Randall Gremillion
@randallgremillion1
Senior Frontend Engineer building high-performance Angular/React apps and data visualizations at scale.
United StatesWhat I'm looking for
I build production-grade web applications and complex data visualizations in Angular and React, with a focus on performance, clarity, and maintainability at scale. I lead UI architecture for real-time, data-heavy tools, specializing in making hard analytics dashboards and financial/operational tooling usable and reliable for non-technical users.
I’ve partnered directly with product and stakeholders to ship high-impact features fast—turning messy requirements into shippable UI behavior. In roles across energy, healthcare, and fintech, I’ve built shared front-end systems used across teams, and designed reusable component libraries and platform monorepos to keep complex workflows consistent.
Most recently, I built and evolved an Angular web application for oil exploration workflows, delivering interactive 2D/3D resistivity and well-trajectory visualizations with optimized TypeScript data handling. Earlier work includes designing an Angular energy-sector intelligence UI with D3.js, delivering React Native and Next.js experiences with strong Jest coverage, and owning end-to-end UI development and deployment on Palantir Foundry for pharma analytics compliance.
Experience
Work history, roles, and key accomplishments
Built and evolved an Angular web application for oil exploration workflows, focusing on UX clarity and high-performance visualization for drilling and geology teams. Implemented interactive 2D/3D visualizations and integrated REST APIs to reduce perceived latency while working with large datasets.
Senior Engineer
Trility Consulting
Dec 2023 - Sep 2024 (9 months)
Designed and delivered an Angular UI for an energy-sector sales/finance intelligence tool using D3.js to present insights for non-technical users. Built a production mobile app with React Native and a consumer-facing web experience with React/Next.js, including Jest test coverage and CI/CD handoff.
Built internal data visualization tools on Palantir Foundry (Quiver/Slate), extending Highcharts and D3.js for pharma analytics and compliance needs. Owned UI development and deployment end-to-end with back-end integration in TypeScript and Postgres.
Developed Angular front-end applications on top of a C# service layer for a high-volume lending platform. Used RxJS and Nx to keep the codebase modular and scalable, and used Cypress to improve reliability of regression checks while supporting migration toward microservices.
Senior UI Engineer
ThinkIQ
Oct 2018 - May 2019 (7 months)
Built advanced D3.js visualizations for manufacturing analytics, creating real-time dashboards from factory sensor and process tracking data. Contributed to a Drupal/PHP back end and delivered proof-of-concepts for executive review.
Senior Java Engineer
Security First Corporation
Aug 2015 - Oct 2018 (3 years 2 months)
Delivered full-stack web applications for data cloud security, pairing an AngularJS front end with a RESTful Java back end. Built UI/UX flows for policy management within the DataKeep platform to help customers manage sensitive data protection rules.
VP, User Experience
Orangepeople LLC
Mar 2011 - May 2015 (4 years 2 months)
Founded and led the UI division, building and managing front-end teams serving enterprise clients. Delivered real-time dashboards on top of Scala/Solr/Spark data streams, and earned multiple internal design awards for innovation and usability.
High-Density Well Viewer
Architected and delivered an Angular 16 web application for a high-density geological/well data viewer, including synchronized 2D/3D visualization of resistivity and well trajectories. Implemented fast redraw with unit-aware overlays to support real-time drilling interpretation and replace slower manual workflows.
Education
Degrees, certifications, and relevant coursework
University of Cincinnati College-Conservatory of Music
Doctor of Musical Arts (DMA), Vocal Performance
Activities and societies: Professional performer; 5-year cast member of Phantom of the Opera in San Francisco.
Earned a Doctor of Musical Arts (DMA) in Vocal Performance at the University of Cincinnati College-Conservatory of Music.
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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