Software Engineer - Intern and New Grad

Ellipsis Labs is a profitable, venture-backed New York-based startup building differentiated products and infrastructure in decentralized finance.

The company is the developer of Phoenix, the leading order book spot exchange on the Solana blockchain, and a top 10 DEX (decentralized exchange) with >$70B in volume since inception in 2023. Additionally, we are one of the most active and prominent on-chain market makers in crypto.

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

Ellipsis Labs is seeking a Software Engineer — Campus (Intern & New Grad) to join our team. 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

This posting covers both Intern (10–12 weeks) and New Grad (full-time) tracks. Indicate your preference when you apply.