Staff Software Engineer - Smart Contracts Team

About Hashgraph:

Hashgraph is a fast-growing software company committed to supporting, developing and servicing Hedera, an open source, proof-of-stake platform. Hedera is EVM-compatible and has been specifically built to meet the needs of enterprise and Web3 applications, which require speed, security, stability and sustainability. Hedera’s public network is governed by industry-leading organizations, spanning 11 sectors and 14 regions who oversee the development and direction of the decentralized platform.

About the role:
The EVM Developer Experience team is looking for a seasoned web3 engineer who can contribute to the development of the Hedera services and web3 and Ethereum community tools that enable the processing of smart contract transactions across the network.

You may find yourself doing all of the following:

• Staying connected with the EVM ecosystem, bringing vital learnings, discussions, and applicable explorations on Hedera back to the team to improve EVM DevEx

• Implementing and enhancing the JSON Rpc Relay (Js/Ts) to enable seamless EVM transactions submission to the network

• Maintaining and evolve community tools like blockexplorer, verification and data gathering services, that hashgraph deploys for community servicing

• Implementing examples, how-tos, and documentation that showcase web3 tool usage, and EIP and Hedera functionalities

• Designing, developing, and maintaining server-side logic for back-end solutions with public APIs involving TypeScript, SQL, data ingestion, REST, GraphQL, and Web Sockets

• Applying web3 knowledge of Solidity and life cycle of an EVM transaction

• Writing efficient, reusable, and reliable code to optimize for maximum speed, scalability, and system efficiency

• Exploring and unblocking web3 tool and dApp integration capabilities on Hedera, ensuring developers can continue to use their familiar tools when migrating to Hedera from other EVM chains

• Spending 80% of your time designing, coding, and testing

Qualification Requirements:

• Master’s degree in Computer Science or a similar field or equivalent work experience

• 7+ years of software development experience

• 4+ years of blockchain development experience

• Proficiency in JS/TS programming language and its ecosystem of libraries

• Node.js backend development experience

• Familiarity with high-performance architectural systems and design patterns

• Knowledge of the blockchain technology ecosystem, particularly EVM

• Experience with smart-contract development with Solidity/Vyper, HardHat, Foundry, Web3.js / Ethers.js frameworks, JavaScript/TypeScript

• Experience writing secure, efficient, and gas-optimized smart contracts for decentralized applications (dApps) on EVM-compatible networks

• Experience with wallet integrations (MetaMask, WalletConnect, etc.), and tools and libraries for connecting web3 applications with users' wallets

• Understanding of Ethereum ecosystem ERC20s, ERC721s, ERC1155s, on-chain and off-chain

• Ethereum Json RPC specification knowledge

• Experience with distributed open-source application development

• Excellent debugging, critical thinking, and interpersonal skills

• Familiarity with test-driven software development processes and continuous integration tools and systems

Other skills that are great to bring with you but that we can help you develop:

• Knowledge of the Hedera network

• Experience with web3 tools that support indexing, verification, and transaction management, such as TheGraph, Sourcify, or Blockscout

• Strong understanding of RESTful API design and development

• Strong grasp of Computer Science fundamentals including concurrency, performance optimization, and reusability

• Strong engineering principles and processes aimed at developing simple, modular, testable, and high-quality code

• Familiarity with security principles, cryptographic tools, and libraries

• Kubernetes, Helm, Grafana, and GCP experience