Ellipsis Labs is a profitable, venture-backed New York startup building performant DeFi protocols on high-throughput decentralized infrastructure. Our long-term mission is to build a more efficient, transparent, and fair financial system.
Our flagship product, Phoenix Perpetuals, brings professional-grade perpetual futures to Solana. Phoenix has processed over $4 billion in trading volume and is growing 20% month over month, adding to the more than $300 billion our products have facilitated to date. Behind Phoenix is a lean, high-caliber team with experience at top trading firms, blockchain companies, and tech companies.
Ellipsis Labs is seeking software engineering summer interns to join our team in 2027. As an early-stage startup, we appreciate bright generalists who can iterate and ship quickly. In this role, you will:
Build real product features and/or platform components across the stack, front end, back end, infra, or on-chain, based on your skills and interest
Own scoped projects end-to-end: problem definition → design → implementation → testing → deployment → monitoring
Collaborate with design and engineering to deliver fast, reliable, and secure experiences
Instrument and improve performance, reliability, and observability; write clear tests and documentation
Required
Hands-on experience building software (courses, personal projects, research, or internships) in one or more languages such as TypeScript/JavaScript, Python, Rust, Java, C/C++; you write clear, tested code
Solid CS fundamentals (data structures, algorithms, systems thinking) and familiarity with Git and basic debugging
Ability to make informed trade-offs with business context; high agency and a team-first mindset
Curiosity about DeFi/crypto (prior domain experience not required)
Preferred
Experience in one or more areas: full-stack web (React/Javascript), backend APIs/services, infrastructure/DevOps (Docker, CI/CD, cloud), or on-chain/low-level systems
Familiarity with blockchain technology (Solana a plus)
Interest or experience in fintech/trading
Rust or TypeScript proficiency
Skills Required
- Hands-on experience building software in one or more languages
- Solid CS fundamentals and familiarity with Git
- Curiosity about DeFi/crypto
What We Do
Ellipsis Labs is a venture-backed New York based startup building differentiated products in decentralized finance. Phoenix, our flagship protocol, is the leading orderbook spot exchange on the Solana blockchain. Our commitment to creating sustainable solutions reflects our company's long-term approach and values. We take pride in our strong, in-person culture defined by our hard-working, mission-driven team.
