Available for new projects

Build Systems
That Scale Your
Business

I'm Diman Ranawaka, an Agentic AI Engineer who builds the AI automation, and infrastructure that turns your workflow into a predictable growth engine.

Diman.AI
DR
AI
N8N
80+

80+ automated systems built

Saving clients 10,000+ hours annually

Agentic Automation Hub · Live
n8n Webhook
OpenAI Agent
Data Extractor
Vector DB
Make + API
HubSpot CRM

24/7

Autonomous Uptime

All systems go

99%

Task Success Rate

+2.4% this month

Hours Saved Today

142

↑ 23% vs yesterday

Pipeline Value Generated

$84K

↑ 18% this month

Trusted Tools & Platforms I Implement

n8n
OpenAI / GPT
Claude
LangChain
Ethereum
Hardhat
Solidity
AWS
Vercel
Docker
Zapier
n8n
OpenAI / GPT
Claude
LangChain
Ethereum
Hardhat
Solidity
AWS
Vercel
Docker
Zapier
What I Do

Expertise & Offerings

From AI automation and agentic workflows to smart contracts and decentralized apps — full-stack expertise at the intersection of AI and Web3.

01

Workflow Automation

Streamlining business operations by connecting your scattered SaaS tools into unified, zero-touch n8n workflows.

n8nMake.comZapierCustom APIs
02

Custom API Integrations

Building robust, bespoke bridges between legacy systems and modern platforms to ensure seamless data flow.

RESTGraphQLWebhooksOAuth
03

Autonomous AI Agents

Engineering intelligent, goal-driven agents that reason, plan, and execute complex business tasks on your behalf.

LangChainCrewAILangGraphGPT-4o
04

RAG Systems & LLMs

Developing secure AI applications that chat directly with your private business data for instant, accurate insights.

EmbeddingsVector DBClaudeFine-tuning
05

Blockchain Development

Building decentralized applications, smart contracts, and Web3 integrations on Ethereum, Solana, and EVM-compatible chains.

SolidityHardhatEthers.jsERC Standards

How We Work Together

A structured, frictionless process designed to take you from initial concept to a fully deployed automation system.

1

Discovery & Strategy

Deep dive into your business workflows to identify high-ROI automation and AI opportunities.

2

Architecture & Design

Designing a scalable, robust system using n8n and LLM frameworks tailored exactly to your needs.

3

Build & Integrate

Developing the solution, writing custom code, and seamlessly integrating with your existing software stack.

4

Deploy & Handoff

Launching the system, providing comprehensive documentation, and ensuring a smooth transition to your team.

Selected Work

Featured Projects

Real-world impact driven by intelligent automation, AI agents, and decentralized systems.

01
OpenAIn8nHubSpot

Automated Lead Qualification Agent

An autonomous agent that qualifies inbound leads via email, scoring them and syncing directly to HubSpot.

Hours Saved

40/wk

Conversion

+25%

02
LangChainClaudeZendesk

Customer Support RAG System

A specialized AI assistant that chats with private technical documentation to instantly resolve customer tickets.

Resolution

Instant

Ticket Deflection

60%

03
Make.comShopifySlack

End-to-End Fulfillment Automation

A completely zero-touch automation pipeline connecting Shopify orders, warehouse APIs, and Slack notifications.

Errors

0%

Speed

10x Faster

04
SolidityHardhatEthers.js

DeFi Staking & Reward Protocol

A gas-optimized EVM smart contract system enabling token staking with dynamic APY, deployed on Ethereum mainnet.

TVL at Launch

$1.2M

Gas Savings

38%

Client Stories

Trusted by Founders & Growth Teams

Don't take my word for it, here's what clients say about working together.

"We brought Diman in to overhaul our entire lead pipeline using n8n. Within weeks he had built a multi-stage automation that captured, scored, and routed leads into our CRM without a single manual touch. Our sales team went from spending hours on admin to focusing purely on closing. Absolutely game-changing."

IM
Isuru M.Founder, Eydiate (Pvt) Ltd

"Diman built a custom RAG system connected to our entire internal knowledge base. Our support team used to spend hours hunting for answers, now the AI surfaces the right document in seconds. The LLM integration was seamless and he walked us through every architectural decision. Rare to find someone who genuinely cares about outcomes."

RA
Rohitha A.CEO, R&R ASSOCIATES

"Diman delivered our DApp on zkSync ahead of schedule and with zero security issues after audit. He understood the constraints of ZK rollups deeply and made smart architectural choices that saved us gas costs by over 60%. If you need someone who bridges smart contract development with real product thinking, he's your guy."

RK
Ravindu K.Freelance Developer
AI Digital Twin

Chat with Diman.AI

Ask me anything about my services, process, or how I can help your business. I respond like Diman — because I'm trained on his expertise.

DIMAN.AI
Diman Ranawaka

Hi, I'm Diman.

This AI is trained on my work and experiences. Ask me anything.

Diman

Hi! I'm Diman's AI digital twin 👋 I can answer questions about his services, process, pricing, or how he can help your business. What would you like to know?

AI responses are based on Diman's expertise — book a call for specifics.

Diman Ranawaka
Open to new projects
LinkedInUpworkGitHubInstagramThreadsWhatsApp
About Me

Building at the Edge of AI, Automation & Web3

I'm Diman Ranawaka a full-stack engineer specialising in three areas most developers treat as separate worlds: Agentic AI, workflow automation, and blockchain development.

Whether you need autonomous AI agents that run your business 24/7, zero-touch n8n pipelines that replace entire departments, or production-ready smart contracts on EVM chains. I don't just consult, I build and ship.

20+Systems Built
2+Years Experience
10+Happy Clients
99%Success Rate
01

Autonomous intelligence

Agentic AI

LLM-powered agents that reason, plan and execute complex tasks end-to-end RAG pipelines, multi-agent orchestration, OpenAI, Claude, LangChain.

OpenAIClaudeLangChainRAGCrewAI
02

Zero-touch workflows

n8n Automation

End-to-end automation pipelines that eliminate manual work, connect your entire SaaS stack, and keep your business running 24/7 without lifting a finger.

n8nMake.comZapierAPIsWebhooks
03

Decentralised products

Blockchain Dev

Gas-optimised smart contracts, DeFi protocols, and full-stack Web3 dApps built on Ethereum, Solana, and EVM-compatible chains.

SolidityHardhatEthers.jsDeFiEVM
Credentials

Certified Across the Tools I Build With

Anthropic

Issued April 25, 2026

Certified

Claude Code in Action

Awarded to Diman Ranawaka

MCPTool UseAI AgentsClaude SDK

ID: g8z6uv45wmrs

Verify Credential
LET'S WORK TOGETHER

Ready to Scale
with Systems?

Whether you're starting from scratch or fixing a broken stack, let's map out exactly what you need and how I can help.

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