Senior Rust Engineer (Web3)

Senior Rust Engineer

Full-time/Company: Synonym

Founded in 2020, Synonym is building the world’s first digital free-market society and the R&D required to deliver “The Atomic Economy.” Their products include Pubky (self-sovereign identity & open social graph), Pubky Ring (keychain & auth), Bitkit (Bitcoin & Lightning wallet), and Blocktank (Lightning Service Provider). The team’s mission is to create interoperable, open-source alternatives that empower individual digital autonomy.

Applicants from the USA (citizens and residents) are not eligible.

Responsibilities:

- Architect, develop, and maintain robust Rust-based solutions for core products and protocols.
- Collaborate with cross-functional teams (product, UX, QA) to integrate features and improvements.
- Perform code reviews and maintain high standards of code quality and documentation.
- Optimize applications for speed, reliability, and scalability.
- Research and propose improvements based on emerging libraries and industry trends.
- Ensure security and reliability to protect user data and system integrity.

Requirements:

- Proven experience building production-grade applications or systems in Rust.
- Experience with low-level systems programming, concurrency, and performance optimization.
- Familiarity with database management and RESTful APIs.
- Strong problem-solving skills and ability to deliver scalable solutions.
- Excellent communication and ability to work effectively in a fully remote team.
- Proficient with Git or similar version control tools.

Nice to have:

- Practical knowledge of cryptography and secure data handling.
- Experience building secure server protections and access controls.
- Exposure to decentralized / peer-to-peer architectures and protocols.
- Experience with Bitcoin or other blockchain technologies.
- Prior work on decentralized or federated social platforms (Nostr, Mastodon, Bluesky).

Stack:

Rust, Bitcoin, Lightning, P2P protocols, REST APIs, Databases, Git

Benefits:

- Impactful work shaping next-generation technologies.
- Growth, ownership, and flexibility to lead initiatives.
- Cutting-edge environment focused on Bitcoin and peer-to-peer ecosystems.
- Flexible hours and a remote-first culture.
- 28 vacation days per year.

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