Hire ADO.NET Developers: Affordable, Dedicated Experts in 72 hours

ADO.NET provides the core API for .NET applications to interact with relational and non-relational data sources. A proficient ADO.NET developer typically:

• Manages Connections: Uses SqlConnection, connection pooling, and proper disposal patterns.
• Executes Commands: Employs SqlCommand, parameterized queries, and stored procedures to prevent SQL injection.
• Handles Data Readers: Leverages SqlDataReader for forward-only, read-only data access.
• Uses DataAdapters & DataSets: Fills DataTables for disconnected scenarios and batch updates.
• Integrates ORMs: Works with Entity Framework or Dapper as needed to streamline mapping.

• Fine-Grained Control: Direct ADO.NET access allows precise tuning of queries and transactions.
• Performance: Optimized data readers and batch updates reduce latency in high-volume applications.
• Versatility: Connects to SQL Server, Oracle, MySQL, and OLE DB sources.
• Reliability: Robust error handling, retry logic, and transaction management ensure data integrity.
• Legacy Integration: Supports modernization of existing .NET applications and integration with legacy ADO code.

• IDE & Languages: Visual Studio, C#, VB.NET, .NET Framework or .NET Core/5+.
• Database Servers: Microsoft SQL Server, Azure SQL Database, MySQL, Oracle via ODP.NET.
• ORMs & Micro-ORMs: Entity Framework Core, Dapper for simplified mapping.
• Connection Pooling: Configuration via connection string and provider settings.
• Testing: NUnit, xUnit, and Testcontainers for integration tests against real databases.
• CI/CD: Azure DevOps, GitHub Actions for automated builds and database migrations.
• Monitoring: SQL Server Profiler, Application Insights, and performance counters.
• Data Access Patterns: Repository, Unit of Work, and Dependency Injection with Microsoft.Extensions.

• SQL Proficiency: Writing efficient joins, indexing strategies, and query tuning.
• Connection Management: Implementing using blocks, disposing connections, and handling timeouts.
• Transaction Control: Committing, rolling back, and managing isolation levels.
• DataReader vs DataAdapter: Knowing when to use streaming vs disconnected models.
• ORM Integration: Configuring and troubleshooting Entity Framework migrations and Dapper mappings.
• Error Handling: Catching SqlException and implementing retry policies with Polly.
• Security: Preventing injection, encrypting connection strings, and using secure credentials.
• Collaboration: Working in agile teams, code reviews, and clear documentation.

Job Title: ADO.NET Developer, .NET Data Engineer, SQL Data Access Specialist

Role Summary: Develop and optimize data access layers using ADO.NET, integrate with SQL Server and ORMs, and ensure high-performance data operations.

Required Skills: ADO.NET API, C#/.NET, SQL Server, Entity Framework or Dapper, Visual Studio, and unit testing.

Soft Skills: Clear communication, problem-solving, and teamwork in cross-functional environments.

• Data Layer Implementation: Build repositories and services that use ADO.NET for CRUD operations.
• Performance Tuning: Analyze and optimize slow queries and database interactions.
• Transaction Management: Implement complex transactions with savepoints and rollback logic.
• Testing & QA: Write unit and integration tests; use test databases and migrations.
• Migration & Versioning: Manage database schema changes via EF migrations or Flyway.

• ADO.NET Expertise: 3+ years using SqlConnection, SqlCommand, SqlDataReader, and SqlDataAdapter.
• Database Knowledge: Proficient with T-SQL, stored procedures, views, and functions.
• Frameworks: Entity Framework Core or Dapper experience is a plus.
• Testing Frameworks: NUnit or xUnit and familiarity with mocking frameworks.
• CI/CD: Experience configuring automated builds and database deployments.
• Soft Skills: Strong documentation practices and agile collaboration.

• Azure SQL: Experience with Azure SQL Database and managed instances.
• Microservices: Building data access in .NET Core microservices.
• No-Risk Trial: Willing to prototype a data access layer for assessment.

Specify remote, hybrid, or on-site work options; competitive salary or hourly rates; benefits such as training budgets and database lab access.

Outline steps: resume screening, ADO.NET coding exercise (e.g., implement CRUD and transactions), technical deep dive on SQL optimization, and culture-fit interview.

• API Nuances: Ensuring deep knowledge of provider-specific behaviors and connection settings.
• SQL Tuning: Validating expertise in execution plans and indexing.
• Error Recovery: Assessing ability to implement robust retry and fallback policies.

• How do you configure and tune connection pooling with ADO.NET?
• Describe implementing a transaction scope across multiple database updates.
• Explain the differences between DataReader and DataAdapter and when to use each.
• What strategies do you use to prevent and handle SQL deadlocks?
• How do you profile and optimize heavy ADO.NET data operations in production?

• Provide Sample Codebases: Share existing projects with ADO.NET layers and test suites.
• Pilot Task: Assign implementation of a new repository method with proper error handling and tests.
• Document Standards: Share coding conventions, connection string encryption practices, and SQL style guides.
• Mentorship: Pair new hires with senior architects for initial code reviews.
• Regular Check-Ins: Weekly demos of data access enhancements and performance gains.

• Vetted Experts: Access top ADO.NET developers with proven data access experience.
• Flexible Engagement: Hire freelance, contract, or full-time talent with a no-risk trial.
• Rapid Onboarding: Quickly integrate experts into your .NET and database environments.
• Dedicated Support: Leverage project managers for smooth coordination and delivery.
• Global Talent Pool: Tap into diverse data specialists across time zones.

Securing the best ADO.NET developers requires a structured approach—defining clear data access requirements, evaluating deep API and database expertise, and providing thorough onboarding. By focusing on optimized connections, secure queries, and robust transaction management, you can build reliable, high-performance .NET applications. Partner with Flexiple to access elite talent, flexible engagement models, and a streamlined hiring process—ensuring your data-driven projects succeed from day one.