Staff Software Engineer - Messaging Protocol

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March 22

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The Up Next Company

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Crypto • Cybersecurity • B2C

The Up Next Company is focused on developing Ephemera, a decentralized and private messaging technology that enables secure communication and enhances the XMTP ecosystem. Their key product, Converse, is an encrypted messenger that facilitates crypto-native interactions, emphasizing data ownership and interoperability. The company's mission is to create foundational technology for a secure layer of the internet, grounded in open-source principles that foster a trusted developer community.

2 - 10 employees

Founded 2023

₿ Crypto

🔒 Cybersecurity

👥 B2C

📋 Description

• Join Ephemera, build the future of onchain messaging. • Design, build, and maintain XMTP, our E2EE messaging protocol. • Collaborate closely with other engineers, developers, and stakeholders. • Engage in open-source communities and events. • Evaluate and recommend trade-offs in development plans and system design.

🎯 Requirements

• Minimum of 10+ years of professional experience as a software engineer, staff level. • Expertise in Rust and at least one of the following: Kotlin, Swift, C++. • Extensive experience designing, developing, and maintaining communication protocols with an emphasis on performance, scalability, and security. • Understanding of encryption algorithms (e.g., AES, RSA), key exchange protocols (e.g., Diffie-Hellman), and secure messaging protocols (e.g., Signal Protocol, PGP). • Bonus points if you have prior experience with Messaging Layer Security. • A proven aptitude for adversarial systems design, including identifying and mitigating potential security risks. • Prior involvement in open-source SDK projects and public communications.

🏖️ Benefits

• Competitive compensation package, Base + Equity. • Salary range between $200k-$250k base range (depending on experience + location). • Remote-first environment with semi-yearly gatherings to connect IRL. • Fully paid Medical, Dental, Vision insurance in the US. • Parental Leave. • IT Equipment and WFH setup. • Monthly Wellness and Lifestyle stipend. • Personal assistant. • Unlimited time off