ENGINEERING SCALABLE SOLUTIONS.

// VarunPatel.cs
public class VarunPatel : SeniorDotNetDeveloper
{
    public string[] Backend  => ["C#", "ASP.NET Core", "MVC", "Web API"];
    public string[] DataLayer => ["EF Core", "LINQ", "SQL Server"];
    public string[] Frontend => ["React.js", "jQuery", "Bootstrap"];
    public string[] Extras   => ["Payments", "JWT", "Git"];

    public async Task<Product> BuildAsync(Requirement req)
    {
        var api = await DesignSecureApi(req);
        var db  = await OptimiseSqlServer(api);
        return await Deliver(api, db, Quality.Production);
    }
}

// PaymentsController.cs
[ApiController, Route("api/payments")]
public class PaymentsController : ControllerBase
{
    [HttpPost("webhook")]
    public async Task<IActionResult> Webhook()
    {
        var payload = await new StreamReader(Request.Body).ReadToEndAsync();
        if (!_gateway.VerifySignature(payload, Request.Headers)) return Unauthorized();

        var evt = _gateway.ParseEvent(payload);
        if (evt.Status == PaymentStatus.Succeeded)
            await _payments.MarkPaidAsync(evt);

        return Ok(); // ✔ verified payment webhook
    }
}

-- usp_GetCandidatePipeline.sql
CREATE PROCEDURE usp_GetCandidatePipeline
    @RecruiterId INT,
    @Status      NVARCHAR(50) = NULL
AS
BEGIN
    SET NOCOUNT ON;
    SELECT c.CandidateId, c.FullName, s.Status, i.InterviewDate
    FROM Candidates c
    INNER JOIN Submissions s ON s.CandidateId = c.CandidateId
    LEFT JOIN  Interviews  i ON i.SubmissionId = s.SubmissionId
    WHERE s.RecruiterId = @RecruiterId
      AND (@Status IS NULL OR s.Status = @Status);
END -- ✔ indexed & optimised