Senior dApps Engineer
$155k - 170k per year
Cryptography & Decentralised Tech
Permanent
Europe
Remote

I'm currently working with an early-stage blockchain infrastructure company building a genuinely novel approach to on-chain data, queryable storage built directly into the protocol layer, removing the need for external indexers entirely. They're looking for a Senior dApp Engineer to own the web surfaces that developers and users will interact with at mainnet launch and beyond.

 

This is a hands-on technical role reporting into the Head of Platform, owning the flagship Bridge UI and smart-contract integration across user-facing surfaces. The team is small and highly capable, and this hire will set the quality bar for Web3 UX across the product.

 

You'll remain deeply technical while taking ownership of client-side observability, code standards, and cross-team collaboration with Protocol and DevRel.

 

Responsibilities

  • Own the Bridge UI end-to-end - L2 to L3 token transfers, wallet connect, network switching, signing, status tracking, and edge-case handling including stuck transactions and RPC failures.
  • Lead smart-contract integration across user-facing surfaces, debugging failed transactions and decoding calldata using Tenderly or similar.
  • Write minor Solidity contracts in Foundry (faucets, helpers) and pair with the Senior Solidity Engineer on bridge and account abstraction flows.
  • Build and own client-side observability - wallet error tracking, RPC failure monitoring, and transaction success dashboards.
  • Set and enforce the quality bar for Web3 UX through code review and engineering standards.
  • Collaborate with Protocol on contract integration, SRE on infrastructure signals, and DevRel on developer onboarding.
  • Provide backup coverage across developer onboarding, the homepage, and L3 explorer operations.

 

Requirements

  • 3+ years production TypeScript or JavaScript, with real shipped applications.
  • Hands-on experience with a major frontend framework (React, Vue, Svelte or similar) and Node.js.
  • Strong Web3 frontend experience with wagmi, viem, ethers.js or equivalents, including multi-wallet integration and knowledge of wallet-specific quirks.
  • Solidity reading proficiency: able to integrate ABIs, debug failed transactions, decode calldata, and understand gas, nonces, and replacement transactions.
  • Comfortable writing minor contracts in Foundry and familiar with EIP-1559, EIP-712, ERC-20/721/4626, and ERC-4337 basics.
  • Prior experience setting quality standards and reviewing Web3 UX in a production environment.

 

If you're a strong dApp engineer looking to own meaningful surface area at a pre-mainnet infrastructure company building something that doesn't yet exist elsewhere, apply or get in touch directly.

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