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.

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

Ellipsis Labs Company Profile

Ellipsis Labs is a venture-backed technology startup based in New York City. Founded in 2022, the company develops decentralized finance (DeFi) protocols and high-throughput infrastructure. The firm focuses on building efficient and transparent financial applications on the Solana blockchain.

The company operates in the cryptocurrency and blockchain sector. Its core products include Phoenix, a decentralized limit order book and perpetuals exchange, and SolFi, an automated market maker. These products have facilitated over $285 billion in trading volume. Ellipsis Labs has raised over $43 million in venture funding from investors such as Paradigm, Haun Ventures, and Electric Capital. The company maintains an entirely in-person workforce of approximately 25 employees at its Chelsea headquarters.

Entry-Level Career Opportunities

Ellipsis Labs regularly recruits for entry-level engineering positions and structured internship programs. The company seeks candidates for early-career software engineering roles and focuses on technical problem-solving skills rather than traditional credentials.

The company provides several benefits for entry-level employees, including:

• Competitive starting salaries and equity grants for new graduates.
• Comprehensive health benefits with 90% of premiums covered.
• Unlimited paid time off and daily provided meals at the office.

Junior engineers at Ellipsis Labs work autonomously on complex technical challenges. They gain direct experience in smart contract development, backend engineering, and high-performance financial systems while working in a fast-paced, in-person environment.

Company Link: https://www.ellipsislabs.xyz/