David Dangerfield

Patterson Companies (Remote)

• Led frontend architecture for a B2B client portal with associated admin experience, consolidating duplicated UI and Vue.js routing into a shared repository with Storybook and mock data
• Designed an app launch pattern enabling decoupled app initialization while preserving shared code
• Upgraded a multibillion-dollar revenue stream by rewriting legacy desktop-only Angular.js bill-pay frontend into a responsive, locale-aware Vue.js/TypeScript/TanStack architecture
• Transitioned into agentic AI development to improve my dev efficiency and software quality
• Engineered a reusable UI component library from Figma designs, integrating Vue.js with a .NET/C# controller backend and mapping SAP responses to user feedback
• Built a localized Customer Reports experience integrating embedded Power BI reports across e-commerce sites, including the supporting UI and integration architecture
• Spearheaded multi-repo infrastructure modernizations, including a frontend linting upgrade and an org-wide JFrog Artifactory migration, each across 20+ repositories

Tech: Copilot, Claude, Node.js, TypeScript, Vue.js, Microfrontends, Microservices, Azure DevOps, JFrog, i18n

Life Time (Remote)

• Led frontend development for the Account team, digitizing the member guest pass experience to support hundreds of thousands of new accounts and app installs
• Architected frontend error reporting using DataDog, giving leaders visibility into user-facing issues
• Spearheaded Vue 3 implementation for "Find A Location" featuring custom Google Maps integration

Tech: GitHub Copilot, TypeScript, Vue.js, DataDog, Vite, Vitest, Playwright, Legacy Modernization, App Integration

Nurocor (Remote)

• Architected compliant UI workflows for a structured authoring platform for FDA clinical trial documentation, supporting document templates, formal reviews, and complete audit trails
• Delivered award-winning frontend engineering for a protocol authoring platform recognized as "Best Integrated Protocol Authoring and Review Solution" by TransCelerate BioPharma

Tech: Vue.js, Nuxt.js, Storybook, GraphQL, Component Libraries

NextEra Analytics (Remote)

• Developed "OMNI" project UIs featuring geospatial maps, diagrams, and dense financial data grids
• Introduced Apache ECharts to unlock a broad library of interactive, animated visualizations not previously practical to build in-house, enabling new product and data analytics charts
• Engineered an Angular-based iPad app via web views to streamline wind-site worker scheduling

Tech: TypeScript, Vue.js, GraphQL, ECharts, Angular, Storybook

Intricately (Acq. by HG Insights) (Remote)

• Engaged directly by CTO as a frontend expert to provide technical oversight and establish best practices across a more junior international team
• Mentored developers and built trust through code reviews and Vue 2 to Vue 3 migration plans

Tech: TypeScript, Vue.js, Node.js

SmugMug (Remote)

• Migrated legacy payments code to Stripe, ensuring a locale-aware UI across 10 global currencies
• Engineered responsive trial-to-subscriber conversion flows supporting dynamic promotions
• Implemented data-driven conversion A/B testing via LaunchDarkly, integrating detailed tracking analytics and user feedback mechanisms, collaborating closely with product, UX, and design

Tech: AWS, Node.js, JavaScript, Next.js, React, Tailwind, GraphQL, Continuous Deployment, a11y, i18n

IBM (Rochester, MN)

• Led frontend engineering for Watson for Drug Discovery (Pfizer), iterating with UX on complex D3.js visualizations to translate 25M+ abstracts and 4M+ patent records into actionable insights
• Built Vue.js application for "Project DOC," a $3M funded clinical decision support application deployed at Su Clinica Familiar to optimize regional diabetes treatment models
• Served as sole UI developer for a custom Vue.js app for call center staff at a major regional U.S. bank; delivered in under 2 months, with time onsite in Alabama, enabling NLP-ingested document search
• Co-founded FED@IBM Rochester, an internal frontend developer community of 30+ engineers hosting twice-monthly sessions on JavaScript, accessibility, UI automation testing, and tooling

Tech: IBM Bluemix (Cloud), Vue.js, Angular, React, JavaScript, i18n, D3.js, Mobile Web App, Legacy Modernization, a11y

Preventice Solutions (now Boston Scientific) (Rochester, MN)

• Built full-stack infrastructure for BodyGuardian, an FDA 510(k)-cleared ambulatory cardiac monitoring platform incorporating Mayo Clinic licensed remote monitoring technology
• Engineered an ActiveMQ message broker pipeline for the Notification Service to batch and deliver structured ambulatory telemetry reports to clinical review teams in a fault-tolerant manner
• Built Java web services for patient compliance app with integration test suite and code coverage
• Implemented claims-based (SAML) authentication flows for the multi-tenant Preventice Care Platform, including multi-role user sessions, ensuring appropriate HIPAA-compliant access controls

Tech: Java, Spring, JavaScript, C#, REST APIs, ActiveMQ, SAML SSO, ASP.NET, SQL Server, Angular

IBM (Rochester, MN)

• Ported IBM Directory Server (LDAP) to IBM i, a commercially shipped enterprise product
• Co-designed test strategy and tool ecosystem for Blue Business Platform, a new product line, leading engineering teams in Beijing to run product validation across multiple simultaneous releases
• Automated software update packaging, eliminating 500+ person-hours annually and enabling self-service builds across teams

Tech: C++, LDAP, REST APIs, Java, JavaScript, Perl, IBM Db2, i18n