Description:

Join Ephemera as a Staff Software Engineer focused on building and maintaining XMTP, an end-to-end encrypted messaging protocol.
You will design, build, and maintain XMTP, with projects including extending the encrypted group chat protocol for 1:1 conversations, sharing user state between devices in a privacy-preserving way, and designing a protocol for message verification with third-party servers.
Collaborate closely with engineers, developers, and stakeholders to build with confidence and deliver efficiently.
Engage in open-source communities and events, effectively representing Ephemera in public forums.
Evaluate and recommend trade-offs in development plans and system design, considering security, scalability, efficiency, and cost.

Requirements:

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

You will receive a competitive compensation package that includes base salary and equity.
The salary range is between $200k-$250k, depending on experience and location.
Enjoy a remote-first work environment with semi-yearly gatherings to connect in real life.
Fully paid Medical, Dental, and Vision insurance is provided in the US.
Parental Leave is included.
IT equipment and work-from-home setup will be provided.
A monthly Wellness and Lifestyle stipend is available.
A personal assistant will be provided to support your work.
Unlimited time off is offered to promote work-life balance.