Yu ZHANG (pseudoyu) | Indie Developer & Open-source Contributor

By the Numbers

Open source, data and community: the public record so far

10+Years in production engineeringBackend, data infrastructure, distributed systems and product delivery

$29MRSS3 protocol fundingProject scale alongside my ETL, lakehouse, agent and platform work

4M+Creators indexedEuka creator intelligence corpus 10B+Events indexedWeb3Insight data corpus across 200+ ecosystems

100KETL transactions / secondRSS3 multi-chain production pipeline

50TB+Data processedRSS3 production data infrastructure

400M+Monthly requestsRSS3 high-volume service traffic

500M+Database recordsedgeX production data scale

200K+Product usersedgeX product reach

45.6KGitHub stars on RSSHubCore maintainer: 185 commits on the world's largest RSS network 38K+Core developers indexedWeb3Insight also tracks 7K+ ecosystems and 1.4M+ contributors 38.8KGitHub stars on FoloContributor to the AI-native RSS reader 1.3KGitHub followersBuilding in public since 2020: 62 public repos 185Blog posts300K+ visits on pseudoyu.com

20+Talks & workshops1K+ total audience

43Owned source repositoriesPublic GitHub source census 1,984Stars across source reposPublic GitHub repository reach 374Public merged PRsCross-project contribution record 43Recipient repositoriesPublic contribution footprint 235Repositories incl. orgs & private62 public + 19 private personal; 154 across 13 product orgs

Execution recordArchitecture, implementation, maintenance, authored commits, merged patches and production operations.

Scale recordPublic GitHub evidence paired with resume and project data across production systems, protocols and products.

Experience

AI Mage ↗

Full-Stack Developer · Tokyo

Building an AI-assisted quality-control and asset-search platform for anime production (1,212 authored commits on the private monorepo)
Semantic search over production assets with pgvector HNSW indexes
Multi-tenant org/workspace access control; release engineering and internal analytics on GCP Cloud Run

TypeScript · PostgreSQL · pgvector · GCP

Euka AI ↗

Backend Engineer (Infra & Search) · San Francisco

Built OpenSearch hybrid search (keyword + vector + business reranking), replacing pgvector
PostgreSQL query optimization and ClickHouse brand analytics over TB-scale creator data
GCP Cloud Run infrastructure via Terraform; SQS + Lambda indexing pipeline; Inngest jobs

TypeScript · OpenSearch · ClickHouse · PostgreSQL · Terraform · GCP

edgeX Exchange ↗

Senior Backend Developer (Rust) · Singapore

HFT backend serving 200K+ users across 20+ Rust microservices
Tuned a 500M+-record database, improving query performance by 30%
Introduced OpenTelemetry tracing across the microservice fleet

Rust · Microservices · OpenTelemetry

RSS3 ↗

Full-Stack Developer · San Francisco

ETL across 10+ blockchains on 200+ K8s pods at 100K TPS and 50TB+ data
Built a lakehouse with 30+ datasets / 20TB+ (ENS, Mirror, Lens, Farcaster)
FastAPI + LangGraph iOS wallet backend with 20+ Web3 × AI agents; 400M+ monthly requests

Python · FastAPI · LangGraph · Kubernetes · ClickHouse

Zhigui Technology ↗

Backend Engineer / Cross-chain Tech Lead · Beijing

Led a 10–15 person team delivering BaaS/SaaS for China Unicom and China Merchants Bank
Cosmos SDK cross-chain work cut block confirmation from 2s to 800ms
Introduced ArgoCD GitOps, reducing the release cycle from 2 weeks to 5 days

Go · Cosmos SDK · Kubernetes · ArgoCD

Education

The University of Hong Kong

MSc Electronic Commerce & Internet Computing · Department of Computer Science

English-medium programme, Department of Computer Science

Open Source Contributions

Selected by repository adoption and public influence, not personal PR volume · Public GitHub evidence · snapshot 2026-08-09

JavaGuide ↗Contributor ↗

157.6Kproject stars46.2Kforks

One of the largest Chinese-language backend interview and systems knowledge bases, covering Java, databases, distributed systems, concurrency, system design, and AI application development.

