I am a Full-Stack Web Developer with 3+ years of experience building scalable, high-performance web applications for remote and freelance clients. I specialize in JavaScript and modern frameworks including React, Angular, Vue, Node.js, and Laravel, with strong backend experience in Python and Django. I have a solid foundation in software engineering principles, backed by a Bachelor’s degree in Software Engineering from The University of Hong Kong. My work includes developing RESTful APIs, SaaS platforms, MERN stack applications, authentication systems, and responsive user interfaces. I enjoy working closely with clients to translate business requirements into reliable technical solutions. Passionate about startups, clean architecture, and continuous learning, I focus on writing maintainable code, optimizing performance, and delivering production-ready systems that scale. I thrive in remote, agile environments and enjoy collaborating across teams to build impactful digital products.…

Karas Merliny

I am a Full-Stack Web Developer with 3+ years of experience building scalable, high-performance web applications for remote and freelance clients. I specialize in JavaScript and modern frameworks including React, Angular, Vue, Node.js, and Laravel, with strong backend experience in Python and Django. I have a solid foundation in software engineering principles, backed by a Bachelor’s degree in Software Engineering from The University of Hong Kong. My work includes developing RESTful APIs, SaaS platforms, MERN stack applications, authentication systems, and responsive user interfaces. I enjoy working closely with clients to translate business requirements into reliable technical solutions. Passionate about startups, clean architecture, and continuous learning, I focus on writing maintainable code, optimizing performance, and delivering production-ready systems that scale. I thrive in remote, agile environments and enjoy collaborating across teams to build impactful digital products.…

Available to hire

I am a Full-Stack Web Developer with 3+ years of experience building scalable, high-performance web applications for remote and freelance clients. I specialize in JavaScript and modern frameworks including React, Angular, Vue, Node.js, and Laravel, with strong backend experience in Python and Django.

I have a solid foundation in software engineering principles, backed by a Bachelor’s degree in Software Engineering from The University of Hong Kong. My work includes developing RESTful APIs, SaaS platforms, MERN stack applications, authentication systems, and responsive user interfaces. I enjoy working closely with clients to translate business requirements into reliable technical solutions.

Passionate about startups, clean architecture, and continuous learning, I focus on writing maintainable code, optimizing performance, and delivering production-ready systems that scale. I thrive in remote, agile environments and enjoy collaborating across teams to build impactful digital products.

See more

Skills

Experience Level

CSS
Expert
Node.js
Expert
MongoDB
Expert
Laravel
Expert
JavaScript
Expert
HTML5
Expert
React JS
Expert
MySQL
Expert
Github
Expert
Express
Expert
AWS
Expert
TypeScript
Expert
Python
Expert
Docker
Expert
Django
Expert
PostgreSQL
Expert
SQL
Expert
Kubernetes
Expert
GraphQL
Intermediate
Redis
Intermediate
See more

Language

English
Advanced
Ukrainian
Fluent
Chinese
Fluent

Work Experience

Full-Stack Web Developer at Freelance / Remote Clients
October 1, 2022 - Present
Freelance full-stack developer delivering scalable web applications for remote clients. Experienced with React, Node.js, Laravel, Python and MERN stack; built REST APIs, SaaS platforms, and responsive UIs; deployed on cloud servers and maintained production systems. Strong in collaboration with startups and cross-functional teams.
Senior Full Stack Developer at Tech Solutions Inc.
January 1, 2023 - Present
Led a team of 4 developers to build a scalable SaaS platform using React, Node.js, and AWS, serving 50,000 monthly users. Reduced API response time by 60% by optimizing MongoDB queries and implementing Redis caching. Migrated legacy monolithic backend to microservices architecture, improving deployment efficiency by 40%. Mentored junior developers, conducted code reviews, and introduced Agile/Scrum practices.
Full Stack Developer at Innovate Apps (Startup)
February 1, 2022 - December 1, 2022
Developed a customer analytics dashboard using React and D3.js, increasing client retention by 25%. Designed RESTful APIs with Express.js for a mobile app, handling 10,000 concurrent requests with Firebase integration. Automated CI/CD pipelines using Docker and GitHub Actions, reducing deployment time by 70%.
Full Stack Developer at Digital Craft Studios
October 1, 2021 - January 1, 2022
Built responsive front-end interfaces with Angular/TypeScript for 10 client projects, improving UX scores by 30%. Collaborated on a Python/Django backend for an e-commerce site, processing $1M in annual transactions. Fixed 150+ critical bugs across apps, improving system stability.

Education

Bachelor of Engineering in Software Engineering at The University of Hong Kong
January 11, 2030 - January 9, 2026
Master of Science in Computer Science at University of Toronto
September 20, 2017 - August 20, 2021

Qualifications

Full-Stack Web Development Professional
August 1, 2023 - January 9, 2026
React Developer Certification
March 1, 2023 - January 9, 2026
Python for Web Development
November 1, 2022 - January 9, 2026

Industry Experience

Software & Internet
    paper Moniwave Dashboard Web App (React + Node.js)

    I built a Moniwave dashboard web application for a startup client using React, Node.js, and MongoDB.

    Key Features:
    User authentication & role management
    Real-time data dashboard
    REST API backend
    Mobile-responsive UI
    Secure payment integration
    Admin panel
    Technologies Used:
    React, Node.js, Express, MongoDB, JWT, Stripe API, Tailwind CSS

    Result:
    Page speed improved: 30%–50%
    Active users: 500–2,000
    Server response reduced: 60%
    Conversion increase: 20%
    Uptime: 99.9%