Available for new opportunities

Hi, I'm Darian

Software Engineer who turns ideas into shipped products
I build software that ships. I enjoy turning ideas into working products, learning new stacks along the way, and solving real problems for real people.
Read my storyLet's talk
Ships fast
Loves the craft
Polyglot engineer
0+Years coding
0+Technologies
0Career phases

“Darian picked up our payments module quickly and delivered on time. He adapts fast to new codebases.”

— Ted Lee, CTO of Fintech Platform

Capabilities

What I bring to the table

A toolkit forged across decades of shipping real software to real users.

Favorites

C#Windows ProgrammingAndroid Development

LLM & Generative AI

GPTGeminiLLaMAMistralPrompt EngineeringRAGAI Agents

LLM Orchestration & Search

LangChainLlamaIndexPineconeWeaviateChromaEmbedding Pipelines

ML Engineering

Scikit-learnTensorFlowKerasClassificationAnomaly DetectionPandasNumPySciPy

Backend

PythonNode.jsFlask/FastAPIREST / GraphQLASP.NETPHPJava

Frontend

ReactTypeScriptNext.jsTailwind CSSViteSvelteHTML/CSSAngular

Cloud & Infra

AWS (EC2, S3, Lambda)GCPDockerKubernetesTerraformCI/CDNginxRedis

Databases

MongoDBOracle DBPostgreSQLMySQL

Blockchain / Web3

SolidityEthers.jsWeb3.jsSmart ContractsWeb3 StorageWeb3 Wallet Development

Mobile

Android (Java, Kotlin)Cocos2DCordovaIonic

Foundations

C/C++PascalQt

Selected work

Projects I'm proud of

From AI to hardware to fintech at scale — a few highlights from the journey.

AI Expert Marketplace

Platform that matches vetted AI experts with clients. Built a LangChain-orchestrated multi-model evaluation pipeline (LLaMA, Mistral, GPT, Gemini) for parallel expert scoring, a hybrid fraud detection system (LLM + ML anomaly detection), and RAG-powered semantic matching using vector embeddings.

LangChainRAGPineconeWeaviateGPTGeminiAWS
Impact

Ensemble scoring across 4 models (LLaMA, Mistral, GPT, Gemini) — each evaluates different dimensions: technical depth, domain specificity, communication clarity. Two-layer fraud detection caught semantic inconsistencies that rule-based systems missed. RAG matching via Pinecone/Weaviate replaced keyword search entirely.

Payments Module

Led the payments module for an e-commerce platform at Alibaba scale. Designed secure transaction flows, multi-party settlement logic, and blockchain-inspired transaction signing.

Node.jsMongoDBOracle DBBlockchain
Impact

Secure transaction flows with multi-party settlement logic at Alipay scale. Blockchain-inspired signing gave every transaction a cryptographic foundation. Balanced MongoDB for speed and Oracle DB for consistency across the full order lifecycle — vendor management, inventory, and payments across multiple storefronts.

Smart Gate Vision System

Computer vision pipeline processing 280 Hikvision camera feeds to control physical access gates via PLC/Arduino integration. Also built a thermal-imaging attendance system during COVID.

Computer VisionPLCMicrocontroller COpenCVHIKVision SDKQtC++Thermal Imaging
Impact

280 Hikvision camera feeds processed in real time to control physical access gates via PLC integration. Every gate open/close cycle had to be reliable — software failures meant real vehicles stuck at real gates. Thermal imaging extension during COVID added anomaly detection on top of access control.

Journey

Career phases

Every phase taught me something new — and I loved every step.

Early Beginnings
Childhood — early teens
Started with legacy Windows systems (Win95 through Vista), learned Pascal, Visual Basic, Delphi, and Flash Script before moving into C/C++, Windows NT Programming, APIs, MFC, and Qt. Built a VNC-style remote desktop tool as a teenager.
PascalVisual BasicC/C++Win32 APIMFCQt
Software Developer Intern — KOAST
Dec 2014 – Sep 2015
First professional assignment: built Tetris for a new-hire competition, ported SWF Flash games to Cocos2D for Android and iOS, built a 3D modeling tool integrated with Autodesk Revit, and developed an offline dictionary app for architects.
Cocos2DAutodesk Revit SDK3D ModelingAndroidiOS
Software Engineer — NovaCircuit
Oct 2015 – Feb 2019
Handled multiple projects simultaneously: endpoint monitoring with screen recording and behavioral anomaly detection, CAPTCHA recognition with image processing, web/desktop video conferencing (WebRTC), HWP 5.0 document parsing for LibreOffice, Android/Unity APK reverse engineering, KakaoTalk desktop client contributions, and a product sales platform.
Node.jsMongoDBWebRTCAndroidLibreOfficeImage ProcessingASP.NETCordovaIonic
Senior FullStack Engineer — NeuralBridge
Mar 2019 – Present
Started with hardware-software intersection: 280 Hikvision cameras with PLC/Arduino gate control, thermal imaging attendance during COVID. Then led payments for an Alibaba/Alipay-scale e-commerce platform with blockchain-inspired transaction signing. Since 2022, focused on AI: expert marketplace with multi-model evaluation (LLaMA, Mistral, GPT, Gemini), fraud detection, RAG-powered matching, AI book writing assistant, real-time crypto analytics, and an LLM-driven Telegram swap bot.
LangChainRAGPineconeGPTGeminiReactAWSC#MongoDBComputer VisionBlockchain

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See the complete resume with all experience, skills, and education.

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10+

Years building software across every layer of the stack.

“Darian picked up our payments module quickly and delivered on time. He adapts fast to new codebases.”
T

Ted Lee

CTO of Fintech Platform

“He genuinely enjoys programming, and that shows in his work. A reliable engineer who gets things done.”

E

Engineering Manager

NovaCircuit

“From hardware integration to AI services, Darian is versatile and dependable. A solid addition to any team.”

C

CTO

NeuralBridge

Writing

Latest posts

Thoughts, stories, and lessons from the trenches.

CareerStory

My Story

The full journey from Windows 95 to AI — how I became the developer I am today.

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Let's create something meaningful

Whether you need a technical lead, a full-stack builder, or someone who can dive into any codebase and ship — I'm ready.

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