How to Land Account Abstraction Jobs: ERC-4337, Bundlers, Paymasters, and Security Skills

I’ve been noticing a lot of buzz around Account Abstraction jobs, especially with ERC-4337 becoming more mainstream. I’m exploring opportunities in this space and wanted to ask the community: what exact skills are recruiters and teams looking for when hiring for account abstraction roles?

From what I’ve read, understanding bundlers and paymasters is critical, since they form the backbone of how ERC-4337 works in practice. But I’m wondering, do employers expect developers to already have hands-on experience building custom paymasters, or is strong Solidity knowledge enough to start with?

Another area that keeps coming up is security edge cases. Account abstraction changes how wallets interact with the network, so I imagine security audits and gas optimization strategies are highly valued. Has anyone here been through an interview or landed a role in this niche?

It would be super helpful if you could share what skills actually get you hired—whether it’s mastering ERC-4337 internals, writing efficient bundler code, or demonstrating real-world projects on GitHub.

Looking forward to hearing your thoughts and experiences!

If you want to get into Account Abstraction roles, the best way is to actually build and break ERC-4337 in practice.

Start small: create a smart account that handles validateUserOp, manages nonces, supports EIP-712 signing, and maybe adds session keys or batched calls. Then try writing a simple custom paymaster. For example, one that only sponsors certain users or has time-based limits. Make sure you know how simulateValidation, postOp, and stake/deposit mechanics work.

It also helps to run your own bundler. Play around with batching, handling reorgs, and tracking metrics like inclusion latency and userOp success rate.

For security, don’t skip edge cases: replay attacks, postOp reentrancy, griefing through huge gas limits, or draining paymaster stakes.

Employers love seeing real repos, demos (like a social recovery wallet), and write-ups of bugs you’ve found that shows you actually get the trade-offs. Best wishes. Feel free to ask more questions. I am happy to help.