What are the responsibilities and job description for the Quantitative Developer Intern - Summer 2026 position at Everhaven Securities?
Everhaven Securities runs one of the largest prediction markets crypto market-making operations across Kalshi, Polymarket, and other venues. We are hiring a Quantitative Developer Intern to work on a C /Python trading platform for event-contract markets such as Kalshi and Polymarket. You will work with a small team to maintain and improve the market-making engine, implement new strategies, integrate research models, and optimize latency-sensitive trading infrastructure. Candidates will be required to work onsite in New York City.
This role is ideal for someone who enjoys both quantitative strategy work and production engineering. What you will do:
C 20, Python, CMake, Boost/Beast/Asio, FIX, WebSockets, REST, ONNX Runtime, GTest, Google Benchmark, ZMQ, shared-memory IPC, Rust FFI, Linux.
The annual base salary is $114,400-$156,000 (USD) which will be prorated based on internship start and end date and does not include discretionary bonuses. Actual compensation offered to the successful candidate may vary from posted hiring range based upon geographic location, work experience, education, and/or skill level, among other things.
This role is ideal for someone who enjoys both quantitative strategy work and production engineering. What you will do:
- Implement and maintain market-making strategies for binary/event contracts.
- Work on the C 20 OMS, order gateway, and WebSocket/FIX trading infrastructure.
- Integrate new pricing and theo models
- Improve latency, throughput, and reliability across order placement, order state tracking, reconciliation, and IPC/data feeds.
- Support venue integrations for Kalshi, Polymarket, and future exchanges.
- Build and maintain Python tooling for supervisors, dashboards, monitoring, rotations, and analysis.
- Add tests, benchmarks, and diagnostics for trading logic and infrastructure changes.
- Collaborate with senior engineers and researchers to bring new strategies from idea to production.
- Strong C experience, ideally C 17/20.
- Python proficiency for research, automation, and operational tooling.
- Experience with trading systems, market making, exchange connectivity, or low-latency infrastructure.
- Understanding of order books, limit orders, fills, position/risk management, and exchange APIs.
- Comfort with concurrency, networking, WebSockets, REST, and preferably FIX.
- Ability to debug production systems and reason carefully about correctness, latency, and risk.
C 20, Python, CMake, Boost/Beast/Asio, FIX, WebSockets, REST, ONNX Runtime, GTest, Google Benchmark, ZMQ, shared-memory IPC, Rust FFI, Linux.
The annual base salary is $114,400-$156,000 (USD) which will be prorated based on internship start and end date and does not include discretionary bonuses. Actual compensation offered to the successful candidate may vary from posted hiring range based upon geographic location, work experience, education, and/or skill level, among other things.
Salary : $114,400 - $156,000