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About Hedera Hashgraph :   We are a fast-growing company built around a revolutionary technology — the Hashgraph consensus algorithm. Hedera Hashgraph is well-suited to become the world’s first mass-adopted distributed public ledger because it is blazing fast, highly secure and ensures fairness.  We are on a mission to create a trusted and empowered digital future for everyone; a cyberspace where you work, play, buy, sell, create, and engage socially; where you have safety and privacy in your digital communities; where you feel confident when interacting with others; where you own and control your information.     Hedera is ambitious and fast-paced.  We balance our enthusiasm with a measured approach to risk and are well capitalized having raised over $100-million. Today, our team consists of more than 60 talented individuals, including many of the best minds in the industry. We are proud of our high-quality culture, dedicated to our values of integrity, ethics, service, excellence, and teamwork.   We are looking to hire effective, collegial and hard-working people to help achieve our vision. Join us and say, “Hello future.”       About The Role:   Develop various aspects of the Hedera Hashgraph Platform   Implement and  enhance the crypto, smart contract, and file  s ervices   Develop sample applications to demonstrate the value and strength of the platform. Sample applications will include web, mobile, and embedded development   Be a strong and proficient hands-on programmer   S pend  80% of your time  designing,  coding,  and testing   Skills Needed:   3 Plus years of software development experience    Strong grasp of Computer Science fundamentals including concurrency, performance optimization, and reusability   Familiarity with, and interest in mathematical concepts, principles, and techniques   Systems programming experience including providing services to other software (e.g.   operating systems, computational science applications, industrial automation, and  SaaS  applications)   Proficiency in Java  programming  language and its  ecosystem of libraries and tools   Deep knowledge of and experience with the Java VM, covering its strengths and weaknesses   Comfortable with databases and  SQL ,  experience  with  g eo-distributed database architecture  a plus.   Familiarity with security principles, cryptographic tools, and libraries     Familiarity with high-performance architectural systems and design patterns   Experience in developing libraries and platforms for use and deployment by application developers   Strong engineering principles and processes aimed at developing simple, modular and high-quality code   Familiarity with test-driven software development processes and continuous integration tools and systems   Experience with blockchain (e.g., Bitcoin or Ethereum) and distributed applications is a big plus   Bachelor’s degree in Computer Science or a similar field, or equivalent work experience