Diego Velazquez

Brazil

Skills

About

Senior Software Developer with 20+ years of experience delivering enterprise-grade software solutions across web and desktop platforms. Extensive background in the design, development, and maintenance of business-critical systems for the private sector. Expert in Microsoft technologies, including C#, .NET, SQL Server, and Azure DevOps. Proficient in building modern, responsive applications using Angular and complex back-end services via RESTful. Experienced in database design, performance tuning, and implementing CI/CD pipelines and high-availability environments. Skilled in full lifecycle development, from requirements gathering to post-deployment support, focused on code quality, scalability, and maintainability. Recognized for strong analytical thinking, mentoring junior developers, and driving technical excellence in cross-functional agile teams.
At Nextdata, I spearheaded the development of a custom sales force automation system that transformed the way clients processed orders. By replacing a fragmented and semi-manual workflow with an integrated mobile and web solution built using C#, REST APIs, SQL Server, and Xamarin, we reduced order-to-invoice time from 48 hours to same-day processing — enabling clients to deliver products faster and boost operational efficiency.
In addition, I implemented online onboarding routines for new sales representatives and customers. Previously, the registration process was manual and required back-office intervention. With the new automated solution, built with Angular, .NET APIs, and integrated database workflows, the onboarding time was reduced by over 80%, allowing immediate activation of both clients and field agents.
To enhance commercial governance, I also developed financial portfolio management routines for the sales team, allowing precise control over customer discount policies. This system eliminated all manual intervention by automating approval flows and enforcing consistent pricing strategies through solid policy enforcement, directly supporting the sales process and resulting in a 25% reduction in sales team operational costs.
We also implemented a hybrid order issuance system to streamline the collaboration between sales reps and clients. Sales reps used a mobile app (built in C#/Xamarin) to generate a draft order, which was then sent to the client. The client could review, edit, and approve the draft through a web portal developed with Angular and ASP.NET Core. Once approved, the order entered the invoicing pipeline. This solution reduced travel requirements and operational costs by 20% by eliminating the need for in-person visits to remote customers.
From a DevOps perspective, I led the migration of our legacy CI/CD infrastructure from Jenkins, SVN, and Redmine to Azure DevOps. By implementing modern pipelines and leveraging deployment slots, we reduced both deployment time and downtime to just seconds. This modernization enhanced release stability, increased delivery frequency, and improved developer efficiency.
KEY ACHIEVEMENTS
• Reduced average sales order processing time from 2 days to under 6 hours.
• Developed and deployed a cross-platform solution using C#, REST, and SQL Server, accessible via mobile and desktop.
• Enabled real-time synchronization between field sales and billing systems.
• Decreased customer and seller onboarding time by 80% with online registration flows.
• Automated financial portfolio management, eliminating manual discount approval work and ensuring policy compliance.
• Reduced sales team operational costs by 25% through automation and policy enforcement.
• Implemented hybrid order issuance, reducing travel-related sales costs by 20% and improving customer engagement via digital collaboration.
• Modernized CI/CD pipeline from Jenkins/SVN to Azure DevOps, cutting deployment time and system downtime to seconds.
• Contributed to over 30% increase in client satisfaction and reduced inventory lead time.