerate time-to-market while maintaining high quality and

Qualifications

• Bachelor's degree in Computer Science or related discipline.
• 8–10 years of backend development experience in C# and .NET.
• Strong knowledge of OO, SOA, design patterns, and SOLID.
• Experience with GCP, SQL/NoSQL, and web APIs.

Responsibilities

• Deliver backend digital solutions and web applications using advanced tech.
• Provide technical guidance to engineering staff to meet objectives.
• Design and implement REST-based Web Service APIs in transactional environments.
• Develop cloud-native applications and microservices on Google Cloud Platform.
• Collaborate with partners and teams to build scalable web solutions.
• Utilize AI tools to accelerate development and testing cycles.
• Participate in Agile methodologies to ensure timely deliveries.
• Analyze and propose cost-effective, high-quality technical solutions.

Skills

C#

.NET

REST APIs

Angular

React

TypeScript

JavaScript

SQL

NoSQL

GCP

Education

Bachelor's degree in Computer Science

Tools

Google Cloud Platform

Microsoft Web API

Hibernate

Spring

UML

SOLID principles

Job description

## Job Description# IT - .net/C# Developer - SeniorApply**Job#: 3056830****Job Description:**IT - .Net/C# Developer - Senior**Location:** Other, California (Hybrid)**Alternate Location:** Austin, TexasRole OverviewAn experienced engineer is required to develop digital solutions and experiences that drive growth and accelerate digital transformation. This role focuses on improving the customer journey through rapid, insights-driven iterations and innovative technology. The successful candidate will assume responsibility for overall technical delivery for a defined customer journey, driving significant advancements in time-to-market. Collaboration within a cross-functional environment will be necessary to ensure project success and transform operational processes.Key Responsibilities* Deliver backend digital solutions and web applications utilizing advanced software development technologies.* Provide technical guidance, direction, and feedback to engineering staff to achieve project objectives.* Design and implement REST-based Web Service APIs in transaction processing environments.* Develop cloud-native applications and microservices utilizing Google Cloud Platform.* Collaborate with business partners and technical teams to build scalable, interactive web solutions.* Utilize AI technologies, such as GitHub Copilot and agentic frameworks, to accelerate software development and testing cycles.* Participate actively in Agile software development methodologies, values, and procedures to ensure timely deliveries.* Analyze, propose, and implement cost-effective, high-quality technical solutions for complex problems.Required Qualifications**Education:** Bachelor's degree in Computer Science or a related discipline.**Experience:** Minimum of 8 to 10 years of solid backend development experience in C# and .NET.**Technical Skills:** Proficient in C#, .NET, .NET Core, Spring, Hibernate, and Unified Modeling Language. Strong understanding of object-oriented design, Service-Oriented Architecture, design patterns, and SOLID principles. Experience with Google Cloud Platform, Microsoft Web API, SQL, and NoSQL databases. Proficient in frontend technologies including Angular, React, HTML, CSS, JavaScript, TypeScript, and jQuery.Preferred Qualifications* Experience working with distributed multi-tier applications, WMI, and SQL.* Proven ability to manage multiple priorities and deliver technical presentations to various levels of management.* Demonstrated ability to plan tasks independently and maintain accountability for schedules and deliverables. *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 [e-mail] 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:** Other, CA, US**Job Type:****Date Posted:** October 22, 2026**Pay Range:** $55 - $65 per hour