Singapore · Remote
Block 18,042,391
Available for projects

Arun Raj

Web3 ArchitectureBlockchain ForensicsImmersive Tech
Stack
TypeScript·C# / .NET·Python·Unity3D·Azure·Node.js·Next.js·Solidity·SQL·Docker·WebRTC·HoloLens·Smart Contracts·TypeScript·C# / .NET·Python·Unity3D·Azure·Node.js·Next.js·Solidity·SQL·Docker·WebRTC·HoloLens·Smart Contracts·
01

Web3 Architecture

End-to-end system design — smart contracts, dApps, token infrastructure, and the glue that holds decentralised systems together at scale.

Layer 1 · Layer 2 · DeFi
02

Blockchain Analytics

Transaction tracing, wallet risk scoring, and AML/CTF compliance tooling built for the pace of real investigations.

Forensics · Compliance · Risk
03

Immersive Experiences

HoloLens, Unity3D, and spatial computing — from prototype to production hardware, including holographic demos at Microsoft flagship.

HoloLens · Unity3D · Spatial
10+
Years in Production Software
2014 — Present
50+
Projects Shipped
Across 3 disciplines
16+
Countries Using the Tools
Law enforcement & enterprise
$10M+
Crypto Traced
In active investigations
Worked with
Uppsala SecurityValorem ReplyIdentityMine
About

I build software that doesn't often have a visible interface — forensic tools used by investigators, mixed reality rigs, and analytics pipelines running in the background of real operations.

Right now I'm Principal Engineer at Uppsala Security, where our tools help law enforcement trace stolen crypto across chains and borders.

Before that, seven years at Valorem Reply — most notably HoloBeam, a holographic telepresence system showcased at Microsoft's flagship in New York.

Open to consulting on Web3 architecture · Immersive tech

Specialisations
Web3Blockchain AnalyticsImmersive ExperiencesMicrosoft TechnologiesUnity3DHoloLensC#/.NETTypeScriptSoftware ArchitectureTeam LeadershipAML/CTFMachine LearningRisk Assessment
GitHub Activity— @0k1
1,378Commits
50+Repos
12+Years Active
5+Languages
Python
42%
C#
25%
TypeScript
15%
JavaScript
10%
Other
8%
View profile →
Experience
Block 0xf3a7c1 · Confirmed
Jul 2024 — Present
Uppsala Security
Singapore, Remote

Principal Engineer

Leading engineering on core Uppsala Security products — blockchain analytics platforms and cryptocurrency tracking tools actively used by global law enforcement. Responsible for technical direction, code review standards, and cross-team architecture.

Team LeadershipCode ReviewBlockchain AnalyticsCryptocurrency
Block 0xa2e8d9 · Confirmed
Jul 2021 — Jun 2024
Uppsala Security
Singapore

Senior Software Engineer

Core contributor to Uppsala’s analytics suite: building transaction tracing pipelines, wallet risk classification systems, and fraud detection tooling at the intersection of crypto and compliance.

Software DesignCode ReviewAnalyticsPythonTypeScript
Block 0x6b3f2c · Confirmed
2014 — 2021
Valorem Reply
Cochin, India

Software Engineer II

Seven years building immersive experiences on Microsoft's ecosystem. Designed and shipped HoloBeam — a real-time holographic telepresence system using HoloLens and WebRTC — demonstrated at Microsoft's New York flagship.

HoloLensUnity3DC#WebRTCAzureMicrosoft Technologies
Selected Work2014 — Present
RISKCRYPTO ANALYSIS RISK ASSESSMENT
Machine Learning

CARA

Crypto Analysis Risk Assessment — ML-powered wallet risk classification for AML and CTF compliance workflows used by investigators worldwide.

Risk AssessmentAML / CTFOn-chain Analysis
View Project
AUTOMATED THREAT SCANNING — 20,000+ PROJECTS DAILY
Token Analysis

Scam Scanner

Automated security platform scanning 20,000+ crypto projects daily — surfaces rugpulls, honeypots, and contract vulnerabilities before they harm users.

Security AuditsRisk ScoringReal-time
Explore Platform
NSGLOBAL THREAT INTELLIGENCE — 16+ COUNTRIES
Threat Intelligence

Sentinel Protocol

Global crypto threat intelligence platform used by Interpol and law enforcement across 16+ countries. Supported investigations tracing over $10M in stolen assets.

Law EnforcementForensicsCross-chain
View Platform
HOLOGRAPHIC TELEPRESENCE — HOLOLENS + UNITY3D
HoloLens

HoloBeam

Holographic telepresence on HoloLens and WebRTC — two people sharing a real-time 3D space across distances. Demonstrated at Microsoft's flagship New York store.

Unity3DWebRTCAzureMixed Reality
Learn More
186 km/hREAL-TIME BALL TRACKING — MICROSOFT AZURE
Featured · Sports Tech

Billie Jean King Cup
Match Insights

Real-time tennis analytics — Azure-powered, with ball-tracking cameras and 3D radar delivering live data to broadcasters and fans.

Microsoft AzureSports AnalyticsReal-time DataComputer Vision
Read Article
Earlier Work

Plex for Xbox 360

One of the first third-party C# clients to bring personal media libraries to the console.

C#Xbox 360

Desire2Learn Binder

Windows tablet app for students — built when touch-first on Windows was still being figured out.

WindowsC#

iHeartRadio Player

Radio and podcast streaming for Windows with clean playback UI.

WindowsC#
Get in touch

Let'sbuildsomethinggreat.

If you're working on crypto security, Web3, or spatial computing — or want to talk through a hard technical problem.