Java · Databases · Distributed systems · System design · AI

RSSHub ↗Core maintainer (resume-sourced) ↗

45.7Kproject stars10.1Kforks

Core maintenance spanning route metadata for Folo display, public-instance documentation, and ongoing route operations for a global RSS routing network.

TypeScript · Node.js · RSS

10M+daily feed updates100M+monthly API calls90%+availability

multica ↗Contributor / self-hosted operator ↗

44.9Kproject stars5.7Kforks

Implemented structured ticket search for the open-source coding-agent platform and maintains its self-hosted operations workflow.

Go · Coding agents · Issue search · Self-hosting

Folo ↗Contributor ↗

38.8Kproject stars2.1Kforks

Built language, video-length, and RSSHub recommendation filters, iframe rendering support, and Markdown link rendering fixes for the AI-native RSS reader.

TypeScript · React · RSS · Content rendering

Chinese Independent Blogs ↗Contributor ↗

23.8Kproject stars2.7Kforks

Added pseudoyu.com to a long-running community index of independent Chinese-language publications.

Community index · Independent publishing · Open web

is-a.dev ↗Contributor ↗

10.9Kproject stars26.5Kforks

Added the public pseudoyu domain configuration to a large community-operated developer subdomain registry.

DNS · Community registry · Developer identity

Afilmory ↗Contributor ↗

2.6Kproject stars322forks

Fixed Backblaze S3 API compatibility in the photo-gallery stack to stabilize object-storage integration.

TypeScript · S3 · Backblaze · Media storage

yu-tools ↗Creator / maintainer ↗

1.6Kproject stars97forks

Designed, built, and maintains a public productivity toolbox for repeatable daily workflows.

Astro · Productivity tooling · Web utilities

Go Learning Guide ↗Contributor ↗

736project stars88forks

Public contribution to a Chinese-language Go learning repository spanning fundamentals through practical implementation.

Go · Technical education · Examples

OpenAgent ↗Contributor ↗

354project stars49forks

Implemented feed-agent and DSL tooling, Twitter tools, agent operations, and YAML generation support.

Agents · Feed DSL · Twitter tools · YAML generation

GoCN Translator ↗Contributor ↗

343project stars68forks

Translated and maintained technical articles on Go 1.20 language changes, Go versus Rust, database connection pools, and in-memory key-value databases.

Go · Technical translation · Databases · Language design

zzhack ↗Contributor ↗

328project stars24forks

Extended the community-link surface of a high-performance terminal-style site built with Rust and WebAssembly.

Rust · WebAssembly · Terminal UI

RSS3 Protocol ↗Contributor ↗

317project stars21forks

Added v1.0 social tags, optional protocol fields, tag-level metadata fields, and ODP terminology updates.

Open data · Protocol schema · Metadata · Social tags

Awesome GitHub Profile README ↗Contributor ↗

306project stars67forks

Added the public pseudoyu profile to a community-curated index of notable Chinese-language GitHub profiles.

Developer profiles · Community curation · Documentation

Complete public merged PR census

374 public merged PRs across 43 repositories. Private repositories and commits made without a PR are excluded.

