Tyler Spencewood

Frontend Lead & Platform Architect

About

Frontend Lead and Platform Architect with 20+ years of experience building high-performance, scalable web applications. Proven expertise in Next.js, React, and TypeScript with a track record of leading comprehensive technical modernization initiatives.

Founding engineer experience at a successful cryptocurrency platform and current technical leader at Target's advertising technology division. Strong background in CI/CD implementation, performance optimization, and cross-team architectural coordination, with experience leading complete products from conception to production.

Experience

Frontend Lead

Target, Minneapolis, MN

March 2023 - Present

  • Leading frontend team building Roundel, Target's advertising platform competing with Google Ads and Amazon DSP
  • Increased test coverage from 40% to 80% by introducing MSW framework and testing excellence practices
  • Implemented Core Web Vitals monitoring with Grafana dashboards for data-driven performance optimization
  • Architected cross-platform authentication solutions and comprehensive CI/CD pipeline with zero incidents

Senior Engineer (Founding Team) - Head of Web

Nomics, Remote

September 2018 - February 2023

  • Employee #1 and Head of Web at cryptocurrency market data aggregator, scaling to #3 global ranking
  • Built entire website using Next.js, scaling to millions of pages with advanced caching and real-time market data
  • Grew userbase from 300 to 100,000 daily users while increasing retention time by 75%
  • Achieved top 5% of global Netlify traffic with 99.9% uptime serving thousands of concurrent users

Senior Engineer

Target, Minneapolis, MN • May 2018 - September 2018

Platform team member focused on target.com performance and user tracking systems.

Principal Engineer

Leadpages, Minneapolis, MN • May 2014 - May 2018

Led complete product development from conception to production for next-generation drag-and-drop landing page builder platform. Architected scalable solutions serving enterprise customers and small businesses, managing entire frontend team and technology stack.

Senior Developer

The Nerdery • ~2008 - 2014

Large client web development projects for major brands including Cheerios, Purina, and Hallmark. Perfect technical assessment scores and enterprise-scale application development.

Web Developer

Wall Street on Demand • ~2008

First professional web development role, building financial data applications and gaining foundational experience in web technologies.

Portfolio Highlights

Roundel Advertising Platform

Frontend Lead • Target

Led development of Target's advertising platform competing with Google Ads and Amazon DSP. Built comprehensive self-service ad platform using Next.js, React, and TypeScript with enterprise-grade performance and scalability requirements.

Next.js • TypeScript • Tailwind CSS • MSW • Grafana • CI/CD

Nomics Cryptocurrency Platform

Head of Web • Founding Team

Built entire website for #3 global cryptocurrency data aggregator from ground up. Scaled to millions of dynamically generated pages serving real-time market data to 100,000+ daily users with advanced caching strategies and performance optimization.

Next.js • React • Redis • Fastly CDN • Real-time Data • OpenTelemetry

Complete Product Leadership at Leadpages

Principal Engineer • Leadpages

Led complete product development from conception to production for next-generation drag-and-drop landing page builder. Managed entire frontend team and technology stack, delivering platform serving thousands of businesses with zero-code website generation.

Complete Product Ownership • Team Leadership • Enterprise Architecture

Skills

Frontend Technologies

React, TypeScript, JavaScript, Next.js, Tailwind CSS, Redux, React Query, Jest, Cypress, MSW

Platform & Performance

CI/CD, Core Web Vitals, Bundle optimization, Advanced caching, CDN implementation, OpenTelemetry

Architecture & Leadership

Platform architecture, Monorepo management, Design systems, Cross-team coordination, Technical mentoring

Backend & Infrastructure

Node.js, PostgreSQL, AWS, Netlify, Fastly CDN, RESTful APIs, Cryptocurrency/Web3 protocols

Geographic Flexibility

Currently Minneapolis, Minnesota • Available for UK opportunities (spouse is UK citizen) • Remote-first experience