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!
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $48k
Billed in all: $1,693,356$1.69M
$6.8k in the last 6 months
Across 8 contracts
Across 588 contracts
Earnings, last 30 days
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.
- #11Ruby on Rails1,811 freelancers · 🇺🇸 #4Top 0.61%🇺🇸#4 of 230
- #14NodeJS Framework1,512 freelancers · 🇺🇸 #7Top 0.93%🇺🇸#7 of 76
- #21MySQL Programming2,017 freelancers · 🇺🇸 #8Top 1%🇺🇸#8 of 194
- #22WordPress e-Commerce5,046 freelancers · 🇺🇸 #11Top 0.44%🇺🇸#11 of 336
- #70HTML514,581 freelancers · 🇺🇸 #22Top 0.48%🇺🇸#22 of 1,128
- #81MongoDB10,865 freelancers · 🇺🇸 #14Top 0.75%🇺🇸#14 of 522
- #93Laravel12,550 freelancers · 🇺🇸 #23Top 0.74%🇺🇸#23 of 523
- #110CSS19,042 freelancers · 🇺🇸 #40Top 0.58%🇺🇸#40 of 2,074