Systems Engineer
Harmony is an open blockchain platform designed to run Ethereum applications with fast transaction finality and low fees. It provides infrastructure, developer resources, governance, validators, and a cross-chain bridge for blockchain users and developers.
Maintainer signals as of 8/23/2026
Funding history
Projects
About Harmony
Harmony operates an open blockchain platform supporting Ethereum applications, assets, collectibles, identity, and governance. Its ecosystem includes documentation and developer tools, SDKs, APIs, deployment resources, validator and delegator functions, governance, and community forums. Harmony also operates a LayerZero-powered bridge interface that enables users to transfer crypto assets between Ethereum and Harmony.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design and implement core blockchain systems focused on security, scalability, and decentralization. You will operate and maintain a large node network, optimize throughput and performance, profile and debug low-level code, prototype research ideas, and coordinate engineering work and incident responses, including off-hour emergencies.
Requirements
- Bachelor degree in computer science with specialization in kernel data structures or compilers
- 3 to 5 years of professional experience including at least 1 year of startup experience
- Ability to work full-time onsite five days per week in Palo Alto California and handle off-hour emergencies
- Exceptional communication and people skills
Responsibilities
- Develop blockchain systems with high security scalability and decentralization
- Operate and maintain a large network of nodes and manage on-chain assets
- Optimize system throughput to support very high request rates with cost constraints
- Prototype and implement research-driven features and performance improvements
- Debug and profile low-level code including hexadecimal-level analysis
- Coordinate asynchronously with engineers and write technical updates
- Respond to off-hour emergencies and on-call incidents
- Communicate effectively with stakeholders