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Mike T.
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Mike T.

React & Next.js Frontend Specialist | Scalable Apps & AI Interfaces

Hi, I’m Mike, a Senior Frontend Engineer with 10+ years of experience building scalable, high-performance web applications using React, Next.js, and Angular. I work with SaaS companies, startups, and enterprise teams to turn designs into fast, maintainable, and user-friendly interfaces that scale with real business needs. Core Expertise & Technologies Frontend Development - JavaScript (ES6+), TypeScript, HTML5, CSS3 - React, Next.js, Angular, Gatsby - Component-driven architecture and design systems - Responsive and accessible UI development - Styling & Collaboration - Styled-components, CSS Modules, Tailwind, Bootstrap - Git, GitHub / GitLab, agile team workflows - Code Quality & Performance - I focus on clean, modular, and maintainable code with strong attention to performance, accessibility, and long-term scalability. - Test-Driven Development using Jest, Mocha, and Sinon - End-to-end testing with Selenium and Protractor - Cross-browser and cross-device validation - AI & LLM Integration Experience In addition to frontend development, I have hands-on experience integrating AI and LLM features into production web applications, including: - Chat and support interfaces using OpenAI / GPT APIs - Context-aware UIs for summarization, classification, and content generation - Secure prompt handling, token optimization, and function calling - AI-assisted workflows and internal tooling I focus on practical, secure, and performant AI integrations that improve real user experiences. What I Bring to the Table - Modern, scalable React and Next.js frontends - Pixel-perfect implementation from design specs - Performance and UX improvements - Clear communication and reliable delivery - Frontend development with optional AI integration expertise Clients looking for a senior React or Angular developer, especially with AI integration experience, will find my skill set well suited to modern web applications. Let’s connect and discuss how I can help bring your product to life. Mike Taatgen

🇺🇸Irving, United States$75/hr100% JSS4.87 (56)Since Jul 2013

Earnings and projects

MRR
$18k

Last 6 months ÷ 6

World#271 / 412k
🇺🇸Country#149 / 62.1k
Revenue, last 30 days
$19k

Last 6 months: $109k

World#301 / 412k
🇺🇸Country#159 / 62.1k
Total earnings
$1.11M

Billed in all: $1.15M

World#440 / 412k
🇺🇸Country#209 / 62.1k
Per project
$14k

$18k in the last 6 months

World#9,996 / 412k
🇺🇸Country#1,744 / 62.1k
Projects, last 6 months
6
33% fixed67% hourly
World#34,405 / 412k
🇺🇸Country#4,906 / 62.1k
Projects in all
78

Across 91 contracts

24% fixed76% hourly
World#37,797 / 412k
🇺🇸Country#5,870 / 62.1k

Earnings, last 30 days

$1.15M+$19.2k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1.13M$1.14M$1.15M$1.16MOct 8Oct 23Nov 7

Skill rankings: #1 in 5 skills of 15

Rarest: top 0.03% in CSS 3, of 9,914. Ranked by MRR among everyone on Upwork with the skill.

  1. 1PSD to HTML2,799 freelancers · 🇺🇸 #1Top 0.04%
  2. 1Sass1,305 freelancers · 🇺🇸 #1Top 0.08%
  3. 1React Bootstrap688 freelancers · 🇺🇸 #1Top 0.15%
  4. 1Jest412 freelancers · 🇺🇸 #1Top 0.24%
  5. 1Gatsby.js318 freelancers · 🇺🇸 #1Top 0.31%
  6. 2Ionic Framework1,184 freelancers · 🇺🇸 #2Top 0.17%
  7. 3CSS 39,914 freelancers · 🇺🇸 #1Top 0.03%
  8. #4Tailwind CSS6,978 freelancers · 🇺🇸 #3Top 0.06%