Senior Full Stack Engineer & Team Lead

Denny Maldonado

Houston, TX +1-214-***-**** ***************@*****.*** linkedin.com/in/denny-m-762802331/ Summary

Senior Full Stack Engineer & Solution Architect with 10+ years of experience building secure, scalable .NET applications across healthcare and finance. Mastered C#, ASP.NET Core, Blazor, Azure, AWS, SQL Server, and microservices architecture. Strong in API design, DevOps, and delivering enterprise solutions in Agile environments Experience

Ascension Health

Senior Full Stack Engineer & Team Lead Apr 2021 – Jul 2025

Migrated legacy EMR modules into Azure Kubernetes Service (AKS)–based microservices with ASP.NET Core 6, EF Core, and Docker, enabling reliable scaling during a 3x increase in telehealth visits.

Redesigned the patient portal from ASP.NET Web Forms/Kendo UI to Angular 14 with RxJS and Figma-driven UI, improving accessibility, simplifying navigation, and reducing bounce rates by 35%.

Built REST and FHIR APIs in ASP.NET Core to integrate with Epic and Cerner, giving clinicians secure, real-time access to patient data across facilities.

Implemented event-driven workflows with Azure Service Bus and Azure Functions to handle scheduling, billing, and notification processes, reducing integration errors by 30%.

Optimized 150+ SQL Server stored procedures and Entity Framework Core 6 queries, improving billing and patient record lookups by 60% and sustaining sub-200 ms response times under heavy load.

Delivered an AI-driven triage assistant using Python and Azure Cognitive Services, automating 35% of initial patient assessments and reducing manual nurse intake during virtual visits.

Designed ETL pipelines with SSIS, Azure Synapse, and Data Factory to unify patient, claims, and telehealth data, supporting advanced analytics for care management.

Strengthened security with OAuth2, Azure AD B2C (Entra ID), and Key Vault, simplifying authentication and protecting sensitive data across portals.

Enhanced observability with Azure Application Insights, DataDog, and Log Analytics, reducing incident response times by 70%.

Implemented automated testing (xUnit, NUnit, Moq) across services, raising coverage to 85% and reducing production defects by 40%.

Updated Azure DevOps pipelines using Terraform to configure Azure API Management mapped to Azure Function App endpoints, automating API onboarding and streamlining integration work.

Mentored 3 junior engineers through code reviews and test automation guidance, improving delivery quality and speeding up team onboarding.

Envestnet Inc

Senior Software Engineer & Solution Architect Mar 2018 – Mar 2021

Orchestrated migration of legacy .NET financial services applications to AWS ECS Fargate using SQS and API Gateway; achieved 40% reduction in infrastructure costs and improved application scalability by 150% (Microservices)

Modernized the client onboarding platform with React 16, Next.js, ASP.NET Web API, Kafka and AWS API Gateway, enhancing usability and reducing form abandonment by 25%

Architected secure RESTful and GraphQL financial APIs using ASP.NET Core, AWS Lambda, and Amazon Cognito for credit scoring and payments, enabling flexible data access and third-party bureau integration

Optimized transactional data pipelines using SQL Server on Amazon RDS and SSIS, reducing reporting latency by 70% and supporting high-volume batch processing

Enhanced data protection by designing multi-factor authentication using OAuth2, Amazon Cognito, and JWT, earning the 'Top Security Advocate' award within the engineering department.

Architected resilient ETL pipelines using AWS Glue and SSIS, processing 5TB of financial data daily into Amazon Redshift for risk management and fraud analytics, reducing errors by 35%.

Designed and delivered data visualizations using AWS QuickSight and SSRS for internal risk, compliance, and operations reporting

Integrated CI/CD pipelines using AWS CodePipeline and CodeBuild, with unit testing via MSTest/Moq and infrastructure automation using CloudFormation templates

Integrated Microsoft Dynamics 365 CRM with internal platforms to enable real-time client data sync and enhance sales pipeline visibility

Actively contributed to Agile planning and architectural decisions, defining SDLC practices, evaluating trade-offs, and documenting technical designs to align with business and regulatory goals Modernizing Medicine, Inc

Full Stack Engineer Jan 2016 – Feb 2018

Constructed robust backend systems with C#, Java, and ASP.NET Web Forms, empowering seamless patient intake processes and resulting in zero data loss incidents for over 3,000 patients.

Built internal desktop applications with WPF, improving scheduling accuracy and administrative staff productivity through responsive and streamlined UI components

Configured ADO.NET data connections, optimizing SQL Server performance for EMR and claims data access; resolved 99% of data access issues within defined SLAs, boosting user satisfaction

Enhanced UI features using Blazor, Kendo UI, and jQuery, creating responsive and user-friendly experiences for both staff and patient-facing portals

Implemented messaging workflows with RabbitMQ to decouple services and enable asynchronous processing of appointment reminders and billing event notifications

Leveraged Redis for caching frequently accessed clinical and billing data, reducing SQL Server load and improving response times for high-traffic workflows

Contributed to DevOps activities using TFS, supporting deployments to Azure App Services, maintaining release scripts, and resolving integration issues to ensure environment stability Accenture

Software Engineer Sep 2014 – Dec 2015

Developed web modules in C# and ASP.NET MVC to support dealer campaign management, lead capture, and vehicle promotion pages for a global automotive marketing portal

Wrote SQL queries and assisted with stored procedures to generate regional sales reports and campaign performance metrics for client stakeholders

Implemented front-end components using JavaScript, HTML, CSS, and jQuery, contributing to interactive dashboards and responsive campaign pages

Participated in code reviews, testing, and defect triage sessions, helping ensure delivery quality across sprints and internal client demos

Integrated Elasticsearch to enable fast, full-text search across vehicle listings and campaign data, improving user experience and dealer access to relevant marketing insights

Collaborated with cross-functional teams including designers, QA, and marketing analysts to align technical implementation with campaign objectives and timelines

Education

University of Houston

Bachelor’s degree in Computer Information System 2010 - 2014

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