Backend Developer

Job Title: Backend Developer

Duration: 6 Months

Need Local candidate to Walnut Creek CA(100% on-site)

Role Overview:

• We are looking for a skilled Backend Developer with strong SQL expertise and experience working on application modernization initiatives. The role requires a solid understanding of existing business logic implemented in complex SQL queries and the ability to rebuild optimize and implement that logic within a backend architecture.

Key Responsibilities:

• Analyze and understand existing business logic embedded in SQL queries stored procedures and database objects.
• Design and develop backend components / .NET Core translating database-driven logic into scalable application-layer services.
• Participate in application modernization projects including migration from legacy systems to modern service-oriented or API-driven architectures.
• Optimize SQL queries for performance scalability and maintainability.
• Collaborate with business stakeholders architects and frontend teams to ensure accurate interpretation of business rules.
• Develop and maintain RESTful APIs and backend services to support application functionality.
• Ensure high-quality code through unit testing code reviews and adherence to best practices.
• Support production issues root cause analysis and performance tuning as needed.

Required Skills:

• 10 years of experience / C# (.NET Core preferred) for backend development.
• Excellent SQL knowledge including complex queries joins CTEs stored procedures and performance tuning.
• Hands-on experience in application or database modernization projects.
• Ability to reverse-engineer business logic from legacy SQL-based implementations.
• Experience working with relational databases such as SQL Server (preferred).
• Understanding of layered architecture service-oriented design and API development.
• Familiarity with source control systems (Git Azure DevOps etc.).

Key skills: .NET API C# SQL Azure Git