Brian Merriman

Senior Frontend Engineer | Frontend Software Engineer | Complex Data Applications

New York, NY | b@merriman.xyz | https://merriman.xyz | https://github.com/merriman-xyz

Professional Summary

Senior frontend engineer with 4+ years of experience building and shipping high-performance JavaScript applications for complex data and operational workflows. At JPMorgan Chase, served as primary frontend engineer for a multi-grid analytics workspace and earned promotion to Lead Software Engineer (Vice President) in two years. Expertise in frontend performance, virtualized rendering, WebSockets, state management, local-first architecture, Node.js, and SQL. Seeking a full-time Senior Frontend Engineer or Frontend Software Engineer role.

Skills

Programming: JavaScript (ES6+), SQL, HTML5, CSS3

Frontend: React, vanilla JavaScript, data visualization, frontend architecture, virtualized rendering, web performance optimization, state management, client-side caching

Data and Backend: Node.js, SQLite, IndexedDB, Dexie, REST API integration, WebSockets, local-first synchronization, data modeling

Engineering: Git, deployment

Work Experience

JPMorgan Chase | Lead Software Engineer (Vice President)

New York, NY | February 2025 - May 2026

Promoted from Software Engineer III (Associate) to Lead Software Engineer (Vice President) in two years.
Evaluated large language model (LLM) workflows for legacy application modernization and created reusable project guidance and user interface (UI) component constraints for AI-generated code.

JPMorgan Chase | Software Engineer III (Associate)

New York, NY | January 2023 - January 2025

Served as primary frontend engineer during the product’s first year, building a high-performance multi-grid analytics workspace on a small, fast-moving team.
Enabled users to explore, join, pivot, and retrieve server-held datasets containing 100M+ rows.
Implemented virtualized rendering, visible-window data fetching over WebSockets, client-side caching, and state management to keep every grid responsive.

OKG Tech | Software Engineer

New York, NY | March 2022 - December 2022

Shipped an updated bus-ticketing application using React and Node.js as the primary implementation engineer on a team of four.
Developed scheduling, vaccination, appointment reminder, and clinical workflow features integrated with eClinicalWorks and existing operational systems.

Yunshang Tea | Co-Founder

Zhejiang, China | September 2015 - November 2021

Managed retail and wholesale operations for a specialty tea business.
Built database workflows for inventory, sales, and business operations.

Selected Projects

Ingrid (2026): Built a local-first hierarchical grid application using JavaScript, IndexedDB, and Dexie for client-side persistence, with production cloud synchronization and subscription billing.
Showdown Elo (2026): Built an automated nightly Major League Baseball (MLB) ratings and data visualization publication derived from 8M+ Statcast pitches; benchmarked the models against betting markets and published the negative result.

Education

Manhattan College | Bachelor of Arts (BA) in Computer Science

Bronx, NY | Magna cum laude | Phi Beta Kappa