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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 and maintain scalable production services with mentorship from senior engineers. Today we handle thousands of QPS; future systems need to scale by an order of magnitude.
Implement and extend performance tooling and observability, profiling at the micro- and nanosecond level where it matters.
Contribute to ambitious initiatives (e.g., real-time data indexing at scale) from specification and design through implementation, testing, monitoring, and maintenance, owning scoped projects end-to-end.
Qualifications
Required
Hands-on experience building software (courses, personal projects, research, or internships) in Rust, C++, C, or another low-level language; you write clear, tested code
Solid Unix/Linux fundamentals (shell, processes, files, basic networking)
Strong CS foundations (data structures, concurrency, systems thinking)
Ability to make informed trade-offs with business context; high agency and a team-first mindset
Curiosity about DeFi (prior domain experience not required)
Preferred
Experience or coursework in distributed systems, networking, OS, compilers, or low-latency systems.
Familiarity with blockchain technology (Solana a plus).
Interest or experience in quant trading/fintech.
Rust proficiency.
This posting covers both Intern (10–12 weeks) and New Grad (full-time)
tracks. Indicate your preference when you apply.