Jinelle Baterna

Mosaic Manufacturing Ltd

Frontend Developer | May 2021

• React
• Redux
• TanStack Query
• TypeScript
• Styled Components
• Figma
• Jest
• React Testing Library
• Playwright

• Proposed and led a component refactor, negotiating timing to protect the release and de-risking it with new test coverage. Cut code duplication 30 to 40% and sped feature rollout 20%.
• Main owner of frontend UI for a 6+ engineer team, handling architecture decisions, PR review, and onboarding new hires. Production bugs dropped 20%.
• Partnered with the product designer to catch design-system and code inconsistencies before implementation, improving design-to-dev handoff speed 25% and keeping products visually consistent.

Mrkdwn, Inc.

Frontend / UX Engineer | Jan 2018 to Mar 2020

• React
• Redux
• HTML
• CSS
• Sass
• REST APIs
• Sketch
• Zeplin

• Built a single-page React application for a Philippines-based deals and discount aggregator site, translating Sketch and Zeplin designs into production UI, including deal-discovery filters and a CMS for admins.
• Added server-side rendering so search engines could actually index the pages, and wired up REST API integration with axios to pull in live data.
• Worked with backend engineers on caching and other performance improvements, and used analytics data to grow engagement from social and organic search, taking daily sessions past 1,000.

Seer Technologies Inc.

Project Manager | Feb 2013 to Dec 2017

• Managed 5 to 10 concurrent technical projects for major Philippine banks, telcos, media outlets, and insurance companies, leading teams of 5 to 10 across engineering, product, and vendors, delivering on time and within budget.
• Ran delivery using Agile, spending a lot of that time balancing what clients wanted against protecting the engineering team from scope creep. Client relationships were strong enough that several turned into repeat business.