Arif Dewi — AI Engineer & Lead Frontend Developer

01 · Current AI work

Production AI engineering

Shipping today. Open source where I can.

● LIVE2026

Nexus Sentinel

Prompt Firewall · AWS + Bedrock

A self-hosted prompt firewall for any LLM. One endpoint — POST /v1/verify — takes a prompt plus a policy and returns a structured allow / redact / block verdict with matched categories, confidence scores, a redacted preview, and a replayable audit log. Built on Amazon Bedrock Guardrails + Claude Haiku with a ports-and-adapters core, so the full test suite and a live demo run offline against deterministic fakes — no AWS account required.

Skills demonstrated

›LLM safety & guardrails
›Prompt-injection defense
›Ports & adapters architecture
›AWS Lambda + API Gateway
›Bedrock Guardrails + Claude Haiku
›Layered rate limiting & cost caps

Stack

TypeScriptNestJSNext.js 16AWS CDKAmazon BedrockClaude HaikuDynamoDBLambdaCloudFrontzod

Signals

◆Lighthouse 100 × 4
◆Runs fully offline (fakes)
◆Live on AWS · CI-gated

Open live demo How it works API reference View source

● LIVE2026

Nexus Recall

RAG Document Explorer

Browser-first RAG document explorer with PDF and Markdown ingestion, local embeddings, IndexedDB vector search, highlighted citations, and streaming AI answers powered by Fireworks.ai, OpenAI, and Claude through the Vercel AI SDK.

Skills demonstrated

›RAG architecture
›Local-first embeddings
›Vector search
›Citation extraction
›Streaming AI chat
›SvelteKit PWA

Stack

SvelteKitSvelte 5TypeScriptVercel AI SDKFireworks.aiOpenAIClaude / AnthropicTransformers.jsLangChain.jsIndexedDB

Signals

◆Browser-first RAG
◆Local embeddings
◆Open source

Open live demo How it works View source

● LIVE2026

Nexus Trace

Streaming AI Agent

Streaming AI agent with live tool-call trace visualization. Ask a question, watch the model search the web, call tools, and reason through its answer in real time. Built with a ReAct loop, SSE token streaming, and a real-time trace UI.

Skills demonstrated

›Agent orchestration
›Tool-call streaming
›ReAct pattern
›SSE / token streaming
›Trace observability UI
›Next.js Server Components

Stack

Next.js 16TypeScriptLangGraphTavily SearchUpstash RedisTailwind CSS v4

Signals

◆Real-time trace
◆Multi-tool reasoning
◆Open source

Open live demo How it works View source

02 · Field record

14 years of production systems

Each one reframed for what it teaches about AI engineering at scale.

01● LIVE

DolaSoft · 2023

Online Education Platform

AI-ready learning infrastructure

Architected an e-learning platform for a major international publisher. 1.8M+ concurrent users, 99.9% uptime. Interactive content, assessment, and a real-time analytics dashboard — the kind of substrate you bolt LLM tutors onto.

Next.jsTypeScriptTanStack QueryTailwind CSSAWS

1.8M+ users

99.9% uptime

02● INTEGRATED

DolaSoft · 2023

Distributed Power Management Dashboard

Realtime systems → LLM-ready telemetry

High-performance realtime monitoring for distributed power infrastructure. 10K+ data points, sub-second refresh, WebSocket with automatic fallback. Foundation for anomaly-detection and natural-language ops copilots.

React.jsTypeScriptWebSocketsRTK QueryThree.js

10K+ data points

99.8% reliability

03● LIVE

Luxoft · 2017

Enterprise Financial Dashboard

Compliance-grade UI for high-stakes data

Deal-processing platform for a major Australian investment bank. $200M+ daily transactions, strict security and compliance. Led distributed teams across 4 countries — same rigor I now apply to LLM evals and guardrails.

React.jsReduxJestREST APIsAngular

$200M+ daily

4 countries

04● LIVE

The New York Times · 2016

NYT Marketing Tools & A/B Testing

Recommendation UX at scale

Marketing tools and an A/B testing framework that lifted digital subscription conversion by 22%. Built the frontend for a recommendation engine that boosted engagement by 35% — the original ML-powered UX work that now translates directly to LLM products.

React.jsAngular.jsNode.jsMongoDB

+22% conversion

+35% engagement

05● ARCHIVED

WINGS Stiftung · 2018

DeFi Trading Interface

Smart contracts & realtime markets

Decentralized trading platform with smart-contract integration. Web3 ecosystem, real-time market viz, advanced security model.

AngularWeb3SolidityEthereum

Smart contracts

DApps

03 · Capability map

What I bring to a team

AI Engineering

Focus

LLM-powered appsAgentic workflowsAgentic code reviewRepo-aware code reviewGitHub App automationRAG / retrievalLocal-first embeddingsVector searchSemantic chunkingStructured citationsTool use & function callingModel Context Protocol (MCP)MCP serversStreaming UXPrompt engineeringEvals & guardrailsLLM eval harnessesLLM safetyPrompt-injection defensePrompt firewallsEmbeddings pipelinesMulti-agent systemsVercel AI SDKLangGraph.jsLangChain.jsTransformers.jsFireworks.aiOpenAIClaude / Anthropic

Frontend Development

Expert

React.jsNext.jsSvelteKitSvelte 5Vue 3Nuxt 3TypeScriptJavaScriptReduxTanStack QueryZustandPiniaReact NativeHTML5CSS3Three.js

