Backend Engineer

About Harpie

At Harpie, our mission is to eliminate theft committed on blockchains. We’re a small and highly-technical team that’s actively exploiting the intricacies of blockchain consensus to fulfill our mission. By joining the Harpie team, you’ll be a driving force in improving blockchain security at scale and pioneering new use cases of cutting-edge tech.

Harpie was founded in 2021 and is currently building the first firewall that stops theft and scams on-chain. By exploiting gas auctions, we are able to detect and eliminate malicious transactions before they have an opportunity to execute.

We are remote-first and consider applications from all around the world.

About the role

We are looking for a backend engineer with knowledge and experience working with blockchain data. The main focus of this role is data processing & optimization; writing API endpoints is a secondary focus. Our backend codebase is written in TypeScript Node.

Responsibilities

• Build software that can process real-time blockchain data and output responses into a database/blockchain.


• Optimize throughput of data processing & data delivery to a competitive degree by improving data structures, location of servers, redundancy, and algorithmic efficiency.


• Identify and eliminate edge cases where the software may fail its intended use-case.


• Create API endpoints to serve processed data.


• Work in a small team and take ownership of a project while retaining clear communication,

Required

• Experience in TypeScript and Node.js.


• At least two years of experience in a Data Engineer, Backend Engineer or a similar role.


• A basic understanding of how blockchain data (specifically Ethereum) is created and reported.


• Strong knowledge of the nuances of time and space complexity as it pertains to data processing.


• Strong knowledge and experience in improving throughput of a data processing system (data structures, load balancing, caching, etc.)


• Experience working with PostgreSQL databases.


• Problem solving skills and ability to learn on the job.


• Experience working in smaller-sized teams & ability to take ownership of a project.

Preferred

• At least two years of experience working for quantitative finance, fintech, or crypto companies.


• Understanding of the EVM mempool.


• Experience creating Ethereum nodes (preferably Geth).


• Experience in golang and solidity.


• Experience in writing graphQL resolvers.

Benefits

• Competitive salary and equity


• Medical, dental, and vision insurance


• Monthly self-care stipend for physical and mental health spending


• Office equipment bonus upon hiring


• Flexible hours, liberal work-from-home policy, and a supportive remote team

Next steps

Please submit your resume to careers@harpie.io with the subject line “(YOUR NAME) Backend Engineer Application.”