Software Engineer - 2027 Interns

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. **All roles are in the Ellipsis Labs office in New York City.** 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 **Qualifications** **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