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Software Engineer - 2027 Interns

Ellipsislabs

New York, New York, USonsiteFintech

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About this role

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.

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

Salary insight

This posting doesn't disclose pay. Across 10,065 New York jobs with disclosed salaries on ForgeApply, the median is $160k.

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Based on live postings with disclosed pay on ForgeApply; refreshed daily. Not an estimate of this employer's offer.

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