You will get a small full-stack API or AI feature with tests
Project details
You will get one small, clearly specified full-stack, API, or AI feature implemented in an existing codebase. Good fits include one CRUD workflow, API integration, admin filter or form, webhook, scheduled task, or bounded AI or LLM integration. I confirm the acceptance criteria and technical boundary before starting, then implement the feature, add proportionate checks using the existing stack, and provide a written handoff. This package covers up to seven engineering hours and one same-scope revision. Complete MVPs, mobile apps, new design systems, architecture redesigns, payment, legal or KYC decisions, unlimited revisions, and open-ended maintenance are outside the package.
Programming Languages
JavaScript, Java, TypeScriptWhat's included $129
These options are included with the project scope.
$129
- Delivery Time 5 days
- Number of Revisions 1
- Number of Pages 1
- Source Code
Frequently asked questions
About Le
Full-Stack & AI Application Developer | Java, TypeScript, Cloudflare
Shijiazhuang, China - 7:01 am local time
I am best suited to focused work that needs a dependable outcome: fixing a reproducible bug, adding a small API or full-stack feature, stabilizing a deployment, or integrating an AI capability with clear operational boundaries.
What I can help with:
• Java and Spring backend fixes, concurrency and transaction issues
• TypeScript, Node.js, Vue, and React application work
• REST APIs, webhooks, SQL, D1, and integration debugging
• Cloudflare Workers, Docker Compose, Ubuntu VPS, and Caddy deployments
• AI/RAG and LLM integrations with deterministic validation and fallback behavior
• Automated tests, browser verification, deployment checks, and written handoff
I work primarily through written English, requirement checklists, asynchronous progress updates, and screen-recorded demonstrations. Before starting, I confirm the exact deliverable, acceptance criteria, required access, and what is outside the contract.
Steps for completing your project
After purchasing the project, send requirements so Le can start the project.
Delivery time starts when Le receives requirements from you.
Le works on your project following the steps below.
Revisions may occur after the delivery date.
Confirm the feature boundary
I review the requested outcome, acceptance criteria, existing stack, required access, and what is outside the order.
Implement and test the feature
I build the agreed feature in the existing codebase and run proportionate tests, build checks, or browser and API verification.