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Kaustubh

@kaustubh • 3mos

List: Best Python Courses on YouTube for Career in Crypto

Hi AOB team and fellow crypto enthusiasts, I thought of creating a list of all the best and free Python courses on YouTube for career in crypto. Everyone says one...

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Difficulty - Medium

Total Plays - 16

Allowed Time - 10 sec

Best time - 2.464 sec

Why might a contract work on testnet but fail on mainnet?

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

#A

#B

#C

#D

Explanation:
Mainnets often have stricter gas limits and higher costs than testnets. A function that runs fine on testnet may exceed block gas limits in production. Developers should simulate deployments and optimize loops before mainnet release

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Application deadline: 2 weeks

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Blockchain Developer

Securitize • FULL_TIME • NA

Job description

This role sits within Securitize’s engineering team and focuses on building and maintaining blockchain-based systems that support tokenized real-world assets. The position involves developing backend services using Node.js, NestJS, and TypeScript, alongside designing and deploying Solidity smart contracts on Ethereum and other EVM-compatible networks. The developer contributes to CI/CD pipelines,...

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abushaker jamil

@hRZ80yi • 1mo

Looking for Guidance in My Blockchain Journey --- How Do I Get My First Full-Time Blockchain Developer Role?

I’ve been learning blockchain for about 1.5 years, and it has become something I’m truly passionate about. Even though I don’t come from a traditional tech background. I completed a...

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AlexDeveloper

@Alexdeveloper • 2mos

“As a Product Ops Lead at a DeFi project, how do you communicate smart-contract incidents when founders want ‘no public confession’ but engineers need transparent updates?

We had a liquidity pool contract malfunction last week during a routine maintenance deploy. The frontend showed zero balance for 20 minutes, causing panic in our Discord. The dev lead...

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Abasi T

@ggvVaSO • 3mos

How Do Blockchain QA Engineers Keep Automation Stable Across Networks When Forks Drift and RPCs Time Out?

Automation in blockchain QA looks straightforward until you scale it across networks. Hardhat, Foundry, Slither, MythX — each works fine alone, but once you start chaining them, things get messy....

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Application deadline: 1 week

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Fullstack Engineer

Paradex • FULL_TIME • NA

Job description

Paradex is a decentralized finance platform building a unified system that combines exchange trading, asset management, and borrow/lend functionality on a high-performance blockchain. The team operates with a flat structure and focuses on shipping production-grade systems without traditional management layers. As a Fullstack Engineer, you will own the end-to-end development...

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Shehnaz Hussain

@shehnaz • 3mos

As a Solidity dev, how do you handle imposter syndrome when everyone seems more advanced?

I’ve been working as a Solidity developer for about a year, but some days I genuinely feel like an imposter. Everyone around me seems ahead — zero-knowledge proofs, deep gas...

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Shubhada Pande

@ShubhadaJP • 1mo

Solidity Debugging & Tooling Hub (Tracing, Reverts, Incidents, Postmortem Proof)

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Application deadline: 2 days

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Security Engineer

Provable • FULL_TIME • NA

Job description

Provable is seeking a Security Engineer to oversee and secure its technology infrastructure, with a strong focus on cryptocurrency private key management, cloud security, and systems reliability. The role is part of the engineering function and supports a remote-first operating model.This position is responsible for protecting sensitive cryptographic assets, strengthening...

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Tushar Dubey

@DataChainTushar • 3mos

As a QA tester in smart-contract teams, which actions truly help reduce audit churn?

After going through multiple audits across DeFi and gaming projects, I’ve noticed things run far smoother when QA and auditors start overlapping earlier. We often catch logic gaps or inconsistent...

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Application deadline: 3 weeks

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Smart Contract Engineer

Polymarket • FULL_TIME • NA

Job description

Polymarket operates a large-scale prediction market protocol where users trade on real-world outcomes using on-chain infrastructure. The Smart Contract Engineer will join the core protocol team and own the design, development, and deployment of Solidity smart contracts that secure and operate high-volume peer-to-peer markets. This role focuses on building and...

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Andria Shines

@ChainSage • 3mos

How to measure DAO Growth When Contributor Incentives Go Flat

I manage growth at a mid-sized DAO (~7K members) where contributor activity has been declining since the token incentive program flattened post-airdrop. Our Dune dashboards show daily active wallets dropped...

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Application deadline: 1 month

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DEX – Product Manager

Ethena Labs • FULL_TIME • NA

Job description

Ethena Labs is hiring a DEX Product Manager to support the launch and ongoing operations of an exchange closely aligned with its digital dollar ecosystem. The role sits within the Operations team and reports directly to the COO. This position involves coordinating with users, partners, and internal stakeholders to ensure...

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Arif

@ofh3VYy • 2mos

🚀 I Want to Become a StarkNet/Cairo Auditor — Here’s My Starting Point & I’d Love a Roadmap

I’m transitioning my focus toward StarkNet and Cairo security auditing and would appreciate guidance from anyone experienced in the ecosystem.What I know so far:• Solidity development• Hardhat, Foundry, and advanced...

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