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. Our foundational product, Phoenix Legacy, is a limit order book on the Solana blockchain that established our expertise in operating high-performance markets. Combined, these products have facilitated over $285B in trading volume across Solana markets.
The Opportunity & Scope
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 & Requirements
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
- 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
About Ellipsis Labs
Ellipsis Labs, founded in 2023 by Eugene Chen and Jarry Xiao, ex-Citadel and Berkeley engineers, in New York, builds high-performance DeFi on Solana. Its flagship product Phoenix is an open, non-custodial limit orderbook DEX with on-chain settlement and instant finality, designed for professional market makers and retail traders seeking transparent liquidity. Complemented by Atlas, its validator infrastructure, Ellipsis focuses on low-latency, capital-efficient trading without intermediaries. Backed by leading investors including Paradigm and Electric Capital, the team applies traditional finance market structure expertise to on-chain venues. Headquartered in New York with a lean engineering team, Ellipsis emphasizes correctness and speed. Expect a rigorous, performance-obsessed culture that values market microstructure knowledge, security and shipping reliable trading systems in volatile markets every day.