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Difficulty - Medium

Total Plays - 10

Allowed Time - 10 sec

Best time - 3.127 sec

Why document invariants during audit?

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#A

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#C

#D

Explanation:
Invariants are rules that must always remain true in a contract. Documenting them helps validate whether your core logic stays consistent after every transaction.

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Application deadline: 1 month

E

Integrations Engineer (Web3)

ENS Labs • FULL_TIME • NA

Job description

ENS Labs, the development team behind the Ethereum Name Service protocol, is seeking a Web3-focused Integrations Engineer to advance ENS adoption across wallets, SDKs, dApps, L2 networks, developer libraries, and other crypto infrastructure. This role combines hands-on engineering work with external collaboration, contributing code directly to open-source projects that integrate...

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Application deadline: 2 days

W

Security Engineer

WorkOS • FULL_TIME • NA

Job description

WorkOS builds developer-focused infrastructure that helps SaaS companies implement authentication, identity, authorization, and enterprise-readiness features. The company operates as a fully distributed team across North American time zones and serves a large base of growing software companies.The Security Engineer role sits within the security team and is responsible for defining,...

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SmartChainSmith

@SmartChainSmith • 2mos

Managing a DAO product feels chaotic — how can you keep decision-making flexible without slowing things down?

I recently transitioned into a DAO Product Manager role after 4 years in SaaS PM. I’m finding it hard to manage product priorities when contributors are part-time and governance proposals...

1

Replies
CryptoSagePriya

@CryptoSagePriya • 3mos

How Do Web3 Community Managers Prove Real On-Chain Engagement When Founders Expect More Than Discord Metrics?

I’ve been handling community growth for an early-stage NFT + DeFi project, and we’re trying to move past counting Discord members. The founders now want me to “show on-chain engagement,”...

2

Replies
Application deadline: 3 days

S

Principal Product Designer

Superduper • FULL_TIME • NA

Job description

Superduper builds Web3 products across decentralized finance and digital entertainment, including trading platforms and gaming experiences. The Principal Product Designer role leads design across this multi-product ecosystem, covering both high-stakes financial interfaces and engagement-driven gaming environments. This position owns design direction across UX, UI, and interaction design, translating product strategy...

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Merrythetechie

@Merrythetechie • 2mos

From Ops Lead to DAO Ops Manager: How Do You Build Processes When No One Reports to You?

After years leading operations in fintech, I’ve joined a DAO where hierarchy doesn’t exist. People “vote” to do tasks but rarely follow through. Accountability feels optional, and traditional reporting lines...

1

Replies
Application deadline: 1 month

L

Senior SDET

Ledger • FULL_TIME • NA

Job description

Ledger is hiring a Senior SDET to support quality assurance across its digital asset and Web3 product environment by enabling automation, improving testing methodologies, and enhancing CI/CD reliability. This role involves designing automation tools, creating test frameworks, and working closely with product teams to embed test ownership into development workflows....

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Application deadline: 1 month

C

Senior Analytics Engineer

Consensys • FULL_TIME • NA

Job description

This role supports Consensys’s Data team, responsible for transforming raw data into reliable, analysis-ready models that power KPIs across Finance, Product, and Leadership. As a Senior Analytics Engineer, you will design, build, document, and maintain data models and semantic layers, while ensuring accuracy, governance, and consistency across the organization. You...

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ChainPenLilly

@ChainPenLilly • 2mos

From Ops Lead to DAO Ops Manager: How Do You Build Processes When No One Reports to Yo

After years managing structured operations in fintech, I’ve joined a DAO where “ownership” feels entirely voluntary. Contributors self-assign tasks, disappear mid-way, or debate endlessly in governance chats. There’s no escalation...

0

Replies
Andria Shines

@ChainSage • 2mos

How do Technical Product Owners translate complex bridge infra into simple UX language?

As a Technical Product Owner team member for a cross-chain bridge project, I’m stuck balancing developer transparency with user simplicity. Our bridge supports five networks, but every UX simplification breaks...

1

Replies
DeFiArchitect

@DeFiArchitect • 3mos

How Do Solidity QA Engineers Validate CEI Patterns in Real Audit Workflows When Storage Updates and Calls Overlap?

CEI (Checks-Effects-Interactions) gets mentioned in almost every audit report, yet actually proving that a contract follows it feels unclear in day-to-day QA work. During a Layer-1 DeFi audit shadow I...

1

Replies
Application deadline: 1 month

U

Engineering Manager — Protocol

Uniswap Labs • FULL_TIME • NA

Job description

Uniswap Labs is hiring an Engineering Manager for its Protocol team, responsible for leading engineers who design and maintain the smart contract systems behind Uniswap V4, UniswapX, and future protocol iterations. The role involves owning architectural direction, managing engineering execution, and ensuring rigorous security practices across Solidity-based development. You will...

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amanda smith

@DecentralizedDev • 2mos

Should Early-Stage DeFi Projects Still Invest in Community Marketing?

I’m advising an early-stage DeFi project in India with under $2M TVL. The founders are debating whether to hire a community marketer or just focus on dev and audits until...

2

Replies
Abasi T

@ggvVaSO • 1w

Worked on one blockchain for years — now every job wants multi-chain skills. How are people handling this?

I’ve been working primarily on Solana for about 4 years. Until recently, that depth felt like a strength.Lately, almost every role I see expects experience across multiple chains — Ethereum,...

4

Replies