Principal EVM 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 Smart Contracts team is looking for a seasoned Java engineer, with deep blockchain protocol engineering experience who can contribute to the evolution, performance and optimization of the Hedera EVM.

You may find yourself doing all of the following:

• Being part of an engineering team that delivers values frequently, working from design to implementation in a daily collaborative process.

• Working on plain Java codebase (with no libraries or frameworks) with high performance, low latency and high throughput requirements

• Designing, implementing, and innovating transaction processing, execution algorithms, processes, and opcodes.

• Implementing and enhancing the Java smart contract services on the Hedera network that expose EVM features

• Upgrading the Hedera EVM with the Ethereum roadmap upgrades and the Hedera native innovations.

• Contributing to open source code clients that focus on VM state transitions based on contract bytecode with the goal of new feature support and performance improvements

• Developing various aspects of the Hedera Hashgraph Distributed Ledger Ecosystem

• Implementing Hedera improvement proposals requested by the community

• Testing the Hedera EVM with Ethereum community tools and Consensus node testing tools.

• 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

• 10+ years of software development experience

• 4+ years of blockchain development experience

• Experience with distributed open-source application development

• Expertise in the Java programming language, VM, and its ecosystem of libraries and tools

• Experience in plain vanilla Java development with high performance requirements

• Deep knowledge of and experience with EVM-based blockchains

• Experience writing and debugging smart contracts for an EVM-based ledger

• Experience in a tech or team lead role with the ability to guide engineers up to the Staff level

• 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 high-performance architectural systems and design patterns

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

• Familiarity with security principles, cryptographic tools, and libraries

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

• Experience with Hyperledger Besu

• Familiarity in developing libraries and platforms for use and deployment by application developers

• Open source development experience

• Expertise with Dagger or any compile time dependency injection framework

• Protobuff development experience

• Proficiency with web3 tools written in JavaScript or TypeScript

• Experience with performance, static code, and data-flow analysis

• Expertise with compilers, parsers, interpreters, and garbage collectors

• Hotspot JVM or GraalVM experience