D

David Rosas

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Atlántico, Colombia

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Résumé

Jobs verified_user 0% verified
  • OpenText
    Senior .Net Developer | Tech Lead
    OpenText
    Mar 2023 - Current (3 years 3 months)
    Architected and delivered highly scalable, enterprise-grade full-stack solutions across diverse industries including healthcare, finance, B2B SaaS, and e-commerce, consistently leveraging cutting-edge technologies to meet complex business and technical requirements. In healthcare, designed and implemented a robust, HIPAA-compliant data warehouse utilizing .NET 6, Azure DevOps, and AWS cloud services, which efficiently aggregated and served vast volumes of patient data through consumer-facing portals, mobile applications, and administrative dashboards. This involved integrating disparate healthcare data standards such as FHIR and EDI X12 from multiple insurance providers, orchestrated seamlessly via containerized microservices deployed on AW
  • PointClickCare
    Senior Full-stack Developer
    PointClickCare
    Jun 2020 - Mar 2023 (2 years 10 months)
    Oversaw shared component development and critical architectural decisions across multiple software projects using C# .NET versions 2.0, 3.0, and 3.5, elevating code quality and system scalability. Spearheaded the implementation of a robust development workflow that introduced continuous integration, nightly builds, and automated testing pipelines utilizing Team Foundation Server (TFS), significantly increasing deployment reliability and accelerating feedback loops. Ensured system stability and backward compatibility by championing Model-View-Presenter (MVP) architecture principles alongside rigorous testing strategies using Rhino Mocks, enabling seamless functionality across legacy and modern components. In the financial domain, architected
  • BlackBerry
    Software Developer
    BlackBerry
    Nov 2014 - Jun 2020 (5 years 8 months)
    Oversaw and coordinated all technological facets of software projects from initial design and development through rigorous testing and successful rollout, ensuring seamless integration and high-quality delivery. Played a key role in vendor evaluation and selection, developed comprehensive disaster recovery and business continuity plans, and led the strategic hiring and onboarding of skilled developers to expand the team's capacity and expertise. Directed an international, cross-functional development team in building robust, scalable n-tier applications leveraging technologies such as C# 2.0, classic ASP, Web Services, XML, COM+, VB 6.0, and SQL Server 2000/2005. Delivered solutions that addressed complex business challenges, including the
Education verified_user 0% verified
  • University of Waterloo
    Master's Degree in Computer Science
    University of Waterloo
    Jan 2010 - Jan 2014 (4 years 1 month)
    CANADA
Projects (professional or personal) verified_user 0% verified
  • H
    Healthcare Data Warehouse
    A scalable data warehouse that I created to serve consumer, mobile, and admin interfaces with healthcare data using .NET 6, Azure DevOps, and AWS. The Fast Healthcare Interoperability Resources (FHIR) and EDI x12 data were pulled from multiple insurance providers, stored in Amazon DynamoDB using AWS Fargate/Amazon ECS, and synchronized with Elasticsearch and Amazon OpenSearch for quick searching and retrieval.
  • C
    Credit Monitoring API for Preventing Identity Theft
    A credit monitoring API that I created for B2B consumers to determine if a consumer's identity is for sale on the dark web. I used C#, a web API, AWS, Amazon MQ, Fargate Elastic Container Service, and Docker containers.
  • H
    Hedge Fund Corporate Action Event Dashboard
    A dashboard I created for tracking corporate action events for a multibillion-dollar hedge fund using C#, a web API, and React. I gave presentations to other developers on common usage and patterns in React.
  • C
    Commerical Real Estate Servicing Application
    A global, localized enterprise application that I created and maintained to manage commercial real estate using C# with .NET 4.6, Entity Framework, a web API, Angular, and MVC. I built the .NET C# Visual Studio Tools for Office (VSTO) Excel workbook add-in for custom financial modeling and reading and saving data directly from Excel 2016 so users could do all of their modeling work in Excel and easily save it in one place.