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Oleksandr K.
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Oleksandr K.

Full Stack Developer, Applied AI, React, Node.js, Python, Wordpress

I am a full stack web developer with over 20 years of experience building robust, scalable, and high-performing applications. I am passionate about clean, maintainable code and delivering top-tier service to my clients. ✅ Backend Development: - Expert in Python (FastAPI), PHP (Laravel, PHP8), PostgreSQL, MySQL, and MongoDB. - Experienced in building REST APIs and microservices architectures for modern web applications. - Skilled in database architecture, optimization, and high-performance systems. ✅ Frontend Development: - Proficient in building dynamic and responsive interfaces using React, Next.js, Bootstrap 4/5, and TailwindCSS. - Extensive experience with Single Page Applications (SPAs) and implementing pixel-perfect designs. -Familiar with modern build tools such as Gulp and Webpack for optimized asset management. ✅ WordPress Development: - Developed numerous custom WordPress themes and plugins, ensuring clean, scalable, and responsive design. - Adept at creating custom post types, Advanced Custom Fields (ACF), and WooCommerce integrations, including payment solutions (Stripe, PayPal, Authorize.net). ✅ DevOps & Cloud Services: - Experienced with AWS (EC2, S3, RDS, ECR, etc.) for cloud deployments, along with Linux server administration. - Strong knowledge of CI/CD pipelines and Docker for seamless development and deployment workflows. ✅ Technologies I work with daily: - PHP 8, Python, Ruby on Rails, Node.js - PostgreSQL, MySQL, MongoDB - HTML5, CSS3/SCSS, JavaScript, ES6, TypeScript - React, Next.js - jQuery - WordPress, WooCommerce I thrive in challenging environments where quality, efficiency, and performance matter. Let’s work together to turn your project into a success!

🇺🇸Roseville, United States$45/hr100% JSS4.67 (324)Since Jul 2015

Earnings and projects

MRR
$7.9k

Last 6 months ÷ 6

World#2,117 / 412k
🇺🇸Country#897 / 62.1k
Revenue, last 30 days
$3.8k

Last 6 months: $48k

World#8,941 / 412k
🇺🇸Country#2,516 / 62.1k
Total earnings
$1.46M

Billed in all: $1.69M

World#209 / 412k
🇺🇸Country#112 / 62.1k
Per project
$2.7k

$6.8k in the last 6 months

World#60,632 / 412k
🇺🇸Country#10,127 / 62.1k
Projects, last 6 months
7

Across 8 contracts

25% fixed75% hourly
World#28,827 / 412k
🇺🇸Country#4,152 / 62.1k
Projects in all
540

Across 588 contracts

50% fixed50% hourly
World#1,483 / 412k
🇺🇸Country#283 / 62.1k

Earnings, last 30 days

$1.69M+$3.8k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1.688M$1.690M$1.692M$1.694MOct 9Oct 24Nov 8

Skill rankings: Top 0.44% in WordPress e-Commerce

Top 1% in 10 of 15 skills, ranked by MRR among everyone on Upwork with the skill.

  1. #11Ruby on Rails1,811 freelancers · 🇺🇸 #4Top 0.61%
  2. #14NodeJS Framework1,512 freelancers · 🇺🇸 #7Top 0.93%
  3. #21MySQL Programming2,017 freelancers · 🇺🇸 #8Top 1%
  4. #22WordPress e-Commerce5,046 freelancers · 🇺🇸 #11Top 0.44%
  5. #70HTML514,581 freelancers · 🇺🇸 #22Top 0.48%
  6. #81MongoDB10,865 freelancers · 🇺🇸 #14Top 0.75%
  7. #93Laravel12,550 freelancers · 🇺🇸 #23Top 0.74%
  8. #110CSS19,042 freelancers · 🇺🇸 #40Top 0.58%