Dylan Messer

Senior developer specializing in C#/.NET solutions for the Microsoft Dynamics 365 ecosystem, delivering secure, modular plugins and Azure microservices in Agile consulting environments. Experienced designing reusable components using Dataverse, FetchXML, and Web API to support mission-critical case management, intake workflows, and data integrations for regulated organizations. Known for production ownership across Azure DevOps CI/CD, Terraform IaC, observability, and automated testing with mocks/fakes, plus mentoring engineers and partnering with PM/BA/QA and client stakeholders.

Senior Technical Lead - Teladoc Health

(2023-05 - 2025-10)

• Led a VA-style care coordination and case management implementation by extending Dynamics 365 with custom C#/.NET plugins and Azure Functions microservices, improving intake-to-resolution cycle time by 28%.
• Implemented server-side business logic using Dataverse and FetchXML to enforce eligibility/routing rules and reduce duplicate records by 35% through deterministic matching.
• Built secure integration APIs with ASP.NET Core Web API and Azure App Service to synchronize external systems, achieving 99.9% successful message processing with idempotent retries.
• Developed a user-centric operations dashboard using React to surface queues, SLA timers, and audit history from Dynamics 365 Web API, cutting agent handle time by 18%.
• Automated deployments with Azure DevOps pipelines and Terraform to provision Azure resources across dev/test/prod, reducing environment setup time from days to under 2 hours.
• Strengthened reliability by instrumenting Azure Application Insights and structured logging in C# services, reducing mean time to detect incidents by 40% and improving p95 API latency by 22%.
• Increased code quality by expanding automated tests with xUnit and Moq (mocks/fakes) for plugins and APIs, raising coverage from 45% to 78% and reducing escaped defects by 30%.
• Mentored 5 junior developers through C# code reviews and plugin design patterns, improving sprint predictability by 15% and accelerating onboarding to 3 weeks.

Senior Software | Security Engineer - Booz Allen

(2018-06 - 2023-04)

• Delivered federal consulting solutions by customizing Dynamics 365 entities and implementing C#/.NET plugins for secure case workflows, improving data quality and auditability for regulated programs.
• Designed integration services using Azure Functions and Azure Service Bus to process inbound data streams, reducing manual reconciliation by 50% and improving throughput to 10K+ events/hour.
• Authored reusable APIs with ASP.NET Core and OAuth 2.0 to protect sensitive data flows, supporting Public Trust-aligned access controls and least-privilege patterns.
• Implemented automated testing with xUnit and Moq for microservices and plugin logic, decreasing regression time by 35% and improving release confidence.
• Established CI/CD with Azure DevOps and infrastructure automation using Terraform, reducing deployment failures by 25% through consistent configuration and gated releases.
• Produced architecture and SDLC documentation for Dynamics 365 extensions and Azure services, improving stakeholder alignment and reducing rework by 20%.

Software Engineer - Comcast

(2013-05 - 2018-05)

• Built and maintained high-availability customer operations services using C#/.NET and REST APIs, improving request success rates to 99.95% during peak traffic windows.
• Implemented asynchronous processing with Azure Service Bus patterns and resilient retry logic in C#, reducing downstream timeouts by 30%.
• Optimized data access using SQL Server and query tuning, cutting report generation time by 45% for operational dashboards.
• Improved observability by adding structured logs and metrics via Application Insights, reducing incident triage time by 25%.

Bachelor's degree - Information Sciences and Technology - Penn State University (2016 - 2019)

Associate's degree - Concentration in Computer Studies - University of Maryland (2012 - 2013)