I will develop or maintain your js application


Level 2
About this gig
Need help building or maintaining your JavaScript app? I'm here to make it smooth and scalable.
Hi! I'm a skilled JavaScript developer with 10+ years of experience creating and maintaining web applications. From dynamic front-ends to full-stack JS solutions, I deliver clean, efficient, and reliable code tailored to your needs.
Services I offer:
- Front-end development (React, Vue, Vanilla JS, etc.)
- Back-end development (Node.js, Express, etc.)
- Fixing bugs and performance issues
- Adding new features or modules
- API integration & development (REST/GraphQL)
- Code refactoring and optimization
- Deployment assistance (Heroku, Vercel, Netlify, etc.)
Tech I work with:
JavaScript (ES6+), React, Vue.js, Next.js, Node.js, Express, MongoDB, Firebase, TypeScript, HTML, CSS, Git, and more.
Why choose me?
- Fast response & reliable communication
- High-quality, maintainable code
- Clear understanding of client goals
- Support for both short tasks and long-term projects
Lets bring your JS project to life or give it the care it deserves! Contact me before placing an order so we can align on scope and timelines.
Looking forward to collaborating!
Get to know Illarion
Engineering your digital products for a real technical advantage
Level 2
- FromLatvia
- Member sinceSep 2024
- Avg. response time4 hours
- Last deliveryabout 18 hours
Languages
English, Latvian, Russian
My Portfolio
Other Software Development Services I Offer
FAQ
What JavaScript technologies do you work with?
I work with Vanilla JS, React, Vue, Node.js, Express, and other popular JavaScript frameworks and libraries. Let me know your tech stack and I’ll jump right in.
Can you help fix bugs in my existing JavaScript project?
Absolutely. I can debug and fix issues in front-end or back-end code, clean up outdated logic, or improve performance and stability.
Do you build JavaScript applications from scratch?
Yes! I can develop full JavaScript applications—front-end, back-end, or full-stack—tailored to your specific business or personal needs.
Can you maintain and update my existing JS app?
Definitely. I offer ongoing maintenance, which includes bug fixes, feature updates, performance optimization, and tech stack upgrades.
Do you work with front-end and back-end JavaScript?
Yes! I handle both
Can you help with API integrations?
Yes, I can integrate REST APIs, GraphQL, third-party services (Stripe, Auth0, Firebase, etc.) into your application and handle any data transformation needed.
Can you optimize the performance of my JS app?
Absolutely. I can review your app for bottlenecks, reduce bundle sizes, improve loading times, and follow JavaScript performance best practices.
What if my app is built with an old JS framework or codebase?
No worries. I can work with legacy code and modernize your application step by step while keeping everything stable and maintainable.
Can you help me deploy my JavaScript app?
Yes! I can assist with deployment to platforms like Vercel, Netlify, Heroku, Firebase, or custom VPS setups using Git, Docker, or CI/CD pipelines.
1 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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D djlanoo

Canada
Excellent work. My Node.js parser issue was resolved, and we identified and addressed edge cases that had been missed, improving the overall parsing logic and stability. The solution was clean, efficient, and well-explained.
$100-$200
Price
1 day
Duration
Helpful?
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
D djlanoo

Canada
Excellent work. My Node.js parser issue was resolved, and we identified and addressed edge cases that had been missed, improving the overall parsing logic and stability. The solution was clean, efficient, and well-explained.
$100-$200
Price
1 day
Duration
Helpful?

