Remote Staff Software Engineer (Protocol)

Description:

• Design, build, and maintain XMTP, a secure E2EE messaging protocol.
• Extend the encrypted group chat protocol to support 1:1 conversations.
• Develop a protocol for sharing user state between devices securely.
• Create a protocol for verifying message senders with third-party servers in a trust-minimized manner.
• Collaborate with engineers and stakeholders to ensure confident and efficient project delivery.
• Engage in open-source communities and represent the company effectively.
• Evaluate and suggest trade-offs in development plans considering security, scalability, and efficiency.

Requirements:

• Minimum 10+ years of experience as a staff software engineer.
• Proficiency in Rust and at least one of Kotlin, Swift, or C++.
• Extensive background in designing communication protocols with a focus on performance and security.
• Knowledge of encryption algorithms, key exchange protocols, and secure messaging protocols.
• Familiarity with Messaging Layer Security is a plus.
• Experience in adversarial systems design and security risk mitigation.
• Previous involvement in open-source SDK projects and public communications.

Benefits:

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