Sean Ormiston

Sr. Frontend Developer

Sean Ormiston Logo

Summary

Frontend Engineer with 4 years of experience delivering UI solutions for e-commerce and enterprise SaaS products. I've a proven ability to take initiative in the design and implementation of client-side architectures in tandem with UX designers, backend developers, and product stakeholders. I'm also a fast learner eager to work with new technologies, learn new business domains, and share what I know with colleagues.

Skills

Primary:

JavaScript, TypeScript, HTML, CSS, SCSS, Tailwind, ReactJS, NextJS, VueJS, Git, Webpack, Rollup, Vite, Agile/Scrum, Test Driven Development, Release Management, A/B Testing, CI/CD Pipelines, REST, GraphQL, Shopify Plus

Secondary:

NodeJS, Ruby on Rails, .NET, Entity Relation Design, PostgreSQL

Experience

Anatta Design | Senior UI Developer

May 2023 - May 2025 | Remote | anattadesign.com

  • Built a fully custom storefront on a 4-month timeline for a $21M brand.
  • Led technology solution sessions with clients in bi-weekly Agile sprints.
  • Solved DevOps related to Shopify theme management, establishing team workflows to safely manage independent release cycles of code and content.
  • Launched 20+ A/B tests; implemented user behavior data collection.
  • Refactored components to adhere to accessibility standards.
  • Diagnosed and resolved critical production issues with emergency patch deployments.

Unbabel | Frontend Engineer

Feb 2022 - Mar 2023 | Lisbon | unbabel.com

  • Spearheaded development of a SaaS product for translation professionals to administrate AI-driven translation workflows ("Pipelines App").
  • Planned and implemented a phased migration between backend APIs, ensuring zero downtime during a corporate data acquisition.
  • Authored internal developer guide for migrating frontend microapps from Vue2 to Vue3

Priberam Informática | Frontend Developer

May 2021 - Feb 2022 | Lisbon | priberam.com

  • Pioneered integration of Vue components into regions of UI controlled by an in-house JavaScript library, halving development time of new UI features.
  • Authored a two-way converter between Synthetic Speech Markup Language (SSML) and HTML using Test Driven Development principles.

Open Source Contributions

next-auth — PR #12379 — View PR

Repaired visibility of OAuth provider logos in dark theme. Changes affect the library's default OAuth UX flow and docs.

Certifications

Typescript for Professionals By Basarat — Udemy — May 2025

Advanced Typescript training by Basarat Ali Syed — View Certificate

Education

General Assembly | Software Engineering

July 2020 - Sep 2020 | Certification

480+ hours of full-stack training. Built "Squirrel Tales", featured in NYC Open Data's Project Gallery.

CUNY Brooklyn College | Double Bass

2008 - 2012 | B.Mus

Classical and contemporary music theory and performance.

Volunteering

Orquestra Círculo Música da Câmara | Double Bassist

March 2023 - Present | Lisbon

Volunteer with a 25-member string orchestra, presenting 5–6 free concerts per season.