Home | ArtOfBlockChain

Latest Trending Most replied

Difficulty - Medium

Total Plays - 1

Allowed Time - 10 sec

Best time - 4.975 sec

1. What does EXTCODEHASH primarily help detect?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
EXTCODEHASH returns the hash of a contract’s deployed bytecode, allowing detection of code changes or empty accounts. Auditors use it to verify contract identity and defend against unexpected contract replacement patterns

Leaderboard
Difficulty - Medium

Total Plays - 3

Allowed Time - 10 sec

Best time - 10 sec

What is the main security benefit of using immutable variables?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
immutable variables are stored directly in bytecode, not in storage, reducing runtime gas and preventing accidental overwrites. It is a common optimization technique in gas-efficient contract design.

Leaderboard
Application deadline: 3 weeks

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....

Details Login to apply
Application deadline: 3 weeks

L

Senior Software Engineer – E-commerce

Ledger • FULL_TIME • NA

Job description

Ledger is hiring a Senior Software Engineer to support the development and growth of its e-commerce platform, responsible for the user-facing experience of ledger.com. The role involves working across multiple repositories, implementing high-quality code, and contributing to architecture and planning of new features. The engineer will participate in an agile...

Details Login to apply
Application deadline: 3 weeks

T

Principal Security Engineer, Application Security

Trail of Bits • FULL_TIME • NA

Job description

Trail of Bits is hiring a Principal Security Engineer to provide technical leadership across advanced software assurance engagements. This position is responsible for directing application security assessments, performing deep technical code review, defining methodologies, and serving as a senior technical reference for the engineering team. The role includes designing and...

Details Login to apply
Application deadline: 3 weeks

T

Security Engineer, Blockchain

Trail of Bits • FULL_TIME • NA

Job description

Trail of Bits is seeking a Security Engineer focused on blockchain to support client engineering teams in strengthening the security of smart contracts and blockchain infrastructure. The role centers on analyzing blockchain codebases, identifying vulnerabilities, and producing structured feedback to enhance security posture. The position also involves using internal blockchain...

Details Login to apply
Application deadline: 3 weeks

E

Staff Solana Engineer

Exodus • FULL_TIME • NA

Job description

Exodus is seeking a Staff Solana Engineer to lead and maintain all Solana-related components across its wallet ecosystem. The role focuses on enhancing Solana wallet functionality, refining smart contract support, and delivering stable and optimized integrations for end users. This position requires deep fluency in Solana architecture, with ownership over...

Details Login to apply
Shubhada Pande

@ShubhadaJP • 3d

Smart Contract Fundamentals Hub

Your complete hub for everything related to EVM basics, tools, Solidity fundamentals, fallback behavior, delegatecall, blockchain concepts, Hardhat essentials, and beginner-friendly explanations for developers building strong foundational depth in Web3.This...

0

Replies
Victor P

@TrG6JIR • 4d

Solidity Gas Optimization in Interviews: Why Juniors Fail the Question and What Seniors Actually Look For

I realized recently that I’ve been approaching “gas optimization” totally wrong in interviews. Every time the question comes up, I start dumping the usual lines — avoid storage writes, use...

2

Replies
Sayali Bhandari

@SayaliB • 4d

Smart Contract Salary Negotiation in Remote Teams — How Do You Stay Fair Without Losing Leverage?

Salary negotiations in smart contract roles feel different from Web2. In remote-first teams, people earn from 6–40 LPA (and globally, $60K–$220K), and yet nobody really knows what “fair” looks like....

1

Replies
Shubhada Pande

@ShubhadaJP • 4d

Smart Contract Interview Prep Hub

complete hub for technical + behavioral interview questions, signals founders look for, gas optimization discussions, debugging logic, security fundamentals, and “how to think on your feet” in smart contract interviews.All...

0

Replies
ChainSavant

@ChainSavant • 4d

When a Junior Triggers a Production Incident: What’s the Right Way to Respond Without Making Things Worse?

The first time I broke production, I honestly thought I was done for. The bug itself wasn’t huge, but the panic that followed definitely was. I pushed a quick fix...

1

Replies
Application deadline: 3 weeks

E

Senior Software Engineer

Exodus • FULL_TIME • NA

Job description

Exodus is hiring Senior Software Engineers to support multiple engineering initiatives across its wallet and exchange products. The role involves contributing to front-end and back-end development, improving performance across applications, enhancing the wallet SDK, and helping refine developer tooling. You will collaborate closely with engineers and product managers to deliver...

Details Login to apply
Application deadline: 3 weeks

F

Protocol Specialist

Figment • FULL_TIME • NA

Job description

Figment is seeking a Protocol Specialist to support its staking division by monitoring supported networks, producing research, and ensuring internal teams have accurate protocol information. This role involves developing foundational knowledge across all protocols while gaining deeper expertise in selected networks. You will track governance updates, upgrades, and ecosystem developments...

Details Login to apply
Application deadline: 3 weeks

F

Senior DevOps Engineer

Figment • FULL_TIME • NA

Job description

Figment is hiring a Senior DevOps Engineer to support the infrastructure behind its staking and blockchain services. The role involves building, deploying, securing, and operating the systems that power institutional staking across multiple networks. You will work with protocol teams, DevOps groups, and security personnel to maintain reliable blockchain nodes,...

Details Login to apply