201RSS3-Network/Node 33RSS3-Network/Protocol-Go 21gocn/translator 12RSS3-Network/DSL-v0.4 11RSS3-Network/Docs 10Xuanwo/luban 7openbuildxyz/contract 7RSSNext/Folo 7web3insight-ai/web3insight 6RSS3-Network/Node-Automated-Deployer 5RSS3-Network/RSS3-Network-Contracts 5webisopen/icons 4gocn/How-To-Code-in-Go 4RSS3-Network/Protocol 4RSS3-Network/REPs 4webisopen/OpenAgent 3Zheaoli/cool-weekly 2Crossbell-Box/Crossbell-Contracts 2DIYgod/RSSHub 2djyde/icondog 2djyde/wisetab 1Afilmory/afilmory 1Cluas/nvim 1Crossbell-Box/xShop-contracts 1epubkit/epub-gen-memory 1eryajf/awesome-github-profile-readme-chinese 1golang-minibear2333/golang 1is-a-dev/register 1mistricky/zzhack 1monad-cn/gmonad.cc 1multica-ai/multica 1niracler/nyaruko-telegram-bot 1openbuildxyz/ETH-Shenzhen-2024 1padimaster/deploy-smart-contract-back 1pseudoyu/goatcounter 1RSS3-Network/helm-charts 1RSS3-Network/Whitepaper 1shaform/hugo-theme-den 1Snailclimb/JavaGuide 1timqian/chinese-independent-blogs 1wangeguo/pet 1WTFAcademy/WTF-ethers-v6-doc-cn 1ycraaron/LuotuoCoin

Selected Projects

Web3Insight ↗

Next.js · Hono · Rust · Supabase · MCP

10B+events indexed38K+core developers1.4M+contributors200+ecosystems integrated

Public GitHub evidence · snapshot 2026-08-09393 authored commits ↗

TB-scale Rust ETL pipeline indexing 10B+ on-chain events
MCP server for querying the dataset directly from Claude Code / Cursor
Selected for Amber Group BUIDL_QUESTS 2025
Exhibited at KBW2025 Seoul
Official data provider for the 2025 China Open Source Annual Report (Web3 section)

Euka AI ↗

TypeScript · OpenSearch · ClickHouse · PostgreSQL · Terraform · GCP

4M+creators indexedTB-scalecreator data177authored commits (private monorepo)

OpenSearch hybrid search (keyword + vector embedding + business reranking), replacing pgvector
PostgreSQL optimization + ClickHouse brand analytics
SQS + Lambda indexing pipeline for TB-scale creator data
GCP Cloud Run infrastructure as code with Terraform; Inngest background jobs

AI Mage ↗Full-Stack Developer

TypeScript · PostgreSQL · pgvector · GCP

1,212authored commits (private monorepo)

AI-assisted quality-control and review platform for anime production studios
Semantic search across videos, clips and reference assets with pgvector HNSW indexes
Multi-tenant organization / workspace access control; release engineering and internal analytics on GCP Cloud Run

RSS3 ↗Full-Stack Developer

Python · FastAPI · LangGraph · Kubernetes · ClickHouse

100KETL TPS10+chains50TB+data processed200+Kubernetes pods30+ / 20TB+datasets / lakehouse20+agents400M+monthly requests$29Mprotocol funding

ETL across 10+ blockchains on 200+ Kubernetes pods at 100K TPS
Lakehouse with 30+ datasets / 20TB+ covering ENS, Mirror, Lens, and Farcaster
FastAPI + LangGraph iOS wallet backend with 20+ Web3 × AI agents
Project operation context: Google Cloud, Sky9 Capital and BlockPI

edgeX Exchange ↗Senior Backend Developer (Rust)

Rust · Microservices · PostgreSQL · OpenTelemetry

200K+system users20+Rust microservices500M+database rows+30%query performance

Worked on the Rust HFT backend serving 200K+ users across 20+ microservices
Identified and resolved 10+ performance bottlenecks across 500M+ rows
Implemented OpenTelemetry across HTTP, gRPC and WebSocket paths

ShareX ↗Cofounder

Solidity · TypeScript

50K+users-40%gas0audit vulnerabilities

RWA platform selected for BNBChain MVB Season 10
Smart contracts processing 35K+ / 60K+ / 16K+ transactions
Gas optimized by 40%; zero audit vulnerabilities

Recognition

2025 China Open Source Annual ReportBase analysis for the Web3.0 section credited to pseudoyu, with data support by Web3Insight.ai. Published by KAIYUANSHE in Chinese, English and Japanese.Chinese edition English edition Japanese editionReport

Amber Group BUIDL_QUESTS 2025Web3Insight selected.Award

BNBChain MVB Season 10ShareX selected for the Most Valuable Builder program.Award

Mantle APAC HackathonWinning project (Web3Insights); shared at Mantle Meetup Shanghai, Mar 2025.Award

Credit is limited to Web3.0 base analysis by pseudoyu and data support from Web3Insight.ai, not authorship of the full report.

