Ellipsis Labs is hiring a Senior Software Engineer in Engineering — New York, New York. The overview below is synthesized from the employer posting on jobs.ashbyhq.com: factual requirements and scope are preserved, but prose is rewritten with editorial context. Verify details and apply via the employer link.
Ellipsis Labs is a profitable, venture-backed New York-based startup building sustainable and efficient DeFi protocols on high-throughput decentralized infrastructure. Our long-term goal is to build a better financial system.
Our flagship product, Phoenix Perpetuals, brings professional-grade perpetual futures to Solana. Building on our experience developing efficient markets, Ellipsis Labs also operates SolFi, a proprietary automated market maker that provides efficient liquidity for key trading pairs.
The Opportunity
Ellipsis Labs is seeking a Senior Software Engineer to join our team. In this role, you will:
- Contribute to critical software systems at all parts of the stack
- Design, develop, and deploy programs on the Solana blockchain
- Maintain a high bar of security, correctness, and thoughtfulness around the code
- Write high-quality, maintainable, well-tested code with thorough documentation
Qualifications
Experience and skills the team lists as required:
Required
- Experience building software systems (preferably in Rust, C++, C, or Golang), with high-quality and well-documented production code
- A demonstrated track record of high agency, willingness to dive into unfamiliar technical and non-technical areas, and a team-first attitude
- Passion for decentralized finance
Preferred
Additional experience noted as a plus:
- Bachelor’s degree in Computer Science or related technical field or equivalent practical experience
- Experience working with blockchain technology, preferably Solana
- Experience working with Rust
Build a standout application
For the Senior Software Engineer at Ellipsis Labs, reviewers look for concise evidence over buzzwords. Mirror the language of the posting sparingly, quantify support or delivery outcomes, and show how you handled ambiguity, time-zone collaboration and user empathy. Keep your resume to impact, keep your cover note to one page, and link to artifacts — tickets resolved, docs shipped, dashboards owned — that prove you can operate in a fast-moving Web3 team. Prepare to discuss a time you turned a confusing user report into a clear fix and how you measure quality in support and operations.
Web3 hiring values reliability: on-time follow-through, clear writing, and a track record of improving runbooks and tooling. Treat the application as a work sample. For interviews, be ready to walk through how you prioritize across time zones, handle a difficult user, and decide when to escalate versus resolve directly. Show how you document decisions so the next teammate benefits.
In a distributed Web3 org, trust builds through written clarity. Use the cover note to demonstrate it.