Senior Software Engineer (Full Stack .NET) - Hybrid

Genesis10 is currently seeking a Senior Software Engineer (Full Stack .NET) for a hybrid position with a Global Financial Institution located in San Leandro, CA, Concord, CA, or San Francisco, CA. This is an 18+ month contract opportunity.

This role is for a hands-on full stack engineer to design, build, and support scalable, enterprise-grade applications that power critical business capabilities. The ideal candidate will have deep expertise in .NET/C#, strong database and data modeling skills, and experience developing high-performance, distributed systems within regulated environments. You will collaborate with architecture, product, security, and DevOps teams to deliver secure, resilient, and cloud-ready solutions.

Responsibilities:

• Design, develop, test, and maintain enterprise-grade full stack applications using .NET / .NET Core (C#)
• Design, optimize, and manage complex data models using Oracle Database and SQL
• Build and optimize scalable backend services leveraging RESTful APIs and service-oriented design patterns
• Develop and maintain data access layers using Entity Framework (Entity Framework Core preferred) with a focus on performance and scalability
• Implement event-driven and streaming solutions using Apache Kafka
• Ensure application security, performance, resiliency, and availability in a highly regulated enterprise environment
• Troubleshoot and resolve complex production issues with strong root cause analysis
• Support compliance, audit, and risk management requirements aligned with enterprise and regulatory standards
• Leverage GitHub Copilot and modern developer tools to enhance productivity and code quality
• Collaborate effectively within an Agile Scrum team to deliver high-quality, reliable software solutions

Requirements:

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field
• 4+ years of strong hands-on experience in full stack development using .NET and C#
• 4+ years of advanced experience with Oracle Database and SQL, including performance tuning, indexing, and stored procedures
• Experience with React and modern front-end development practices (e.g., component-based architecture, state management, and REST API integration)
• Hands-on experience with Apache Kafka for messaging and event streaming
• Proficiency with Entity Framework / Entity Framework Core
• Strong understanding of object-oriented design, SOLID principles, and software design patterns
• Experience with Git and enterprise-scale source control workflows
• Experience working in Agile/Scrum teams within large, enterprise-scale environments
• Must be able to work on-site 3 days per week

Desired skills:

• Experience with cloud platforms (Azure preferred; AWS or GCP acceptable)
• Exposure to or experience with OpenShift Container Platform and/or Kubernetes
• Knowledge of CI/CD pipelines (e.g., Harness, Jenkins), DevOps practices, and automated testing
• Proficiency with GitHub for source control and collaboration, including GitHub Copilot usage

Pay range: $51.56 - $59.56 per hour

Only candidates available and ready to work directly as Genesis10 employees will be considered for this position.

If you have the described qualifications and are interested in this exciting opportunity, please apply!

Ranked a Top Staffing Firm in the U.S. by Staffing Industry Analysts for six consecutive years, Genesis10 puts thousands of consultants and employees to work across the United States every year in contract, contract-for-hire, and permanent placement roles. With more than 300 active clients, Genesis10 provides access to many of the Fortune 100 firms and a variety of mid-market organizations across the full spectrum of industry verticals.

For contract roles, Genesis10 offers the benefits listed below. If this is a perm-placement opportunity, our recruiter can talk you through the unique benefits offered for that particular client. Benefits of Working with Genesis10:

• Access to hundreds of clients, most who have been working with Genesis10 for 5-20+ years.
• The opportunity to have a career-home in Genesis10; many of our consultants have been working exclusively with Genesis10 for years.
• Access to an experienced, caring recruiting team (more than 7 years of experience, on average.)
• Behavioral Health Platform
• Medical, Dental, Vision
• Health Savings Account
• Voluntary Hospital Indemnity (Critical Illness & Accident)
• Voluntary Term Life Insurance
• 401K
• Sick Pay (for applicable states/municipalities)
• Commuter Benefits (Dallas, NYC, SF, and Illinois)

For multiple years running, Genesis10 has been recognized as a Top Staffing Firm in the U.S., as a Best Company for Work-Life Balance, as a Best Company for Career Growth, for Diversity, and for Leadership, amongst others. To learn more and to view all our available career opportunities, please visit us at our website.

Genesis10 is an Equal Opportunity Employer. Candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.