You will get a clean, tested bug fix or feature for your Vue or Node.js web application
Project details
Get a focused, production-conscious bug fix or a clearly scoped feature for an existing Vue, Node.js, or JavaScript/TypeScript web application.
I will work directly with your codebase to reproduce the issue, trace the root cause, implement a clean change, and verify the affected workflow. You will receive the updated source code together with a concise explanation of what changed and how it was tested.
Choose the package according to the expected complexity and included work limit:
• Starter: one small reproducible issue, with up to 2 hours of investigation and implementation.
• Standard: one medium issue or up to three closely related bugs, with up to 6 hours of work.
• Advanced: one scoped small feature or full-stack issue, with up to 12 hours of work.
Please provide runnable source code, reproduction steps or acceptance criteria, and the relevant technical environment. If the investigation reveals a larger or unrelated problem, I will explain the findings before recommending additional work.
I will work directly with your codebase to reproduce the issue, trace the root cause, implement a clean change, and verify the affected workflow. You will receive the updated source code together with a concise explanation of what changed and how it was tested.
Choose the package according to the expected complexity and included work limit:
• Starter: one small reproducible issue, with up to 2 hours of investigation and implementation.
• Standard: one medium issue or up to three closely related bugs, with up to 6 hours of work.
• Advanced: one scoped small feature or full-stack issue, with up to 12 hours of work.
Please provide runnable source code, reproduction steps or acceptance criteria, and the relevant technical environment. If the investigation reveals a larger or unrelated problem, I will explain the findings before recommending additional work.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$400
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 8 days |
Number of Revisions | 1 | 2 | 2 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$75
Additional Related Bug
(+ 2 Days)
+$150Frequently asked questions
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JH
JIN H.
Aug 10, 2026
Full-Stack Developer for Admin Dashboards (Chinese fluency) - $30 Paid Test, Ongoing Pipeline
Asked him to scope a WeChat Work automation. Instead of quoting, he went and read the platform's official API documentation, then came back and told me the core feature could not be built as specified - and proposed a workable alternative in the same message. That answer cost him the immediate quote and saved me from selling a client something undeliverable. On the paid test he shipped code, README, screen recording and a time log without being chased for any of them. If a developer tells you what will not work before you pay them, keep them.
JF
Joel F.
May 23, 2026
Full-Stack Web Application Developer (Lean MVP / SaaS-Style Platform)
YiKai had been such a delight to work with. I would not hesitate to work with him again and if you are looking to hire a developer I would highly recommend considering him for your project.
JF
Joel F.
Apr 14, 2026
Full-Stack Web Application Developer (Lean MVP / SaaS-Style Platform)
YiKai did an outstanding job on the frontend development for my project. His communication was clear and consistent, and he moved faster than expected without sacrificing quality. He understood the requirements right away and delivered clean, well-structured work that matched exactly what I was looking for.
He was proactive, detail-oriented, and easy to work with throughout the entire process. I’d highly recommend YiKai to anyone looking for a reliable and skilled frontend developer, and I would absolutely work with him again.
He was proactive, detail-oriented, and easy to work with throughout the entire process. I’d highly recommend YiKai to anyone looking for a reliable and skilled frontend developer, and I would absolutely work with him again.
BS
Bruce S.
Mar 1, 2026
Clever panda Developer
I have an ongoing working relationship with YK.
We have moved from an hourly rate to a set fee basis.
Other than that, nothing has changed. He continues to provide a 5 star service.
We have moved from an hourly rate to a set fee basis.
Other than that, nothing has changed. He continues to provide a 5 star service.
AM
Andrew M.
Nov 1, 2025
Front-End Developer for Figma to HTML/CSS/JS Conversion
A great specialist! Technically savvy, attentive to details, fast and responsive. Highly recommend!
About YiKai
Senior Full-Stack Engineer | SaaS & AI Products
100%
Job Success
Shenzhen, China - 8:09 pm local time
I help founders and businesses turn product ideas, complicated requirements, and existing codebases into reliable production software.
I’m a Senior Full-Stack Engineer specializing in SaaS platforms, AI-powered applications, internal business systems, and complex web products.
I can take ownership beyond individual tickets — from understanding requirements and making architecture decisions to frontend, backend, database, deployment, and production troubleshooting.
What clients bring me:
→ “We have an idea but don't know how to build it.”
→ “Our existing developer left and we need someone to take over.”
→ “The MVP works, but now it needs to become production-ready.”
→ “We need AI integrated into an actual business workflow.”
→ “Our system has become difficult to maintain and needs restructuring.”
What I bring:
→ Product thinking, not just coding
→ End-to-end technical ownership
→ Architecture decisions based on real business constraints
→ Clean, maintainable implementation
→ Clear communication about trade-offs, risks, time, and cost
Core stack: TypeScript · React / Next.js · Vue · Node.js / NestJS · PostgreSQL / MySQL · Docker · AWS
If you need someone who can understand the whole product, not just the next Jira ticket, send me what you're building.
Steps for completing your project
After purchasing the project, send requirements so YiKai can start the project.
Delivery time starts when YiKai receives requirements from you.
YiKai works on your project following the steps below.
Revisions may occur after the delivery date.
Scope and reproduce the issue
I review the supplied code, requirements, logs, and reproduction steps, then confirm the affected behavior and agreed scope.
Implement the fix or feature
I trace the root cause and implement a focused, readable change that fits the application's existing architecture.