You will get In-depth Review of your Next.js/React application's code and architecture.

Name: You will get In-depth Review of your Next.js/React application's code and architecture.
Availability: InStock

Yohannes D.

5.0

Rising Talent

Yohannes D.

5.0

Rising Talent

Project details

I'm a Next.js nerd who's built countless projects and followed every update from both Next.js and React. I don’t just use the framework — I understand its internals, best practices, and edge cases. My reviews go beyond surface-level checks to deliver insights only an experienced developer can provide.

Programming Languages

HTML & CSS, JavaScript, TypeScript

Coding Expertise

Cross Browser & Device Compatibility, Performance Optimization, Security

What's included

Service Tiers	Starter $199	Standard $499	Advanced $999
Delivery Time	2 days	5 days	8 days
Number of Revisions	2	4	6
Number of Pages	1	4	7
Design Customization
Content Upload		-
Responsive Design	-
Source Code	-

5.0

6 reviews

100% Complete

(6)

1% Complete

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Paid technical test – Vedic Moon Sign Calculator

LLM Agent Developer

Software Developer Yohannes is truly one of the best developers I’ve ever worked with. He combines deep technical expertise with clear communication, reliability, and a proactive approach to problem-solving. Every task was delivered on time, with high-quality code and thoughtful solutions that went above and beyond expectations. Working with Yohannes has been an absolute pleasure, and I look forward to collaborating again in the future. Highly recommended!

NuxtJS Front-End and QA Developer

NuxtJS Front-End and QA Developer Yohannes is exceptional. We are continuing to work with him on a new contract.

About Yohannes

AI Agent Engineer | LangGraph - CrewAI - RAG - MCP | FastAPI + Next.js

100% Job Success

5.0 (6 reviews)

Addis Ababa, Ethiopia - 6:37 am local time

Any engineer can build an AI demo. Very few can build one that's still running six months later. Most AI projects fail between "working prototype" and "production system." I'm the engineer who closes that gap.

I'm Yohannes — a Full-Stack AI Engineer specializing in multi-agent systems,
LLM integration, and intelligent workflow automation. I've built production-grade
AI platforms that run 1,000+ workflow executions per day, cut resolution times
from 2 hours to under 10 minutes, and onboarded enterprise tenants in under
7 days. These aren't demo numbers — they're production benchmarks.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

🤖 WHAT I BUILD

→ Multi-Agent Systems — LangGraph, CrewAI, OpenAI Agents SDK for complex multi-step automation
→ Enterprise RAG Platforms — multi-tenant knowledge bases, pgvector, Pinecone, ChromaDB
→ MCP Integrations — tool-calling systems connecting AI agents to live APIs and cloud services
→ White-Label AI Frameworks — configurable, multi-client platforms; one codebase, unlimited tenants
→ Full-Stack AI Products — FastAPI / NestJS + Next.js / React, AWS, Terraform, Docker, CI/CD
→ LLM Integrations — OpenAI, Anthropic (Claude), Gemini, Groq, Hugging Face

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

📊 RESULTS FROM REAL PROJECTS

✅ Built a production-grade AI knowledge management platform — multi-tenant
architecture, org-scoped vector stores, real-time streaming, RBAC, full
AWS deployment with infrastructure-as-code

✅ Engineered a white-label AI framework across fintech, investment management,
and e-commerce — config-driven multi-tenancy, MCP tool orchestration,
multi-layer memory systems

✅ Delivered a hierarchical RAG chatbot for a 1,500+ location retail chain —
5-level org knowledge inheritance, multi-vector-store retrieval, regional
analytics dashboards

✅ Designed and published a reusable AI SDK with 10+ integrations (Gmail,
Notion, Slack, HubSpot, Google Suite) — deployed across 20+ client projects

✅ Delivered 30+ automation workflows at 99.9% API uptime — 800+ tasks weekly
that previously required manual intervention across multiple teams

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

⭐ ON UPWORK

100% Job Success Score · 5.0/5 Rating · 6 Contracts · $12,000+ Earned

"Yohannes is truly one of the best developers I've ever worked with. He combines
deep technical expertise with clear communication, reliability, and a proactive
approach to problem-solving. Every task was delivered on time, with high-quality
code and thoughtful solutions that went above and beyond expectations."
— Verified Client ($8,800 contract)

"Yohannes is exceptional. We are continuing to work with him on a new contract."
— Verified Client (455+ hours)

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

🛠️ HOW I WORK

I architect before I code — you'll get a proposed architecture with tradeoffs
before a single line is written. I communicate proactively: weekly summaries,
early risk flags, full documentation. Async-first and flexible on time zones,
having worked with clients across the UK, Italy, and globally. BSc in Software
Engineering, Addis Ababa University (top 10 in Africa).

You'll always know where the project stands. No surprises.

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📩 LET'S TALK

Building an AI agent, adding LLMs to an existing product, or automating business
processes? Send me a one-line description — I'll respond within 24 hours with
how I'd approach it and whether we're a fit.

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🧰 AREAS OF EXPERTISE

AI & Agentic Frameworks
LangChain | LangGraph | LlamaIndex | CrewAI | AutoGen | OpenAI Agents SDK
Claude Agent SDK | Google ADK | Pydantic AI | n8n | Vercel AI SDK

LLMs & AI Infrastructure
OpenAI API | Anthropic (Claude) | Gemini | MCP | RAG | Pinecone | Weaviate
pgvector | FAISS | Hugging Face | LangSmith | Langfuse

Backend · Frontend · Languages
FastAPI | NestJS | Node.js | Django | React | Next.js | Tailwind
Python | TypeScript | JavaScript | C# | Go | SQL | Bash

Cloud & DevOps · Databases
AWS | GCP | Azure | Docker | Kubernetes | CI/CD
PostgreSQL | MongoDB | MySQL | pgvector

AI Engineering
Multi-Agent Systems | Workflow Orchestration | Prompt Engineering
Vector Databases | LLM Evaluation | Tool Calling | AI Automation | Knowledge Graphs

Steps for completing your project

After purchasing the project, send requirements so Yohannes can start the project.

Delivery time starts when Yohannes receives requirements from you.

Yohannes works on your project following the steps below.

Revisions may occur after the delivery date.

Goal & Priority Alignment

We'll define your key objectives (performance, scalability, security) and identify critical components for focused review.

Architecture Deep Dive

Comprehensive analysis of your app structure, state management, data flow patterns, and Next.js implementation (SSR/SSG/ISR).

Review the work, release payment, and leave feedback to Yohannes.

Select service tier

Starter$199

Standard$499

Advanced$999

Starter Package

for MVPs and early-stage projects to ensure your Next.js app is on solid ground

Delivery Time 2 days
Number of Revisions 2
Number of Pages 1
- Design Customization
- Content Upload

2 days delivery — Jul 5, 2026

Revisions may occur after this date.

Upwork Payment Protection

Fund the project upfront. Yohannes gets paid once you are satisfied with the work.

You will get In-depth Review of your Next.js/React application's code and architecture.

Let a pro handle the details

Let a pro handle the details

Project details

Programming Languages

Coding Expertise

What's included

JK

MB

DL

RR

PC

About Yohannes

AI Agent Engineer | LangGraph - CrewAI - RAG - MCP | FastAPI + Next.js

Steps for completing your project

After purchasing the project, send requirements so Yohannes can start the project.

Yohannes works on your project following the steps below.

Goal & Priority Alignment

Architecture Deep Dive

Review the work, release payment, and leave feedback to Yohannes.

Select service tier

Starter Package