Backend & AI Engineer · Accra, Ghana

Emmanuel Totimeh

I build the backend that powers it — and the AI
that makes it actually intelligent.

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5+ Years exp.
30+ Projects shipped
12 Happy clients
Python FastAPI LangChain OpenAI API PostgreSQL Node.js Vector DBs Docker RAG Systems AWS Redis LLM Fine-tuning Python FastAPI LangChain OpenAI API PostgreSQL Node.js Vector DBs Docker RAG Systems AWS Redis LLM Fine-tuning

Backend muscle.
AI intelligence.
Real products.

I'm emmatt, a Backend & AI Engineer who builds the infrastructure underneath intelligent products. From high-performance REST APIs and data pipelines, to RAG systems, LLM integrations, and AI-powered applications that actually work in production, not just in demos.

I sit at the intersection of solid engineering and modern AI. I care about reliability, latency, and making sure the "AI layer" doesn't collapse the moment real users show up. Based in Accra — building things that work anywhere.

Things I've
built

01
Python LangChain OpenAI FastAPI

DocuMind

An AI document intelligence platform — upload any PDF or knowledge base and query it in natural language. Built with RAG architecture, semantic vector search, and a streaming FastAPI backend. Sub-2s response times at scale.

What's the refund policy?
Based on section 4.2, refunds are processed within 5–7 business days...
↗ 3 chunks · 1.4s · gpt-4o
02
Node.js PostgreSQL Redis Docker

Fluxgate API

A high-throughput event streaming API handling 50,000+ req/sec with sub-20ms p99 latency. Built with microservices, Redis pub/sub, rate limiting, and a custom backpressure system designed for zero-downtime deployments.

$ fluxgate serve --port 8080
✓ Listening on :8080
✓ Redis connected
→ 50,241 req/s · p99: 18ms
03
Python Whisper GPT-4o AWS

Verbatim

An AI meeting intelligence tool — real-time transcription via Whisper, automatic action item extraction, speaker diarization, and a searchable meeting memory layer. Integrated with Slack and Notion for async teams.

What I
work with

AI Engineering

  • LLM Integration
  • RAG Systems
  • LangChain / LlamaIndex
  • Prompt Engineering

Backend

  • Python / FastAPI
  • Node.js
  • REST & GraphQL APIs
  • System Design

Data & Infra

  • PostgreSQL / Redis
  • Vector Databases
  • AWS / Docker
  • CI/CD Pipelines

AI Models

  • OpenAI / Anthropic
  • Whisper / TTS
  • Fine-tuning
  • Embeddings & Search
"

Emmanuel doesn't just integrate AI, he understands it at the infrastructure level. He built our entire RAG pipeline from scratch, optimised it for production, and made the whole thing feel effortless to maintain. Rare combination of backend depth and AI fluency.

Let's build
something
great.

Open to freelance projects, full-time roles, and interesting problems. Reply time: usually same day.