UI/UX Development

Expert

Tailwind CSSSassStyled ComponentsFramer MotionResponsive DesignDesign SystemsUser Interface Development

Backend Integration

Advanced

Node.jsExpressNestJSREST APIsGraphQL.NET C#

Cloud & AWS

Advanced

AWS LambdaAPI GatewayAmazon ECRDynamoDBAmazon BedrockBedrock GuardrailsCloudFrontS3SSM Parameter StoreIAM (least-privilege)CloudWatchAWS BudgetsAWS CDK (IaC)CloudFormationServerless architecturePorts & adaptersCost & rate limiting

Web3 Technologies

Advanced

SolidityBlockchain DevelopmentDAppsSmart Contracts

Database Systems

Intermediate

PostgreSQLMongoDBIndexedDBVector StoresMS SQLDatabase Design

Testing & Quality

Advanced

PlaywrightCypressJestTesting LibraryVitestTest-Driven Development

DevOps & Deployment

Advanced

CI/CDGitHub ActionsDockerVercelCloud Infrastructure

Performance Optimization

Expert

Core Web VitalsLighthouseBundle Size OptimizationWeb Performance

Leadership

Expert

Team LeadershipAgile/ScrumProject ManagementTechnical MentorshipCode Reviews

Languages

Native

English (Full Professional)Russian (Full Professional)

04 · Credentials

Verified

Recently formalized — alongside 14 years of production work.

DataCamp

verified · 2026

AI Engineer for Developers

credential · AIEDA0019287935520

LLM AppsRAGTool UseAgentsEmbeddings

view ↗

05 · Studio

Demos & creative experiments

● LIVE

Nexus Sentinel

Self-Hosted Prompt Firewall for Any LLM

POST a prompt plus a policy to /v1/verify and get a structured allow / redact / block verdict — matched categories, confidence scores, a redacted preview, and a replayable audit log. Bedrock Guardrails + Claude Haiku behind a ports-and-adapters core that also runs fully offline against deterministic fakes.

TypeScriptNestJSNext.js 16AWS CDK

Live demo How it works API Source

● PRIVATE

Curo

Repo-Aware AI Code Reviewer · GitHub App

A GitHub App that reviews every pull request like a senior engineer — reading each change in the context of the whole repo, not just the diff. A native Claude-on-Bedrock tool-use loop walks the changed files, their neighbours, and tests through the GitHub API, checks them against a language-agnostic rubric (plus a per-repo .curo-review.md), and posts small, friendly, line-anchored comments. One AWS Lambda — no database, no framework, no LangChain — with an offline eval harness that scores review quality on recall, precision, and stability.

TypeScriptAWS LambdaAmazon BedrockClaude

How it works

● LIVE

Nexus Forge

AI Mind Map with Live Agent Reasoning

Infinite-canvas mind-map with four distinct AI personalities (AXIOM-9, VERN, ORACLE-3, PATCH) that analyze your thinking, stream dry reasoning live, and restructure your map with a click. Custom SVG canvas, SSE streaming, LangGraph workflow.

Nuxt 3Vue 3TypeScriptLangGraph.js

Live demo How it works Source

● LIVE

Nexus Recall

Browser-First RAG Document Explorer

Upload PDFs and Markdown, embed documents locally in the browser, search chunks through IndexedDB vector retrieval, and ask streaming RAG questions with structured citations and document highlighting.

SvelteKitSvelte 5TypeScriptVercel AI SDK

Live demo How it works Source

● LIVE

Nexus Trace

Streaming AI Agent

Streaming AI agent with live tool-call trace visualization. Ask a question, watch the model search the web, call tools, and reason through its answer in real time.

Next.js 16TypeScriptLangGraphTavily Search

Live demo How it works Source

● LIVE

stdio Context7 MCP

Published MCP Server · npm + Docker

A published Model Context Protocol server that streams up-to-date library docs and code examples into any MCP client — Claude, Cursor, Windsurf. stdio transport, native Docker MCP Toolkit support, multi-arch images, and non-root hardening. Distributed on npm and Docker Hub under @dolasoft.

TypeScriptNode.js ≥20.8MCP SDKDocker

npm Docker Source

06 · Writing

Field notes

AI Engineering

Evaluating RAG Systems: Beyond Vibes

How to stop guessing and start measuring what actually matters

2026-05-204 min readRead →

AI Engineering

Streaming AI Responses: SSE vs ReadableStream vs Vercel AI SDK

How I stopped waiting for walls of text and made my AI feel alive

2026-05-205 min readRead →

AI Engineering

The Kingdom of Shattered Memories

Why Your RAG Forgets Where It Left Its Brain — and the Dark Spell That Fixes It

2026-05-216 min readRead →

AI Engineering

Building Your First Production-Ready MCP Server

A weekend project that actually shipped — to npm, Docker Hub, and real AI assistants

2025-10-026 min readRead →

07 · Open a line

Let's build something with AI.

Open to senior & lead roles, contracts, and advisory work — anywhere LLMs, agents, and great UX intersect. Remote-first, comfortable across timezones.

Send email LinkedIn

Email

arifdewi.uae@gmail.com

Phone / WhatsApp

+971 52 750 0822

linkedin.com/in/arifdewi

GitHub

github.com/arifdewiuae

t.me/arifdewi

Location

Dubai, UAE / EU · Remote-First