You will get NestJS Backend MVP with AI Integration
Project details
From idea to deployed product in 3-4 weeks. NestJS 11 REST API — typed, tested, documented, ready to hand to your frontend or scale on top of.
What you get (Standard tier):
• NestJS 11 REST API with JWT auth (access + refresh tokens), role-based guards.
• PostgreSQL + Drizzle ORM, schema migrations, seed script.
• 1 LLM endpoint (OpenAI / Claude / Groq) with demo-mode fallback.
• Zod validation, Helmet + CORS allow-list, in-memory rate limiting.
• Swagger /docs + Vitest tests (unit + e2e).
• Dockerfile + docker-compose for local dev.
• Deploy to Railway / Fly.io / AWS — your pick.
• Repo access, docs handover, 30 days async support.
Template proof (public): github.com/FedeCione/nestai-starter — the exact scaffolding I start from. 18 passing tests, fully documented, MIT licensed.
~2.5y production backend dev (Node.js + Python) at a LATAM B2B SaaS (NDA). Typed, tested code or I don't ship. Native Spanish. Written English — async-first; voice optional for kickoff or demo. GMT-3, US business hours overlap.
Send 3-5 sentences on the product + the endpoints you need.
What you get (Standard tier):
• NestJS 11 REST API with JWT auth (access + refresh tokens), role-based guards.
• PostgreSQL + Drizzle ORM, schema migrations, seed script.
• 1 LLM endpoint (OpenAI / Claude / Groq) with demo-mode fallback.
• Zod validation, Helmet + CORS allow-list, in-memory rate limiting.
• Swagger /docs + Vitest tests (unit + e2e).
• Dockerfile + docker-compose for local dev.
• Deploy to Railway / Fly.io / AWS — your pick.
• Repo access, docs handover, 30 days async support.
Template proof (public): github.com/FedeCione/nestai-starter — the exact scaffolding I start from. 18 passing tests, fully documented, MIT licensed.
~2.5y production backend dev (Node.js + Python) at a LATAM B2B SaaS (NDA). Typed, tested code or I don't ship. Native Spanish. Written English — async-first; voice optional for kickoff or demo. GMT-3, US business hours overlap.
Send 3-5 sentences on the product + the endpoints you need.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$500
|
Standard
$1,800
|
Advanced
$4,000
|
|---|---|---|---|
| Delivery Time | 10 days | 21 days | 28 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$150 - $700
Additional Revision
+$50
Additional REST Endpoint
(+ 2 Days)
+$150
RAG + Vector DB Integration
(+ 5 Days)
+$400
30 Days Extended Support
+$200Frequently asked questions
About Federico
Backend Engineer | NestJS, LangChain, RAG, WhatsApp AI Chatbots
Campana, Argentina - 4:29 am local time
Here's what I build:
• AI chatbots & virtual assistants — WhatsApp Business, web widgets, custom channels. Intent detection, FAQ + human handoff, conversation logs, admin dashboards.
• AI process automations — lead enrichment, document parsing, CRM sync. LangChain/LangGraph orchestration. Integrations with Sheets, Notion, HubSpot, n8n, Zapier.
• AI backend MVPs — NestJS REST APIs with JWT auth, Postgres + Drizzle, Zod validation, Swagger docs, Docker, CI. 3–4 weeks from idea to deployed product.
Tech stack I work with daily:
• Backend: NestJS, Node.js, Express, TypeScript, Python (FastAPI / Flask).
• AI/LLM: LangChain, LangGraph, RAG + vector DBs (Pinecone), OpenAI, Claude, Groq/Llama. Prompt engineering, structured output (Zod / Pydantic).
• Databases: PostgreSQL + Drizzle/Prisma, MongoDB, MySQL, DynamoDB.
• DevOps: Docker, AWS (EC2/Lambda/S3), Vercel, Railway, Serverless.
• Testing: Vitest, Jest, Supertest, pytest.
Live proof (code + deployed):
• ChatPyME — WhatsApp-style AI assistant with intent routing + human handoff.
• AutoLeads — AI lead-classification dashboard (structured extraction, priority scoring).
• NestAI-Starter — production-grade NestJS + AI backend template with auth, tests, Docker, Swagger.
How I work:
• Fixed-scope / fixed-price for productized deliverables; hourly for open-ended work.
• Weekly demos, code in your repo from day one.
• Typed code (TS / Python), tested, deployed via Docker / Vercel / Railway.
• Docs handover + 30 days post-launch support.
• Spanish native, English fluent. Based in Argentina — GMT-3 overlaps US business hours end-to-end.
If you have a clear brief — send it, I reply within a few hours. If you're still scoping, I offer a free 20-min discovery call to help shape it.
Steps for completing your project
After purchasing the project, send requirements so Federico can start the project.
Delivery time starts when Federico receives requirements from you.
Federico works on your project following the steps below.
Revisions may occur after the delivery date.
Scoped discovery brief (async-first)
You answer 6-8 scoped questions in Upwork chat or share a short Loom of your product. I reply with a written scope doc, data-model sketch, and timeline. Voice kickoff optional.
Schema + endpoint design review
I draft the Postgres schema (Drizzle), OpenAPI spec, and JWT auth flow. You review and approve via Upwork message before I write a line of code.