Talks · complete public registry

18 public presentations · 20+ / 1K+ resume total talks / audience · The resume includes engagements not present in the public registry.

2023-11-18Solidity BootcampSolidity fundamentals and practice; introduction to FoundryOnline · ZH

event ↗PDF ↗

2024-06-06Web3 Frontend BootcampSmart contract development fundamentals and practiceOnline · ZH

event ↗PDF ↗

2023-10-16muChiangMaiBuilding a full-stack social dApp with Solidity on CrossbellChiang Mai · EN

event ↗PDF ↗

2024-06-16AdventureX 2024Building a full-stack AdventureX Badge dApp: hands-onHangzhou · ZH

event ↗recording ↗

2024-06-16AdventureX 2024Solidity contract development fundamentalsHangzhou · ZH

event ↗recording ↗PDF ↗

2024-08-05ETH ShenzhenBuilding a full-stack ETHShenzhen & OpenBuild Badge dApp with Solidity and RemixOnline · ZH

event ↗PDF ↗

2024-10-03Invisible GardenSmart contract development with SolidityChiang Mai · EN

event ↗PDF ↗

2024-10-07Invisible GardenEIPs and ERCs explained; getting started with FoundryChiang Mai · EN

event ↗recording ↗PDF ↗

2024-10-26Invisible GardenThe Foundry frameworkChiang Mai · EN

event ↗recording ↗slides ↗PDF ↗

2025-03-23Mantle Meetup ShanghaiMantle APAC Hackathon winning project: Web3InsightsShanghai · ZH

event ↗slides ↗PDF ↗

2025-03-20Monad 101 BootcampMonad Testnet AMAX Space · ZH

event ↗recording ↗

2025-03-18Monad 101 BootcampLesson 1: entering the Web3 worldOnline · ZH

event ↗recording ↗PDF ↗

2025-03-25Monad 101 BootcampLesson 2: a quick start with SolidityOnline · ZH

event ↗recording ↗PDF ↗

2025-04-01Monad 101 BootcampLesson 3: Solidity development through deploymentOnline · ZH

event ↗recording ↗slides ↗PDF ↗

2025-04-07Monad 101 BootcampHow Monad works and Bootcamp AMAX Space · ZH

event ↗recording ↗

2025-04-23Monad 101 BootcampBootcamp AMA: how developers enter Web3X Space · ZH

event ↗recording ↗

2025-05-09Monad 101 BootcampLesson 7: building a Monad projectOnline · ZH

event ↗recording ↗slides ↗

Public output / writing

150+technical articlesResume-sourced

300K+pseudoyu.com visitsResume-sourced

6K+combined X + Telegram followersResume-sourced

185Chinese-language Markdown entriesCurrent pseudoyu.com source tree

18public talk presentationsPublic registry

Tech Stack

Languages

TypeScript · Rust · Go · Python · Solidity · SQL

Data & Infra

PostgreSQL · ClickHouse · OpenSearch · Redis · ETL · Lakehouse · Docker · Kubernetes · Terraform · ArgoCD · GitHub Actions · OpenTelemetry

Web & Backend

Next.js · React · Hono · FastAPI · Supabase · tRPC · gRPC · Tailwind CSS · Framer Motion

AI & Agents

LangGraph · LangChain · LangMem · Vercel AI SDK · MCP · Vector Embeddings