Join PaiRuan
Careers
We hire engineers who care about Web3, product quality, and responsible use of AI.
Ship product-grade software where the internet, blockchain, and AI meet—then walk us through how you think in our technical assessment.
Company highlights
What we build
The capabilities behind our public site—trusted by enterprises and Web3 pioneers.
Internet & product engineering
High-performance experiences, modular frontends, dependable APIs, and delivery practices that keep teams shipping.
Blockchain & digital assets
Smart contracts, wallets, identity, storage, and toolchains grounded in deployment and security realities.
Applied AI
Embedding models with observability, cost control, and human review on critical paths.
Stacks & domains we touch often
TypeScript · Vue / Nuxt · Node & edge runtimes · Solidity & EVM tooling · SQL & object storage · LLM APIs & RAG-style workflows · multilingual content pipelines
How we work
Clear ownership, crisp writing, pragmatic trade-offs. The assessment is one signal—your work samples and collaboration style matter too.
About the online assessment
If invited, use the credentials we issue. Each paper has 10 questions; some roles enable optional in-app AI with transparent review.
- 1HR or hiring manager creates your test account and assigns a paper.
- 2You log in with the username and password we provide.
- 3Answer 10 questions within the session. Open-book style where AI is enabled is allowed only for that paper.
- 4Submit the paper. We review objective scores plus written answers and any AI usage you chose to share.
Ready to show how you solve problems?
Sign in with your issued username and password to begin.
Start assessment (login)